1,418 free skills
API Design skills
Skills for designing APIs — REST conventions, GraphQL schema design, versioning strategy, rate limiting, and OpenAPI contracts.
Sourced from real, public repositories — synced daily, never invented.
1,418 free skills
Skills for designing APIs — REST conventions, GraphQL schema design, versioning strategy, rate limiting, and OpenAPI contracts.
Sourced from real, public repositories — synced daily, never invented.
15 tools across six categories
13 of them never send your data anywhere
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api-versioning
1mangesh1/dev-skills-collection
Comprehensive guide to API versioning strategies, backward compatibility, deprecation, and lifecycle management. Use when user asks about "version API", "API compatibility", "breaking changes", "semantic versioning", "API evolution", "deprecation strategy", "backwards compatibility", "API migration", "version management", "sunset header", "API changelog", "schema versioning", "OpenAPI versioning", "GraphQL versioning", or mentions API lifecycle management, consumer migration, or version negotiation.
openapi-spec-generation
xfstudio/skills
Generate and maintain OpenAPI 3.1 specifications from code, design-first specs, and validation patterns. Use when creating API documentation, generating SDKs, or ensuring API contract compliance.
openapi-types
manastalukdar/ai-devstudio
Generate TypeScript types and client SDKs from OpenAPI specs
loom-rate-limiting
cosmix/loom
API rate limiting and quota management. Use when implementing request throttling, API quotas, backpressure handling, or abuse protection. Covers token bucket, leaky bucket, sliding/fixed window algorithms, and distributed rate limiting with Redis.
loom-webhooks
cosmix/loom
Webhook implementation and consumption patterns. Use when building webhook endpoints, receivers, or senders — covering HMAC signature verification, retry with exponential backoff, idempotency keys, delivery guarantees, replay protection, dead letter queues, payload design, and monitoring.
ascend-webhooks
hookdeck/webhook-skills
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protocol-selector
fatih-developer/fth-skills
Selects the most suitable API protocol (REST, GraphQL, gRPC) based on project requirements like latency, payload size, and real-time needs.
ai-automation-workflows
inference-sh/skills
Build automated AI workflows combining multiple models and services. Patterns: batch processing, scheduled tasks, event-driven pipelines, agent loops. Tools: inference.sh CLI, bash scripting, Python SDK, webhook integration. Use for: content automation, data processing, monitoring, scheduled generation. Triggers: ai automation, workflow automation, batch processing, ai pipeline, automated content, scheduled ai, ai cron, ai batch job, automated generation, ai workflow, content at scale, automation script, ai orchestration
databricks-apps-python
databricks-solutions/ai-dev-kit
Builds Databricks applications. Prefers AppKit (TypeScript + React SDK) for new apps; falls back to Python frameworks (Dash, Streamlit, Gradio, Flask, FastAPI, Reflex) when Python is required. Handles OAuth authorization, app resources, SQL warehouse and Lakebase connectivity, model serving, foundation model APIs, and deployment. Use when building web apps, dashboards, ML demos, or REST APIs for Databricks, or when the user mentions AppKit, Streamlit, Dash, Gradio, Flask, FastAPI, Reflex, or Databricks app.
n8n-expression-syntax
webcomunicasolutions/claude-code-toolkit
Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.
n8n-expression-syntax
reachmeshailesh-boop/codex-skill-pack
Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.
supabase
hoangsoft90/ai_skills
Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies, getSession, getUser, getClaims, RLS); Supabase CLI or MCP server; schema changes, migrations, declarative schemas, security audits, Postgres extensions (pg_graphql, pg_cron, pg_vector).
supabase
tanuj0071/opencode-skills
Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies, getSession, getUser, getClaims, RLS); Supabase CLI or MCP server; schema changes, migrations, security audits, Postgres extensions (pg_graphql, pg_cron, pg_vector).
dotnet-grpc
managedcode/dotnet-skills
Build or review gRPC services and clients in .NET with correct contract-first design, streaming behavior, transport assumptions, and backend service integration.
openapi-tool-scaffold
kjaylee/misskim-skills
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orpc-docs
wenerme/ai
Use when working with oRPC (OpenAPI Remote Procedure Call): defining type-safe RPC procedures, routers, middleware, context, error handling, event iterators (streaming), file upload/download, contract-first design, OpenAPI spec generation, server adapters (Next.js, Hono, Express, Fastify, Nuxt, Astro, Elysia, H3, SvelteKit, Remix, TanStack Start, Solid Start, WebSocket, Electron, Web Workers), client-side usage (RPC link, OpenAPI link, dynamic link), plugins (CORS, batch requests, compression, retry, CSRF, rate limit), integrations (TanStack Query, AI SDK, Better Auth, Sentry, OpenTelemetry, Pinia Colada, SWR), or migrating from tRPC.
