SDK Quality Scores

Auto-generated types for every API resource. Perfect IntelliSense.

Structured errors with code, message, type, and doc_url.

140kB min. Server-only so less critical.

Modular but most apps use the full client.

Gold standard. Every method documented with examples.

Full ESM support since v13.

Auto-generated types from database schema via CLI.

PostgreSQL errors passed through. Sometimes cryptic.

58kB min, 18kB gzip. Excellent for a full BaaS SDK.

Modular: import only auth, storage, or realtime.

Comprehensive with interactive examples.

Native ESM.

Full types. useUser(), useAuth() perfectly typed.

Clear messages with action items and links to docs.

~45kB gzip. Includes prebuilt UI components.

UI components add weight. Headless mode available.

Step-by-step guides for every framework.

Full ESM.

Tiny SDK, fully typed. CreateEmailOptions is perfect.

Structured JSON errors with human-readable messages.

<5kB. One of the smallest SaaS SDKs.

So small it doesn't matter.

Minimal, clear, with copy-paste examples.

Native ESM.

Schema-as-code. Types derived from table definitions. Zero codegen.

PostgreSQL errors passed through. Drizzle's own errors are clear.

~30kB min. No binary engine. Pure TypeScript.

Import only the dialect you need (pg, mysql, sqlite).

Excellent docs with interactive playground and migration guides.

Native ESM from day one.

Auto-generated types from OpenAPI spec. ChatCompletion types are excellent.

Structured errors with status, code, message. Retry-after headers.

~85kB min. Server-only so acceptable.

Modular but most apps import the full client.

API reference auto-generated. Cookbook examples excellent.

Full ESM support.

Fully typed. MessageCreateParams, ContentBlock types are precise.

Structured errors with type, message. Rate limit info in headers.

~40kB min. Lightweight for an AI SDK.

Single client class, not modular.

Clear API reference. SDK examples in docs.

Native ESM.

Generics for query data. useQuery<TData, TError> is perfectly typed.

Clear dev-mode warnings. Runtime errors descriptive.

~13kB gzip. Excellent for the feature set.

Modular: devtools, persist, and core are separate.

Tkdodo's docs are best-in-class. Guides + API reference.

Native ESM.

TypeScript-first. z.infer<> derives types from schemas perfectly.

Structured ZodError with path, message per field. Custom error maps.

~14kB gzip. Acceptable but Valibot is 10x smaller.

Monolithic — importing z imports everything. No modular imports.

Comprehensive README. Every method documented.

Dual CJS/ESM.

Fully typed command responses. Pipeline and transaction types are precise.

Clear error messages for auth failures and command errors. Could include retry guidance.

~15kB min. Built for edge/serverless — one of the most size-conscious SDKs.

Edge-first design. Imports only what you use.

Concise docs with framework-specific examples (Next.js, CF Workers, Vercel Edge).

Native ESM. Works in Edge Runtime.

Drop-in postgres.js/pg compatible types. Works seamlessly with Drizzle and Prisma type layers.

Postgres errors pass through with full detail. WebSocket connection errors could be clearer.

~25kB min. Designed for edge — uses WebSockets instead of TCP.

Minimal API surface. No unnecessary code to shake.

Edge/serverless quickstarts for every major framework. Connection pooling guide is thorough.

Native ESM. Works in CF Workers and Vercel Edge Functions.

End-to-end typed with hono/client (RPC mode). Route types inferred from handler definitions.

HTTPException with status and message. Zod validator integration gives good input error detail.

<15kB min for core router. Ultralight. Beats Express by orders of magnitude.

Every middleware is a separate import. Zero cost for unused features.

Comprehensive docs with runtime-specific guides (CF Workers, Bun, Deno, Node, Vercel).

ESM-native from day one. No CJS baggage.

Auto-generated from GraphQL schema. Every entity, field, and connection is fully typed.

GraphQL errors are structured with extensions. Rate limit info in response headers.

~80kB min. Includes full GraphQL client. Server-only so acceptable.

Single client class — importing the SDK loads all entity types and methods.

Generated reference from schema. Webhook payload types documented per event.

Native ESM.

The entire point of tRPC — end-to-end type safety without schemas or codegen. Inference is flawless.

TRPCError with code and message. Zod integration gives detailed input validation errors.

~10kB gzip for client. Server package is slightly larger but still lean.

Modular: @trpc/client, @trpc/server, @trpc/react-query are separate packages.

Comprehensive with adapter-specific guides. v11 migration docs are thorough.

Full ESM support in v11.

Event schemas typed via createFunction. Step function return types inferred from step chain.

Step errors show execution graph with pass/fail per step. Function registration errors are specific.

~25kB min. Lightweight for a workflow engine SDK.

Single package, but SDK surface is small enough that it doesn't matter.

Excellent guides on step functions, retries, and event-driven patterns. Interactive Dev Server.

Native ESM.

Task payloads and outputs fully typed. io integrations have typed schemas for each service.

Task failures include full stack traces in dashboard. SDK errors mention exact config issues.

~40kB min. Runs in a separate worker process so bundle size is less critical.

Integration packages are separate (@trigger.dev/github, etc.) but core is monolithic.

v3 docs with task examples, retry config, and deployment guides. Improving rapidly.

Native ESM in v3.

Schema-driven type generation. Queries, mutations, and actions are fully typed end-to-end.

Server function errors include function name, stack trace, and argument validation details.

~60kB min for the React client. Includes real-time sync engine.

React hooks, server functions, and auth are separate entry points.

Interactive dashboard as playground. Stack-specific tutorials. Schema and function docs are thorough.

Native ESM.

Full types for all video, data, and live-streaming resources. Auto-generated from OpenAPI spec.

Structured errors with request_id, type, and message. Mirrors Stripe's error format.

~70kB min. Server-only SDK so bundle size is not critical.

Resource-based client. Import what you need but client loads all resource definitions.

Every method documented with examples. mux-player docs are separate and excellent.

Full ESM support.

Full TypeScript. Generic search results with typed hits. Index settings fully typed.

MeiliSearchApiError with code, type, message, and link to docs.

~20kB min. Works in both browser and Node.

Single client class but lightweight enough that it doesn't matter.

SDK reference mirrors REST API docs. Every method has examples.

Native ESM with CJS fallback.

Fully typed. SSO Profile, Directory User, and Organization types are precise.

Structured errors with code, message, and request_id. Follows Stripe's pattern.

~30kB min. Lightweight enterprise auth SDK.

Module-based (SSO, Directory Sync, MFA) but accessed through single client.

Clear method reference. Enterprise integration guides are step-by-step.

Native ESM.

TypeScript-first. Typed errors, services, and layers. Effect<Success, Error, Requirements> is the core type.

Structured Cause with stack traces per fiber. Pretty-printed error trees for concurrent failures.

~120kB min for core. Heavy but replaces multiple libraries (fp-ts, retry, DI, streaming).

Modular packages: effect, @effect/schema, @effect/platform are separate.

Comprehensive but dense. Assumes functional programming familiarity. Examples are thorough.

Native ESM.

Fully typed message publishing and receiver verification. Workflow steps are typed.

HTTP error codes with messages. Delivery failure callbacks include status and body.

~10kB min. Tiny SDK for serverless message queuing.

Minimal API surface — Client and Receiver are separate imports.

Clear quickstart for Next.js, Vercel, and CF Workers. Workflow patterns well-documented.

Native ESM. Edge-compatible.

Config-as-code with full TS. Collection types auto-generated. Fields, hooks, and access control typed.

Validation errors include field paths and messages. Server errors are descriptive.

~200kB min. Full CMS framework — includes admin panel, auth, and API generation.

Monolithic framework by design. Plugins add weight but core is unavoidable.

Excellent config reference. Every field type, hook, and access control pattern documented.

Native ESM in v3.

Generated query builder is perfectly typed. e.select() infers return shape from query. Zero runtime overhead.

Error messages include hints, details, and position in query. Best error UX among databases.

~60kB min for client + query builder. Codegen output is project-specific.

Query builder is monolithic but generated per-schema. Client itself is small.

Interactive tutorial. Generated query builder has complete reference. Migration docs are thorough.

Native ESM.

Generated client from schema — every table, column, and relation is typed. xata codegen regenerates on schema change.

API errors include message and status. Validation errors include field-level detail.

~25kB min. Lightweight client with built-in search and aggregations.

Generated client is schema-specific. Core methods not individually importable.

SDK reference generated from schema. Framework quickstarts for Next.js, SvelteKit, Remix.

Native ESM.

Fully typed block, page, and database types. Response unions are comprehensive. Auto-generated from OpenAPI.

APIResponseError with code, message, and status. RequestTimeoutError for slow responses.

~20kB min. Minimal dependencies, just a typed HTTP client.

Single Client class but lightweight enough that it doesn't matter.

Official SDK with examples for every endpoint. TypeScript-first documentation.

Native ESM.

Every cloud resource is a typed class. Input/Output types enforce dependency tracking. Provider packages are auto-generated.

Deployment errors include resource URN and diff. Some provider errors are passthrough from cloud APIs.

Provider packages are massive (AWS ~200MB). CLI tool, not bundled in apps.

Import specific resource modules (@pulumi/aws/s3) to reduce load time.

Every resource has auto-generated docs with examples in TS, Python, Go, C#.

CJS primary. ESM support improving.

turbo.json schema is fully typed. TypeScript config support. Workspace types inferred from package.json.

Clear error messages with file path and line number. Suggestions for common mistakes.

Rust binary — no JS bundle. Executes as a system process.

Not applicable — binary tool, not a library.

Excellent config reference. Migration guides from Lerna and Nx.

Not applicable — CLI tool.

Plugin API is fully typed. Workspace config types are comprehensive. Generator and executor types are well-defined.

Actionable error messages with suggested fixes. nx report helps with debugging.

~200kB min for core. Plugins add more. Daemon process offloads computation.

Plugin-based architecture. Import only the plugins you use.

Plugin API docs with examples. Generator and executor development guides are thorough.

Native ESM support.

WASM-based. Config schema is fully typed. Rule options have TypeScript definitions.

Rich diagnostics with code frames, suggestions, and fix previews. Best-in-class error output.

Rust binary via WASM or native. No JS runtime overhead for linting.

Not applicable — binary tool.

Every rule documented with examples. Configuration reference is comprehensive.

Not applicable — CLI tool with WASM option.

Types for options and API. Plugin types are well-defined. format() returns typed Promise.

Parse errors show location. Options errors are descriptive. Silent on formatting — by design.

~200kB min. Includes parsers for multiple languages.

Parser plugins can be loaded separately. Core is monolithic.

Options playground. API reference is concise. Plugin development guide exists.

Native ESM since v3.

Built TypeScript-first. Plugin system flows types end-to-end. Inferred session/user types per config.

Structured APIError with code, status, and message. Client throws typed errors per endpoint.

Modular core. Plugins are opt-in. Server bundle stays small for typical setups.

Plugin architecture means you only pay for what you use. ESM-first.

Framework-specific guides (Next.js, SvelteKit, Solid) with copy-paste setup.

Native ESM. Modern build tooling throughout.

Type-safe routing with full inference for params, search, and loaders. Codegen for route tree.

Errors point to the exact route file. Loader errors include route path and search params.

~25kB gzip with router + devtools. Reasonable for the type-safety it gives.

Routes split per file. Devtools are a separate import.

Comprehensive guides, examples, and API reference. Migration guide from React Router included.

Native ESM with dual CJS for compatibility.

create<State>() pattern gives full type safety for stores and selectors.

Errors are minimal — Zustand has very little surface to throw from.

1.5kB gzip. One of the smallest state libraries available.

Middleware (persist, devtools, immer) are separate entry points.

Concise docs with patterns for slices, persistence, and TypeScript usage.

Dual ESM/CJS with proper exports map.

hc<AppType> infers every route's params, body, and response types end-to-end.

Inherits Fetch error behavior. HTTPException class for structured throws.

Core is ~20kB. Client adds minimal overhead.

Highly modular — pick middleware, helpers, and adapters individually.

RPC mode is documented with full examples per framework adapter.

ESM-first, runtime-agnostic.

createInsertSchema and createSelectSchema generate Zod schemas from Drizzle tables automatically.

Inherits Zod's excellent error format with path and message.

~3kB. Tiny adapter on top of Drizzle and Zod.

Per-table schemas are independent imports.

Drizzle docs cover the schema generation patterns clearly.

Native ESM.

Auto-generated TypeScript SDK from OpenAPI. Full type coverage on customer, order, and subscription resources.

Structured error responses with detail field per validation issue. SDK throws typed exceptions.

~80kB min. Larger because it covers checkout, subscriptions, benefits, and webhooks.

SDK exports per resource; full client is the typical import path.

Per-language SDK pages, framework adapters (Next.js, Nuxt), webhook guides.

Native ESM with dual CJS published.

Auto-generated SDK with full Zod-validated request and response types.

Stripe-style errors with code, message, and doc_url. SDK exceptions are typed per error class.

~20kB min. Focused API surface for link, analytics, and workspace operations.

Modular operations; only used resources are bundled.

Mintlify-powered with copy-paste examples for every endpoint and SDK method.

Native ESM.

Full TypeScript types for users, workflows, channels, and message schedules.

Structured errors with code, status, and request_id. Workflow trigger errors include step context.

~60kB min. Covers notifications, workflows, schedules, and tenants.

Resource-based exports; client typically imported whole.

Clear guides per channel (email, SMS, in-app). React in-app SDK and server SDK both documented.

ESM with CJS fallback.

Mirrors OpenAI SDK structure. Full types for chat completions, streaming, and tool calls.

Structured errors with code and message. Rate limit errors include retry-after.

~80kB min. Comparable to OpenAI SDK.

Single client class. Resource-based exports for advanced usage.

OpenAI-compatible docs make migration trivial. Model-specific guides are clear.

Dual ESM/CJS with proper exports.