stripe-integration
jarmen423/skills
Get paid from day one. Payments, subscriptions, billing portal, webhooks, metered billing, Stripe Connect. The complete guide to implementing Stripe correctly, including all the edge cases that will bite you at 3am. This isn't just API calls - it's the full payment system: handling failures, managing subscriptions, dealing with dunning, and keeping revenue flowing. Use when: stripe, payments, subscription, billing, checkout.
bk-cli-apigateway
tencentblueking/bk-cli
当需要通过 `bk-cli apigateway` 发现 BlueKing API Gateway 中所有公开网关、浏览某个网关公开的 API/资源列表、获取 OpenAPI/Schema、判断某个接口该怎么调用，或在 `apigateway` 子命令与 `bk-cli api` 之间做选择时使用。尤其是当用户还不知道或不确定该调用哪个网关、哪个公开接口、接口名可能是什么、只知道业务目标/关键词/资源名片段时，也应优先使用这个 skill，先搜索再确认，而不是直接猜测接口。
openbat-settings
openbat-dev/agent-skills
Manage OpenBat chatbot settings, API keys (ingest/read/admin), webhooks, and custom metadata fields from the CLI or MCP.
openbat-workflows
openbat-dev/agent-skills
Create OpenBat workflows from a built-in DSL — e.g. fire a webhook when a user message is flagged or an assistant outcome matches a value. Triggers on workflow / webhook / trigger / DSL / xyflow questions in an OpenBat context.
api-design
1mangesh1/dev-skills-collection
REST API design patterns, structure, and best practices. Use when user asks to "design a REST API", "create API endpoints", "write OpenAPI spec", "design API routes", "add pagination to API", "version an API", "create API schema", "design webhook endpoints", "structure API responses", "implement HATEOAS", "design API errors", "API versioning", "API deprecation", "rate limiting design", or mentions REST API design, endpoint naming, HTTP methods, status codes, API best practices, request/response design, or API documentation.
api-design
johnqtcg/awesome-skills
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create-api-versioning
dykyi-roman/awesome-claude-code
Generates API Versioning pattern for PHP 8.4. Creates version resolution strategies (URI prefix, Accept header, query parameter), middleware, and deprecation support. Includes unit tests.
openapi-spec-generation
orangecapinnovative/skills
Generate and maintain OpenAPI 3.1 specifications from code, design-first specs, and validation patterns. Use when creating API documentation, generating SDKs, or ensuring API contract compliance.
create-rate-limiter
dykyi-roman/awesome-claude-code
Generates Rate Limiter pattern for PHP 8.4. Creates request throttling with token bucket, sliding window, and fixed window algorithms. Includes unit tests.
grpc-protobuf
1mangesh1/dev-skills-collection
gRPC and Protocol Buffers for service-to-service communication. Use when user mentions "grpc", "protobuf", "protocol buffers", ".proto", "grpcurl", "service definition", "RPC", "streaming", "buf", "protoc", or building gRPC services.
go-grpc
muratmirgun/gophers
Use when implementing or reviewing gRPC servers/clients in Go. Covers .proto organisation, code generation with protoc/buf, server bootstrap (interceptors, health, graceful shutdown), client patterns (reuse, deadlines, retries), status.Code error handling, streaming, TLS/mTLS, and bufconn testing. Apply when writing .proto files, adding interceptors, or auditing a service for production readiness.
api-design-graphql
kentoshimizu/sw-agent-skills
GraphQL schema and resolver contract design for type boundaries, nullability, authz, and query-cost safety. Trigger when SDL, resolver behavior, field contracts, or query safety controls are added/changed, and their contract impact is not yet explicitly specified. Do not use for REST/OpenAPI endpoint design, API version lifecycle governance, or standalone error taxonomy design.
rest-api-patterns
microsoft/semantic-link-labs
Guide for implementing REST API wrapper functions. Use this when adding new API wrappers or troubleshooting API calls.
zerobus-ingest
databricks-solutions/ai-dev-kit
Build Zerobus Ingest clients for near real-time data ingestion into Databricks Delta tables via gRPC. Use when creating producers that write directly to Unity Catalog tables without a message bus, working with the Zerobus Ingest SDK in Python/Java/Go/TypeScript/Rust, generating Protobuf schemas from UC tables, or implementing stream-based ingestion with ACK handling and retry logic.