Generic types for predictions; model-specific input/output via type parameters. Streaming supported.

ApiError class with status and detail. Model errors include logs from the prediction run.

~35kB min. Lightweight HTTP client.

Functional exports for run, stream, and predictions.

Model-specific docs auto-generated. JS SDK README covers common patterns.

Native ESM, runtime-agnostic.

Full TypeScript support out of the box. Type-level expect matchers with vi.fn() inference.

Diff-based assertion failures are clear and colorized. Stack traces point to exact line.

Test runner — bundle size not a consumer concern. Vite-native so no extra bundler overhead.

Import only what you use: test, expect, vi, bench. No side-effect imports needed.

Complete API reference. Config options documented with TypeScript types.

ESM-first. CJS compat via Vite's interop layer.

First-class TypeScript. Page, Locator, and BrowserContext are fully typed. Fixture types are generic.

Assertion errors show actual vs expected with DOM snapshot. Trace Viewer shows full timeline on failure.

Browser binaries are separate install. Test runner itself is ~5MB. Not a browser concern.

Monolithic package but modular internally. Import from @playwright/test is the single entry point.

API reference auto-generated from TypeScript. Codegen and fixtures guide are excellent.

Full ESM. Works with all Node.js module systems.

Auto-generated $types per route. load() return types flow to PageData. Form action types are inferred.

Vite-powered error overlay. Route and layout errors include file location and helpful context.

~10kB client runtime. Svelte compiles to vanilla JS — no virtual DOM overhead.

Every import is tree-shakeable. Kit adapter code is eliminated at build time.

svelte.dev learn track and Kit docs are tightly integrated. Framework concepts explained progressively.

ESM-native. Svelte components compile to ES modules.

Route handler types are inferred end-to-end. Body, query, params, and response all typed without schemas.

TypeBox validation errors are human-readable. Plugin conflicts are caught at type-check time.

~50kB min. Bun-native so no Node polyfills. Fastest JS HTTP framework in benchmarks.

Plugin-based architecture. Each plugin is a tree-shakeable import.

elysiajs.com docs cover every plugin with TypeScript examples.

ESM-only. Bun-native by design.

Query builder types are fully inferred from your DB interface. Column names and join conditions are type-checked.

SQL-level errors from the underlying driver with query context. Type errors at compile time prevent most runtime issues.

~80kB min. Pure query builder, no ORM overhead.

Modular dialects (PostgreSQL, MySQL, SQLite). Import only the dialect you use.

API reference from TypeScript types. SQL-to-Kysely cookbook is invaluable for getting started.

Dual ESM/CJS. Works in Node, Bun, Deno, and edge runtimes.

Components are fully typed. Variant types via CVA give exhaustive autocomplete for props.

CLI errors on add are clear. Component errors are React + Radix UI errors — generally readable.

Zero runtime SDK — components are source files. Bundle size = only what you import.

By definition: you own the source. Dead code elimination is perfect.

Per-component live preview with code. Theming and customization guides are detailed.

All generated code is ESM. Tailwind v4 compat fully supported.

All components are typed. Email-specific prop types (href, src) are correctly typed.

React render errors. CLI gives clear errors for missing components or broken imports.

~25kB min for full component set. Each component is tree-shakeable.

Import individual components. Container, Text, Button are separate exports.

Per-component playground at react.email. Preview server docs are clear.

ESM-first. Node-compatible for server-side rendering.

Full type inference from schemas. InferOutput<typeof schema> gives the derived type.

Structured ValiError with path, expected, received. Custom error messages per validation.

~1kB for basic schema. Tree-shaking removes unused validators. Dramatically smaller than Zod.

Every validator is a separate export. Best tree-shaking in the validation library space.

Per-validator docs with TypeScript examples. Guides for forms, async validation, and transforms.

ESM-native. No CJS compatibility layer needed.

100% type-safe routing. Params, search params, and loader data all inferred. No casting needed.

Type errors at navigation time for missing params. Runtime errors include route context.

~60kB min. Heavier than React Router but type safety justifies it for large apps.

Router, Link, and hooks are separate exports. Some overlap in bundles for code-split routes.

Type safety patterns are the highlight. Search params as state management is uniquely well-documented.

Full ESM. Framework-agnostic core with React adapter.

State type inferred from create() callback. Middleware types compose correctly. immer and persist are typed.

Zustand itself adds minimal errors. React DevTools integration shows state changes clearly.

~3kB min gzip. Possibly the smallest state manager for what it does.

Middleware is opt-in imports. Core create() is independent of all middleware.

Well-structured guides: TypeScript, middleware, slices, testing. README is comprehensive.

Dual CJS/ESM with correct subpath exports for each middleware.

File route config is fully typed. Client gets typed URLs back. Framework adapters preserve types end-to-end.

UploadThingError with code and message. Client-side errors include the failed route name.

~45kB min. Client SDK is heavier than bare fetch but includes progress and retry logic.

Framework adapters are separate packages. Core upload logic shared.

Framework-specific guides (Next.js, SvelteKit, Solid). Concepts docs are sparse but examples cover most cases.

ESM-native across all adapters.

Generic typed collections via pb.collection<MyType>(). Auto-generated TypeScript from CLI.

ClientResponseError with status, response, and data. Validation errors include field-level messages.

~36kB min. Remarkable for a full BaaS SDK with realtime.

Single PocketBase class. Services accessed as properties — no individual tree-shaking.

Complete API reference. Realtime subscriptions and file upload docs are clear and concise.

ESM-native. Works in Node, Bun, Deno, and browsers.

Loader and action return types propagate to useLoaderData. Form action types are inferred. Route module types are exported.

ErrorBoundary gets typed error. Loader errors show response status. Dev overlay is clear.

~15kB client runtime. Server code never ships to client by design.

Route-based code splitting is automatic. Only used routes are bundled.

Data loading model explained thoroughly. Vite integration docs are complete.

ESM-first. Vite-based build in v2.

Auto-imports are type-safe. useAsyncData and useFetch return types are inferred. Nitro server routes are typed.

Vite-powered error overlay in dev. Module errors include module name. Some auto-import errors are cryptic.

Vue's ~30kB + Nuxt runtime ~15kB. Code splitting by route is automatic.

Modules are tree-shaken at build time. Auto-imports only bundle used composables.

Comprehensive guides and API reference. nuxt.new playground for testing.

ESM-native. Nitro server supports multiple runtimes.

v4 config is TypeScript-first. IntelliSense extension provides full autocomplete for all utilities.

PostCSS build errors are clear. Unknown utility classes are silent by default (just no style).

CSS-only — no JS runtime. Output is only used classes. Typically 5-50kB in production.

CSS purging is automatic. Only utilities present in your source are included in output.

Every utility documented with live preview. Search is instant. Playground for rapid prototyping.

PostCSS plugin. v4 uses a CSS-native engine. No JS module format concerns.

SDK auto-generated from OpenAPI. Val runtime is TypeScript-native with Deno types.

Structured errors with clear messages. Runtime errors show in eval output directly.