managed-memory
databricks/app-templates
Give an agent durable, cross-session long-term memory using Databricks MANAGED memory (the Unity Catalog memory-store REST APIs) as tools — governed by UC with no infra the customer needs to run. This works for either OpenAI Agents SDK or LangGraph templates. Use when: the agent should remember a user's (or a team/org's shared) preferences/facts/decisions across conversations; keywords 'long-term memory', 'managed memory', 'memory store', 'agentic memory'. This is separate from the self-hosted Lakebase memory solution with skills in (agent-openai-memory / agent-langgraph-memory).
golang-best-practices
koolamusic/claudefiles
Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration.
express
g1joshi/agent-skills
Express.js Node.js web framework for REST APIs and middleware. Use for Node.js backends.
django-expert
hainamchung/agent-assistant
Use when building Django web applications or REST APIs with Django REST Framework. Invoke for Django models, ORM optimization, DRF serializers, viewsets, authentication with JWT.
backend-aspnet-core-dotnet-10
chrishuffman5/domain-expert
Version-specific expert for ASP.NET Core on .NET 10 LTS (Nov 2025 - Nov 2028). Covers OpenAPI 3.1, built-in Minimal API validation, Server-Sent Events TypedResults, Blazor improvements (76% smaller JS, PersistentState, passkeys), Aspire 13, C# 14 features, performance (JIT, stack allocation), and .NET 8 LTS migration guide. WHEN: \".NET 10\", \"net10.0\", \"dotnet 10\", \"OpenAPI 3.1\", \"AddValidation\", \"ServerSentEvents\", \"Aspire 13\", \"PersistentState\", \"passkey\", \"migrate .NET 8 to .NET 10\", \"C# 14\".
rails-graphql-patterns
ag0os/rails-dev-plugin
Analyzes and recommends GraphQL patterns for Rails using graphql-ruby including schema design, types, resolvers, mutations, subscriptions, DataLoader, and query complexity. Use when building GraphQL APIs, defining types, writing mutations, optimizing N+1 queries, or structuring app/graphql. NOT for REST API controllers, ActiveRecord queries outside GraphQL, or Turbo Stream responses.
graphql-suite
annexare/graphql-suite
Build GraphQL APIs from Drizzle PostgreSQL schemas with auto-generated CRUD, type-safe clients, and React Query hooks. Use when creating GraphQL servers from Drizzle ORM tables, building type-safe GraphQL clients, adding React data-fetching hooks with TanStack Query, or generating GraphQL SDL/types from Drizzle schemas.
api-graphql-yoga
agents-inc/skills
GraphQL Yoga v5 server, Envelop plugins, subscriptions, error masking
golang-grpc
rockcookies/skills
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z-go-grpc
victorzhuk/skills
gRPC and protobuf service design in Go — field evolution, deadline propagation, the status-code/errdetails error model, interceptor ordering, streaming vs unary, and buf as the schema toolchain. Use when evolving a .proto service or setting up buf lint/breaking. Triggers on "protobuf", "buf lint", "buf breaking", "grpc interceptor", "status.Error", "errdetails". Does not cover context, errors, or API semantics; see [[z-go-context]], [[z-go-errors]], [[z-go-api-design]].
lark-openapi-explorer
bubbmon233/cli
飞书/Lark 原生 OpenAPI 探索：从官方文档库中挖掘未经 CLI 封装的原生 OpenAPI 接口。当用户的需求无法被现有 lark-* skill 或 lark-cli 已注册命令满足，需要查找并调用原生飞书 OpenAPI 时使用。
sales-admailr
sales-skills/sales
Admailr platform help — programmatic email ad server for newsletter publishers with automated ad insertion, campaign management REST API, CPM+CPC revenue model, and ESP integrations. Use when you want to monetize your newsletter with automated display or native ads, Admailr ads aren't rendering correctly in dark mode or across email clients, campaign API calls are returning errors or banners aren't uploading, ad revenue is too low and fill rates are poor, trying to decide between Admailr and alternatives like Paved or Jeeng for programmatic newsletter ads, or need help integrating Admailr ad tags into your ESP template. Do NOT use for general newsletter monetization strategy (use /sales-newsletter) or newsletter sponsorship marketplace transactions (use /sales-paved or /sales-hecto).
payments-stripe
param087/saas-starter-skills
Use when integrating Stripe — set up Checkout for subscriptions, verify webhooks with the signing secret, handle events idempotently, and keep your database in sync with Stripe as the source of truth for billing state.