<10kB. Minimal wrapper over REST API. Most interaction is browser-based.

Modular API client. Import only the methods you need.

OpenAPI-generated reference. Every val is a runnable example in the product itself.

Native ESM. Deno-compatible imports.

OpenAI-compatible types. Full inference on chat, completion, and embedding responses.

Structured JSON errors matching OpenAI format. Rate limit info in headers.

~20kB min. Lightweight wrapper. OpenAI SDK can also be used directly.

Single client class pattern. Not modular but small enough it doesn't matter.

API reference with per-model examples. OpenAI compatibility documented clearly.

Native ESM support.

Infrastructure components are fully typed. $app, $resolve return typed outputs. Zero codegen needed.

sst dev shows real-time errors from Lambda. Build errors reference exact config line.

CLI tool — not bundled into app. Runtime helpers are <5kB.

Resource helpers are individual imports. No monolithic bundle.

Component reference per AWS service. Examples with full stacks. Discord fills gaps.

Full ESM. TypeScript config files supported natively.

Provider-agnostic types. generateText, streamText, generateObject all fully typed with Zod schema inference.

Provider errors wrapped with consistent structure. Retry logic built in.

Core is ~15kB gzip. Provider packages are separate and small.

Separate packages: ai, @ai-sdk/openai, @ai-sdk/anthropic. Import only what you use.

Excellent docs with streaming, tool-use, and structured output examples. Framework guides for Next.js, SvelteKit.

Native ESM throughout.

Auto-generated from OpenAPI. verifyKey returns typed ratelimit and metadata.

Structured Result type — no thrown errors. .error contains code and message.

<8kB gzip. Minimal fetch wrapper with types.

Individual method imports available. Core client is already tiny.

Every SDK method documented with examples. Mintlify-powered reference.

Native ESM.

hc<AppType> gives fully typed client from server routes. Zero codegen. End-to-end type safety.

Fetch errors pass through. Hono's own validator errors are structured.

Client is ~3kB. Server framework is ~14kB. Ultralight.

Middleware, validators, and helpers are all separate imports.

RPC client docs explain the type inference pattern clearly. Multi-runtime guides included.

ESM-only. Works on every JS runtime.

Built into Deno runtime. Deno.openKv() returns typed KV instance. Generic get<T>() for value types.

Runtime errors are clear with stack traces. Permission errors explain what's needed.

Built into Deno runtime. Zero additional bundle size.

Runtime API — no imports needed beyond Deno namespace.

KV manual in Deno docs. Examples for common patterns. Consistency model well-explained.

Deno is ESM-only by design.

Full type inference from auth config. Plugins add typed methods automatically. Client and server types stay in sync.

Auth errors include codes and suggested fixes. Session errors explain what expired and why.

~15kB core. Tree-shakeable plugins. Server-side heavy lifting keeps client light.

Plugin architecture means you only import what you use.

Framework-specific guides with copy-paste examples. Plugin API documented with types.

ESM-first with CJS fallback.

Uses OpenAI SDK — full type support. Model string union types via community packages.

Errors include model, provider, and fallback info. Rate limit errors show reset time.

Reuses OpenAI SDK. No additional bundle cost.

OpenAI SDK is modular but most apps import the full client.

API matches OpenAI spec. Extra headers for routing well-documented.

Via OpenAI SDK — full ESM.

Auto-generated types from OpenAPI. Every method returns typed responses. Error types are unions.

Errors include code, message, and doc_url. Rate limit info in headers.

~12kB. Minimal dependencies.

Single client instance pattern. Resource methods aren't independently importable.

SDK reference auto-generated. Quickstart guides per framework.

Native ESM with CJS fallback.

Typed query results with generics. Extension types (pgvector) integrate cleanly.

Postgres error messages pass through. WASM initialization errors could be clearer.

~3MB WASM binary. Lazy-loadable but significant for client-side apps.

Extensions loaded separately. Core is monolithic WASM.

README covers basics well. Extension loading docs are sufficient. Missing advanced patterns.

ESM-only.

Task definitions fully typed. Payload schemas with Zod. Run metadata typed. io methods return typed results.

Task errors include run ID, step name, and retry info. Dev server errors are actionable.

~25kB. Server-side task definitions.

Task types imported from SDK. Integration packages are separate.

v3 docs rebuilt. Task patterns, scheduling, concurrency — all with examples.

ESM-first.

Event schemas define function inputs. Step tooling is fully typed. Return types inferred from steps.

Step failures include function ID, step name, retry count. Dev server shows full error context.

~30kB. Server-side SDK.

Single inngest client. Serve handlers per framework are separate imports.

Concepts are clear. Step patterns (sleep, waitForEvent, invoke) well-documented with real examples.

ESM with CJS fallback.

Schema-aware search results. Index creation is typed. Plugin types extend base types cleanly.

Schema validation errors are clear. Search errors are minimal — mostly type errors at build time.

~10kB core. Plugins add incrementally.

Plugins imported separately. Core search engine is minimal.

Getting started in 2 minutes. Vector, full-text, hybrid modes documented. Plugin catalog.

ESM-first. Works in browser, Node, Deno, edge.

Typed responses for scrape, crawl, map. Options objects fully typed. Webhook payloads typed.

HTTP errors include status, message. Rate limit errors show reset time. Crawl status errors are clear.

~8kB. Minimal dependencies.

Single client class. Methods not independently importable.

Every method documented with examples. Markdown extraction options well-explained.

Dual ESM/CJS.

Party.Server interface is typed. onConnect, onMessage handlers typed. Client connection types included.

Connection errors are clear. Room errors include party name context.

~5kB client SDK. Server runs on Cloudflare.

Client and server are separate imports. Minimal surface area.

Getting started is fast. API reference covers main patterns. Advanced use cases rely on examples.

ESM-first. Cloudflare Workers compatible.

Room, Participant, Track types are comprehensive. Events are typed enums. React hooks return typed state.

Connection errors explain ICE/TURN issues. Codec errors could be more specific.

~80kB. WebRTC and media handling is inherently heavy.

Core and React components separate. Media track types bundled together.

SDK reference, framework guides, AI agent tutorials. Self-hosting documented.

ESM with CJS fallback.

Types exist but user profile type is loose (Record<string, any>).

Generic error messages. Often need to check network tab.

~15kB gzip. Lightweight SDK.

Server/client split but not granular.

Good but Auth0 has too many products — easy to get lost.

ESM supported.

Fully typed. Great IntelliSense for config options.

SDK errors are clear. Source map issues can be confusing.

~90kB gzip with all integrations. Heavy for a monitoring SDK.

v9 improved this significantly with modular integrations.

Excellent docs with framework-specific guides.

Full ESM in v9+.

Generated types from schema. Best-in-class query typing.

P2002, P2025 error codes. Need to look up what they mean.

Includes query engine binary. 5-15MB depending on platform.

Not tree-shakeable. Engine binary is always included.

Comprehensive with interactive examples.

CJS primary. ESM experimental in v5.

Types exist but event properties are Record<string, any>.

Silent failures by design (analytics shouldn't break your app).

~80kB gzip with all autocapture features. Heavy for analytics.

Bundle includes session recording, feature flags, surveys — all in one.

Framework-specific guides. Good API reference.

ESM supported.

Types need manual augmentation for custom session fields. Module augmentation required.

Callback errors often swallowed. Debug mode needed for troubleshooting.

~20kB gzip. Lightweight auth solution.

Provider configs add weight but core is small.

v5 docs incomplete. v4→v5 migration guide has gaps.

ESM in v5, CJS in v4.

Auto-generated from OpenAPI spec. All resource types are precise.

Structured error objects with status and message. Deployment errors could include more context.

~60kB min. Server-side only so acceptable for CI/automation use cases.

Resource-based structure allows some tree-shaking but not granular.

API reference is auto-generated. Quickstart examples exist but are sparse.

Native ESM.

workers-types package provides full types for all CF APIs. Requires explicit triple-slash reference.

CLI errors are often multi-line with no clear action item. Worker runtime errors are minimal.

Wrangler is a CLI dev tool — not imported in app bundles. N/A for production.

Runtime bindings (KV, R2, Durable Objects) are injected at deploy, not bundled.

Cloudflare docs are among the best in the industry. Every binding has examples.

Workers are ESM-native. CJS not supported.

Types available but many response shapes use loose typings. Auto-complete works for top-level resources.

Error codes with doc links. Messages are terse — detail lives behind the link.

~200kB min. Large for what it does. Server-only saves it from being a problem.

Monolithic client — the full SDK is loaded regardless of which APIs you use.

Dedicated error code directory. Every endpoint has curl + SDK examples.

CJS primary, ESM available in recent versions.

Basic types for queries and results. ResultSet typing is correct but generic — no schema inference.

SQLite error codes pass through. libSQL-specific errors (replication lag, sync) are sparse.

~50kB min. Multiple build variants (node, web, memory) help keep bundles lean.

Client variants are separate entry points. Pick the one you need.

Good quickstart for Turso cloud. Embedded SQLite docs are thinner.

Native ESM. Edge-compatible variant available.

Types exist but collection schemas use generic Record types. Search response typing is adequate.

Errors include HTTP status and message. Could include more context on validation failures.

~25kB min. Reasonable for a search client.

Modular but most apps use the full client for search + indexing.

API reference with examples. Some features documented only in guides, not SDK ref.

ESM supported.

Types for messages, templates, and server management. Some response types are loose.

Errors include ErrorCode number and Message string. Well-documented error catalog.

~15kB min. Minimal dependencies.

ServerClient and AccountClient are separate. Methods on each are not tree-shakeable.

Every method documented with request/response examples. Error codes all listed.

CJS primary. ESM via wrapper.

Flag evaluation is typed but flag values return LDFlagValue (union type). Context types are good.

SDK logs warnings for missing flags or invalid contexts. Error events are structured.

~60kB min for server SDK. Client SDK is ~40kB gzip.

Single SDK import. All evaluation logic bundled together.

SDK-specific guides for 20+ platforms. API reference is auto-generated.

ESM support in newer SDK versions. Older versions CJS-only.

Types via @types/mapbox-gl. Community-maintained but reasonably complete for core API.

Map rendering errors are vague. Style spec validation errors lack specifics.

~250kB gzip. Includes WebGL renderer. Heavy but necessary for map rendering.

Monolithic bundle. Map renderer cannot be split.

Interactive examples for every feature. Style spec reference is comprehensive.

ESM build available but primary distribution is UMD.

Core methods typed. Event properties accept Record<string, any>. Plugin types are well-defined.

Analytics should not break the app — errors are mostly swallowed. Debug mode shows integration loading issues.

~35kB gzip for core. Each destination plugin adds weight.

v2 (analytics-next) is fully modular. Destinations are separate packages loaded on demand.

Spec docs are clear. SDK setup guides are solid. Plugin development docs are thin.

Native ESM in analytics-next.

Search response types are good. Index settings and rule types are adequate. Hit type requires manual generic.

AlgoliaSearchError with status, message, and transporterStackTrace for debugging.

~40kB gzip for algoliasearch. InstantSearch adds more.

v5 improved modularity. Search and recommend clients are separate.

Interactive API explorer. Method-level docs with examples in multiple languages.

Native ESM in v5.

Schema-aware types via generics. Collection and field types require manual definition but then propagate.

API errors forwarded with status and message. SDK-specific errors for connection issues.

~20kB min. Composable client — pick REST, GraphQL, or realtime transport.

Modular composable architecture. Import only the commands you use.

SDK reference auto-generated. REST and GraphQL examples side by side.

Native ESM.

Store and Admin client types from OpenAPI. Product, cart, and order types are solid.

Structured errors with type, message, and code. Validation errors include field details.

~50kB min. Covers full storefront API surface.

Store and Admin clients are separate. Individual resource methods not tree-shakeable.

API reference from OpenAPI spec. Storefront and admin SDK guides are separate.

Native ESM.

Full types for all auth methods — OTP, Magic Links, OAuth, Sessions. Response types are precise.

StytchError with error_type, error_message, status_code, and error_url linking to docs.

~40kB min. Server SDK. Frontend SDK is separate and lighter.

Single client with all auth methods. Cannot import only OTP or only OAuth.

Method-level reference. Auth flow guides include SDK examples. Migration docs for switching providers.

Native ESM.

Event types and user properties are typed. Identify and Revenue classes have good IntelliSense.

Silent failures for tracking. Opt-out and config errors logged to console.

~35kB gzip. Plugin architecture keeps core lean.

Plugins are separate packages. Core SDK is not granular.

SDK setup guides per platform. Ampli (typed SDK wrapper) adds schema enforcement.

Native ESM.

Flag values are typed as string | boolean | number. Identity and trait types are solid.

SDK errors for initialization failures. Flag evaluation returns defaults on error.

~15kB gzip. Lightweight for a feature flag SDK.

Single client import. React hooks are a separate entry point.

SDK guides for 15+ platforms. API reference is auto-generated from OpenAPI.

Native ESM with CJS fallback.

Uses AWS S3 SDK types. S3-compatible so all S3 types work. R2-specific features need manual typing.

S3-compatible errors. R2-specific limits (object size, multipart) return standard S3 error codes.

~150kB min via @aws-sdk/client-s3. Workers binding API is zero-bundle-cost.

AWS SDK v3 modular architecture. Workers binding has no SDK weight.

R2 docs reference S3 compatibility. Workers binding docs are thorough. Separate from AWS docs.

ESM via AWS SDK v3 or Workers native.

Workflow and activity types flow end-to-end. Signal and query types are inferred from definitions.

WorkflowFailedError includes cause chain. Activity timeout errors specify which timeout was hit.

~300kB min. Includes V8 isolate for workflow sandboxing. Heavy but necessary for determinism.

Client, worker, and workflow packages are separate but each is large.

Concept docs are excellent. SDK reference per language. TypeScript samples repo is comprehensive.