stripe-integration
aisa-group/skill-inject
Implement Stripe payment processing for robust, PCI-compliant payment flows including checkout, subscriptions, and webhooks. Use when integrating Stripe payments, building subscription systems, or implementing secure checkout flows.
api-rest-design
jonathan0823/opencode-config
RESTful API design patterns, versioning, and best practices
versioning
ivantorresedge/molcajete.ai
Version bump conventions and changelog update rules for the m plugin
rate-limiting
fullstack-phoenix/saas_kit
Use when the app needs to throttle requests or failed logins by IP or email. Covers installing Hammer + RemoteIp, the MyApp.RateLimit helpers, and how to tweak limits.
grpc
ffsshhttiikk/opencode-agents-skills
gRPC framework best practices and implementation
trello
firecrawl/openclaw
Manage Trello boards, lists, and cards via the Trello REST API.
n8n-expression-syntax
leadgenjay/claude-skills
Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.
supabase
daviddwlee84/agent-skills
Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies, getSession, getUser, getClaims, RLS); Supabase CLI or MCP server; schema changes, migrations, security audits, Postgres extensions (pg_graphql, pg_cron, pg_vector).
firebase-data-connect
kinnekate-hub/agent-skills
Build and deploy Firebase Data Connect backends with PostgreSQL. Use for schema design, GraphQL queries/mutations, authorization, and SDK generation for web, Android, iOS, and Flutter apps.
graphql
api-platform/skillset
Exposes API Platform resources over GraphQL — enabling GraphQL, Query/QueryCollection/Mutation/DeleteMutation operations, security expressions, custom resolvers, Relay cursor pagination, and nested relations. Use when the user mentions GraphQL, a GraphQL schema, queries/mutations, Relay connections, GraphQL playground, resolvers, or asks to expose existing REST resources via GraphQL.
graphql
automindtechnologie-jpg/ultimate-skill.md
GraphQL gives clients exactly the data they need - no more, no less. One endpoint, typed schema, introspection. But the flexibility that makes it powerful also makes it dangerous. Without proper controls, clients can craft queries that bring down your server. This skill covers schema design, resolvers, DataLoader for N+1 prevention, federation for microservices, and client integration with Apollo/urql. Key insight: GraphQL is a contract. The schema is the API documentation. Design it carefully.
api-docs
api-platform/skillset
Customizes OpenAPI documentation for API Platform resources. Use whenever the user mentions OpenAPI/Swagger output, API docs, descriptions or examples on endpoints or properties, custom response documentation, hiding operations or resources from docs, or decorating the OpenAPI factory — even for small requests like 'document this field'.
axum-impl-openapi
impertio-studio/axum-claude-skill-package
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saleor-payments
orcaqubits/agentic-commerce-skills-plugins
Implement Saleor payment processing — transaction-based payment flow, payment Apps, sync webhook events, Stripe/Adyen patterns, and refunds. Use when building payment integrations.
stripe-payments
zef-computers/drivers
Implement Stripe payment acceptance: Payment Intents, Setup Intents, Payment Methods, Checkout Sessions, Payment Element, Payment Links, and webhooks. Use when: (1) Accepting one-time payments (cards, wallets, bank transfers, BNPL), (2) Saving payment methods for later, (3) Building checkout flows (hosted or embedded), (4) Implementing 3D Secure / SCA, (5) Creating no-code Payment Links, (6) Handling payment webhooks and error states. Triggers on: accept payments, payment intent, checkout session, payment element, payment link, setup intent, save card, stripe elements, 3D secure, SCA.
payment-integration
aia-11-hn-mib/mib-mockinterviewaibot
Implement payment integrations with SePay (Vietnamese payment gateway with VietQR, bank transfers, cards) and Polar (global SaaS monetization platform with subscriptions, usage-based billing, automated benefits). Use when integrating payment processing, implementing checkout flows, managing subscriptions, handling webhooks, processing bank transfers, generating QR codes, automating benefit delivery, or building billing systems. Supports authentication (API keys, OAuth2), product management, customer portals, tax compliance (Polar as MoR), and comprehensive SDK integrations (Node.js, PHP, Python, Go, Laravel, Next.js).
stripe-integration
automindtechnologie-jpg/ultimate-skill.md
Get paid from day one. Payments, subscriptions, billing portal, webhooks, metered billing, Stripe Connect. The complete guide to implementing Stripe correctly, including all the edge cases that will bite you at 3am. This isn't just API calls - it's the full payment system: handling failures, managing subscriptions, dealing with dunning, and keeping revenue flowing. Use when: stripe, payments, subscription, billing, checkout.