ESM support improving. Some packages still CJS-primary.

D1Database binding is typed. Query results use generic D1Result<T> — requires manual type param.

SQLite errors pass through. D1-specific errors (size limits, read replicas) are minimal.

Zero SDK weight — D1 is a Workers binding. No client library to bundle.

Native binding — nothing to shake. Types come from @cloudflare/workers-types.

Quickstart and API reference are solid. Advanced patterns (batch, migrations) covered. Drizzle integration guide is helpful.

Workers-native. ESM only.

Types available via @types/dd-trace. Tracer config and span types are adequate but not comprehensive.

Tracing errors are logged silently. Configuration errors surface at startup but lack detail.

~500kB min. Includes native modules for profiling. Server-only so less critical.

Monolithic tracer — auto-instrumentation patches all supported libraries on import.

Setup guides per language are clear. APM and tracing concepts well-explained.

CJS primary. ESM support is experimental and requires --loader flag.

Community SDK. File, node, and component types are well-defined. Plugin API types via @figma/plugin-typings are excellent.

HTTP errors with status and message. Rate limit errors include retry-after.

~15kB min. Thin REST client wrapper.

Single client class. Plugin typings are declaration-only.

Community SDK docs are adequate. Official Plugin API docs are excellent.

ESM supported.

Types for bucket and object operations. S3-compatible types are adequate. Some callback signatures still present.

S3-compatible error codes. Connection and auth errors are clear.

~80kB min. Server-side only. Includes stream handling utilities.

Single Client class with all methods. Cannot import individual operations.

API reference with examples for every method. S3 compatibility matrix is helpful.

CJS primary. ESM build available in recent versions.

Query result types use generics. Insert types enforce column matching. Format-specific result types are well-defined.

ClickHouseError with code, message, and query_id. Includes original SQL in error context.

~30kB min. Separate builds for Node.js and web.

Client variants (node, web) are separate entry points.

README covers common patterns. Examples repo for advanced use cases.

Native ESM.

Auto-generated types from Elasticsearch spec. Every API endpoint fully typed. Search response generics work well.

ResponseError includes meta, body, and statusCode. Connection errors are descriptive.

~150kB min. Includes all API methods and transport logic.

Single client with all 400+ API methods. Cannot import individual endpoints.

API reference auto-generated. Getting started guide is clear. Advanced patterns in examples repo.

Native ESM in v8+.

Metric types (Counter, Gauge, Histogram, Summary) are well-typed with label generics.

Throws on duplicate metric registration with clear message. Label validation errors are specific.

~20kB min. Lightweight metrics library.

Individual metric types importable. Default metrics are optional.

Good README with examples for each metric type. Community-maintained.

ESM supported in recent versions.

Plugin SDK is fully typed. DataQuery, DataSourceApi, and PanelPlugin types are comprehensive.

Plugin development errors are descriptive. Data source errors include status and message.

~100kB for @grafana/data. Plugin SDK packages add up. Used in plugin builds only.

Modular packages: @grafana/data, @grafana/ui, @grafana/runtime are separate.

Plugin development tutorials are solid. Component library Storybook helps. API reference is auto-generated.

ESM in latest versions.

Uses standard pg driver — @types/pg types apply. CockroachDB-specific features (AS OF SYSTEM TIME) are untyped.

Postgres error codes with CockroachDB extensions. Serialization errors include retry guidance.

Standard pg driver — ~30kB min. No additional SDK needed.

Standard pg module structure. Pool and Client are separate.

Node.js quickstart is clear. Connection string examples for serverless. ORM integration guides.

pg is CJS primary. Works with ESM via default import.

Sender types are well-defined. Column types enforce correct data types. Query results use pg driver types.

ILP sender errors include line number and column. Connection errors are descriptive.

~15kB min. Focused on ILP (Influx Line Protocol) ingestion.

Minimal API surface — Sender class is the main export.

Quickstart covers Node.js integration. ILP reference is clear. Query via pg driver documented.

Native ESM.

Full TypeScript support. Auto-generated types for all API resources. Generic response types.

HTTP errors with status code and message. Rate limit errors include retry-after.

~120kB min. Covers 200+ API endpoints across many resource types.

Resource-based imports available. Import only the API groups you need.

README covers basics. API coverage mirrors GitLab REST docs. TypeDoc generated reference.

Native ESM with CJS fallback.

Flat config has better TS support. Rule meta types exist. Plugin types via @types/eslint.

Lint messages include rule ID, severity, and fix suggestions. Config errors are descriptive.

~150kB min. Plugin dependencies add up quickly.

Plugin architecture helps but core is monolithic. Flat config is an improvement.

Every rule documented with options and examples. Plugin development guide is thorough.

Flat config supports ESM. Legacy config was CJS-only.

Config schema is fully typed. Manager types define how each ecosystem is handled. Preset types are well-defined.

Detailed logs explain why each dependency was updated or skipped. Debug mode is verbose and helpful.

~500kB+ with all managers. Designed to run in CI, not in-browser.

Monolithic by design — needs all managers and datasources at runtime.

Config option docs are exhaustive. Preset reference is practical.

CJS primary. Internal modules use ESM patterns.

CLI is TypeScript internally. API client has typed responses. Vulnerability types are well-defined.

Vulnerability reports include severity, CVE, and fix recommendations. CLI output is actionable.

CLI tool — large install. Not meant for browser use.

CLI tool, not a library. Full install required.

CLI reference is thorough. API docs cover project and issue endpoints. Integration guides per CI.

CJS primary. Node.js CLI tool.

Bundler plugins are typed. Upload options have TypeScript interfaces. Coverage format types exist.

Upload errors include HTTP status and server message. Token validation is clear.

~10kB per bundler plugin. Lightweight upload wrapper.

Separate packages per bundler (webpack, vite, rollup).

Bundler plugin setup per framework. Upload token configuration is straightforward.

Native ESM. Modern bundler plugin patterns.

Full TypeScript SDK. Package analysis types are well-defined. Alert and score types are comprehensive.

Structured errors with type, title, and detail. Supply chain risk alerts include severity and remediation.

~15kB min. Focused API client.

Method-based imports available for different API sections.

SDK README covers main use cases. API reference mirrors REST docs.

Native ESM.

Official SDK is fully typed. JSON:API responses get typed wrappers per resource.

JSON:API error envelope with detail and source. Webhook signature errors are explicit.

~45kB min. Reasonable for a full storefront SDK.

Function-based exports allow tree shaking unused resources.

API reference is solid. SDK README covers main flows. Some advanced topics need API docs.

ESM-first with dual builds.

Generated TypeScript types from pipe schemas via tb CLI. HTTP client itself is thin.

ClickHouse exceptions surface through with code and message. Query errors include line numbers.

Very small — Tinybird is HTTP-first, the SDK is mostly fetch wrappers.

Per-pipe imports keep bundles minimal.

API reference is solid. SDK patterns are documented across guides per framework.

Native ESM.

SDK is typed but document models use generic Record types. No schema inference from collections.

AppwriteException with code, message, and type. Error codes map to documentation sections.

~120kB min. Includes all service clients (account, databases, storage, functions).

Service clients are separate classes. Import Client + specific service for minimal bundle.

Per-service API reference with examples across 10+ platforms. Getting started is thorough.

Full ESM. Works in Node, Bun, Deno, and browsers.

StoryObj<typeof Component> gives fully typed stories. Controls are inferred from component props.

Storybook error overlay shows component and story errors. Addon conflicts are logged to console.

Dev-only dependency. ~1MB+ for the full Storybook build. Not a production concern.

Addons are opt-in. Core is modular but Storybook builds are typically complete installs.

CSF3 format docs are thorough. Per-framework setup guides cover React, Vue, Svelte, Angular.

Migrating to ESM. Most addons now support ESM. Legacy CJS compat still present.

Commands and assertions are fully typed. Custom commands typed via Chainable interface. cy.wrap generics work well.

Visual test runner shows exact assertion failure with DOM state. Time-travel debug makes errors obvious.

Dev dependency — browser binaries ~200MB. Not a production concern. npm package is ~5MB.

Single cypress package. Plugins and tasks are imported as needed.

Complete command reference with examples. Best practices guide is the best in E2E testing docs.

ESM support improved in v12+. ESM config and tests work with appropriate Vite integration.

Types cover config and secret retrieval. Dynamic secret names limit full type safety.

Clear messages for auth failures, missing configs. CLI output is excellent.

<5kB. REST wrapper. Most use is through CLI injection, not SDK.

Single client class. Small enough it doesn't matter.

CLI reference and SDK docs are separate and clear. Integration guides per platform.

ESM supported.

Query results typed via generics. Pipe parameters typed from schema. Auto-generation improving.

SQL errors from ClickHouse passed with line/column. API errors are structured.

<10kB. Fetch-based client.

Individual pipe and datasource clients. Import what you need.

SDK reference auto-generated. REST API docs with curl examples for every endpoint.

Native ESM.

CLI tool primarily. No TS SDK — integration is via CLI commands in CI pipelines.

Build errors mirror Docker buildx output with added cache hit/miss info.

CLI binary. No JS package to bundle.

N/A — CLI tool, not a library.

Concise CI integration guides. Docker build flags documented with depot equivalents.

N/A — CLI tool.

Schema definition in TypeScript with full types. Generated client types from GraphQL schema.

GraphQL errors are structured. Schema validation errors during build are clear.

SDK is ~12kB. Generated client varies by schema size.

Schema builders imported individually. Client is monolithic.

Schema and resolver docs are good. Edge-specific patterns could use more examples.

Native ESM.

Typed hooks and components. useUser(), useStackApp() return typed objects. Server-side helpers are typed.

Auth errors are readable. Some edge cases return generic messages without context.

~45kB with UI components. Headless mode is lighter.

Components can be imported individually but shared dependencies add weight.

Quick start is good. Advanced patterns (custom flows, self-hosting) need more examples.

Full ESM support.

Auto-generated from OpenAPI spec. All endpoints typed. Webhook event types included.

HTTP errors are structured with codes. Some webhook validation errors are vague.

~20kB. Server-side SDK so less critical.

Full client import. Individual resource methods not separately importable.

API reference is auto-generated. Guides cover common flows but gaps in advanced use cases.

ESM-first.

Shape definitions are typed. Sync state types are well-defined. Client generates types from Postgres schema.

Sync errors are clear. Shape subscription failures explain what went wrong.

~15kB client. Sync engine is lightweight.

Shape and client imports are separate. Sync utilities bundled together.

Shape API is well-documented. Integration guides for React and Expo. Migration docs exist.

ESM-first.

Core types for traces, spans, observations. Some wrapper types are any-heavy.

SDK errors are clear. API errors pass through with status codes.

~20kB. Server-side SDK.

Main client import. Decorators and wrappers imported separately.

Integration guides for LangChain, LlamaIndex, Vercel AI SDK. Tracing API well-documented.

Dual ESM/CJS.

Workflow and step types are defined. Input/output schemas typed. Some internal types leak as any.

Worker errors include step context. gRPC errors sometimes surface raw codes.

~50kB with gRPC dependencies.

gRPC client pulls in significant dependencies.

Workflow patterns documented. Self-hosting guide exists. Advanced features need more examples.

CJS primary. ESM support improving.

Vals are TypeScript by default. Global types for std library. No local type generation.

Runtime errors show in dashboard. Import errors are clear. Permission errors explain what's needed.

No client SDK — HTTP API or direct val imports.

Each val is an independent module.

API docs cover HTTP, cron, email triggers. Examples library is community-driven.

ESM-only. Deno-compatible imports.

Agent, tool, workflow definitions fully typed. LLM provider types are unified.

Agent errors include tool call context. Workflow step failures are logged. Some raw LLM errors pass through.

~60kB with dependencies. AI framework so expected.

Core and integrations are separate packages.

Getting started guide covers agents and tools. Advanced patterns still sparse.

ESM-first.

Secret retrieval is typed. Authentication methods typed. Some config options loosely typed.

Auth errors explain what credential is missing. Secret not found errors include path context.

~35kB. Includes crypto dependencies for E2E encryption.

Single client. Crypto deps not tree-shakeable.

SDK reference per language. Authentication guide covers all methods. Self-hosting documented.

Dual ESM/CJS.

Contact and event types defined. Transactional email types are basic. Template variables loosely typed.

API errors include message and status. Validation errors list failing fields.

~5kB. Minimal HTTP wrapper.

Single client. Methods not tree-shakeable individually.

API reference is clear. Integration guides exist. Webhook docs are minimal.

ESM-first.

Types exist but auto-complete for Firestore queries is weak.

Error codes like 'auth/invalid-credential' with no context.

820kB min, 198kB gzip. Massive even with tree-shaking.

Modular API exists but many devs still use compat (full bundle).

Good but scattered across Firebase, GCP, and community.

ESM via modular imports. Compat mode is CJS.

v3 has significantly improved types over v2. Smithy-generated types are accurate.

AccessDenied with no IAM context. ServiceException base class loses specificity.

v3 modular: @aws-sdk/client-s3 is ~150kB vs the old 2MB v2 monolith.

v3 is fully modular. Each service is a separate package. Major improvement.

Reference docs exist but are auto-generated and hard to navigate. Community answers fill the gap.

v3 supports ESM. Some middleware packages still CJS-only.

Types added late. Transformation options are loosely typed with string unions. Upload params are better.

API errors include message and HTTP status. Upload errors specify the failing field.

~250kB min. Heavy SDK designed for server-side. Frontend URL helper is lighter.

Monolithic v2 SDK. v3 (beta) improves modularity but not widely adopted yet.

Extensive docs for multiple languages. Node SDK examples are plentiful.

CJS primary. ESM support is recent and incomplete.

Types via @types/mixpanel-browser. Event properties are untyped Record<string, any>.

Silent failures for tracking. Network errors are not surfaced to the developer.

~40kB gzip. Acceptable for an analytics SDK with autocapture.

Single global mixpanel instance. No modular imports.

Setup guides are clear. Method reference exists but examples are sparse.

Primarily a script tag SDK. ESM build exists but is not the primary path.

Generic query results. RecordId type is well-done but response typing requires manual casting.

Query errors include message but context is minimal. Connection errors are generic.

~45kB min. WebSocket and HTTP transports included.

Single client bundle. Transport selection doesn't reduce size much.

SDK reference covers basic operations. Advanced patterns rely on SurrealQL docs.

Native ESM.

Node development types are well-defined. INodeType and IExecuteFunctions provide good structure.

Execution errors shown in UI. Programmatic error handling is basic. NodeApiError wraps HTTP errors.

n8n-workflow is ~60kB. Used for custom node development only — not in user applications.

Monolithic packages. Custom nodes import the full workflow engine types.

Custom node development guide is detailed. Community node examples help. API reference is auto-generated.

CJS primary. Some packages have ESM builds but ecosystem is CJS-heavy.

Minimal types. API responses are loosely typed. Community @types package fills some gaps.

API errors include error code and message. Rate limit errors are clear.

~10kB min. Thin wrapper around REST API.

Small SDK — tree-shaking is not a concern.

SDK README is minimal. Most developers use the REST API directly with fetch.

CJS primary with ESM build available.

Types via @types/newrelic. API surface is small — custom events and transactions. Auto-instrumentation is untyped.

Agent logs errors to file. Configuration errors appear at startup. Runtime errors are mostly silent.

~400kB min. Full APM agent with native dependencies. Server-only.

Agent patches Node.js internals on require. Cannot be tree-shaken by design.

Agent configuration reference is thorough. Custom instrumentation guide exists.

CJS only. ESM applications require --require flag workaround.

Write and query APIs typed. FluxTableMetaData provides column types. Point builder is well-typed.

HTTP errors with status. Flux query errors include line number but messages are terse.

~25kB min. Separate packages for write and query.

Write and query clients in separate packages. APIs package adds management endpoints.

Client library docs are adequate. Flux vs SQL confusion in v2/v3 transition.

Native ESM.

Community SDK. Types for routes, services, and plugins are basic. Official SDK is in Go.

Admin API errors include message and fields. HTTP status codes are correct.

~10kB min. Thin HTTP wrapper.

Small SDK surface — not a concern.

Community SDK docs are minimal. Most developers use curl or deck CLI.

ESM available.

Community SDK. Types are loose — most responses are Record<string, any>. Official SDK is in Go.

API errors include status and messages array. Permission denied errors include required policy.

~15kB min. Simple HTTP client wrapper.

Single client with all secret engine methods. Not modular.

README covers basic operations. Most developers refer to Vault HTTP API docs directly.

CJS only. Community-maintained.

Community SDK with typed endpoints. Issue, project, and board types are defined. Agile and v2/v3 APIs separated.

Atlassian API errors are inconsistent. Some include errorMessages array, others return HTML.

~60kB min. Covers Jira, Confluence, and Service Desk APIs.

Version-based clients (v2, v3, Agile) but each includes all endpoints.

Good README with examples. Auto-generated from Atlassian OpenAPI specs.

ESM supported.

Auto-generated types from OpenAPI. Environment, entity, and metric types are comprehensive.

Structured errors with constraintViolations array. API token scope errors are specific.

~100kB min per client package. Multiple packages for different APIs.

Separate packages per API surface. Import only the client you need.

SDK is auto-generated. Most developers use REST API with fetch. Enterprise documentation.

Native ESM.

TypeScript types for API responses. Pipeline and workflow types are well-defined.

Structured errors with message and detail fields. HTTP status codes are standard.

~40kB min. Focused on API client functionality.

Single client class. Most methods are on one object.

SDK docs are minimal. Most devs use REST API with fetch or the CLI instead.

ESM build available. CJS is primary.

Types generated from protobuf/gRPC definitions. Application and sync types are accurate.

gRPC status codes mapped to HTTP. Error details from server are preserved.

~90kB min. Includes protobuf runtime dependencies.

Generated client is monolithic. All service methods bundled together.

Auto-generated from proto files. Most users prefer CLI or REST API directly.

ESM available but CJS is the default build.

Community TypeScript bindings. Chart and release types are basic. Most Helm work is CLI-based.

Wraps CLI output. Error messages depend on Helm binary version.

Requires Helm binary. SDK is a wrapper, not standalone.

CLI wrapper pattern means everything is loaded.

Community maintained. Helm official docs focus on CLI usage, not SDK.

CJS primary. ESM support is incomplete.

Scanner is a Java tool. Node.js wrapper has minimal types. API client is community-maintained.

Scanner errors reference Java stack traces. API errors are JSON but sparse.

Requires JRE download. Node wrapper is thin but pulls Java binary.

Not applicable — wraps Java binary.

Scanner setup docs exist. API is web-based reference. No official Node.js SDK docs.

CJS only. Scanner wrapper is legacy JavaScript.

No official SDK. Community clients wrap the JSON API. Config types can be generated from schema.

JSON API returns structured errors with message and path to config issue.

Community clients are thin HTTP wrappers. ~5kB.

Minimal API surface. Single client class.

No SDK docs — use the Caddy JSON API docs directly. Most users prefer Caddyfile over API.

Community clients vary. Most support ESM.

Community SDK with basic types. Auto-generated from Swagger spec. Container and stack types are adequate.

JSON errors with message field. Docker API errors passed through.

~30kB min. Thin HTTP client over Portainer API.

Single client with all endpoint methods. No modular imports.

Swagger UI is the primary reference. No official Node.js SDK documentation.

ESM build available.

Community TypeScript client. Types for cluster and workload resources. Kubernetes types supplement.

Mixed Rancher and Kubernetes error formats. Not always clear which layer produced the error.

~40kB min. HTTP client wrapping Rancher API.

Monolithic client class. All resource methods bundled.

Community maintained. Rancher official docs focus on UI and CLI, not SDK.

ESM support in recent versions.

Community TypeScript client for Develocity API. Build scan types are auto-generated.

API errors include message and status. Build scan errors reference specific tasks.

~25kB min. REST API client.

Single client class. No modular architecture.

Develocity API docs are the reference. Node.js SDK is secondary to Gradle plugin ecosystem.

ESM build available.

No official TypeScript types. SDK is callback-based JavaScript. Community @types are incomplete.

XML-based errors from API. SDK wraps them but loses detail in translation.

~80kB min. Includes XML parsing dependencies.

Monolithic SDK from 2012 design. No modular imports.

SDK docs exist but feel dated. Most developers use REST API directly.

CJS only. No ESM build. Requires bundler workarounds.

No official TypeScript SDK. Community clients have basic types. Pipeline types are complex.

Error messages from Gate API vary. Pipeline execution errors can be nested and hard to parse.

~50kB min. Multiple API clients for different microservices.

Monolithic design. Different services require different client imports.

SDK barely documented. Most users interact via UI or REST API with curl.

CJS only. Legacy JavaScript patterns.