250 free skills · page 4 of 5
API Design skills
Skills for designing APIs — REST conventions, GraphQL schema design, versioning strategy, rate limiting, and OpenAPI contracts.
Real files from public repositories — hand-curated, never invented. Sorted by installs.
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vtex-io-graphql-apivtex/skillsApply when working with GraphQL schema files in graphql/ or implementing resolvers in node/resolvers/ for VTEX IO apps. Covers schema.graphql definitions, @cacheControl and @auth directives, custom type definitions, and resolver registration in the Service class. Use for exposing data through GraphQL queries and mutations with proper cache control and authentication enforcement.API Design875
fusion-help-apiequinor/fusion-skillsGuides developers and admins through direct interaction with the Fusion Help REST API — reading articles, FAQs, release notes, searching content, and managing help documentation programmatically. USE FOR: fetch help articles from API, integrate help content in app, search help content, manage help documentation via API, automate help content, build help tooling. DO NOT USE FOR: using the fhelp CLI tool (use fusion-help-docs skill), modifying Fusion.Services.Help backend code, or non-help-API tasks.API Design840fusion-help-integrationequinor/fusion-skillsWires Fusion Help Center into app pages — creates article slug constants, adds useHelpCenter hook, and connects PageLayout props so users can open contextual help articles. USE FOR: add help button to page, wire useHelpCenter, create helpArticles constants, integrate Fusion Help in app, connect PageLayout to help center, add openHelpArticle to page. DO NOT USE FOR: authoring markdown help articles (use fusion-help-docs), direct Help REST API calls (use fusion-help-api), modifying @fra/ui shared components.API Design834
alchemy-apialchemyplatform/skillsWire Alchemy into application code (server, backend, dApp, script) using a standard API key. Preferred app-integration path for normal server/backend usage. Covers EVM JSON-RPC, Token API, NFT API, Transfers API, Prices API, Portfolio API, Simulation, Webhooks, Solana RPC, Solana DAS, Solana Yellowstone gRPC, Sui gRPC, Wallets/Account Kit, and operational topics. Requires $ALCHEMY_API_KEY. For live agent work in this session (querying, admin, local automation), use alchemy-cli (preferred) or alchemy-mcp instead. For app code without an API key (autonomous agent paying per-request, or explicit x402/MPP), use agentic-gateway instead.API Design821
setup-webhookvapiai/skillsConfigure Vapi server URLs and webhooks to receive real-time call events, transcripts, tool calls, and end-of-call reports. Use when setting up webhook endpoints, building tool servers, or integrating Vapi events into your application.API Design811
planetscale-readonly-inventoryplanetscale/skillsCollect read-only evidence about PlanetScale org, database, branches, webhooks, backups, roles, Insights, recommendations, and traffic configuration.API Design810
dodo-best-practicesdodopayments/skillsGuide for initial Dodo Payments setup, including SDK installation, test and live environments, API keys, and the canonical checkout-to-webhook architecture.API Design808planetscale-webhook-automation-recommendationsplanetscale/skillsRecommend webhook subscriptions and safe automation patterns for PlanetScale alerts, anomalies, schema recommendations, deploy requests, and agent workflows.API Design806planetscale-vitess-safety-reviewplanetscale/skillsReview a PlanetScale Vitess database for safe migrations, deploy requests, schema recommendations, Insights, webhooks, and operational safety.API Design803
docyrus-api-devdocyrus/agent-skillsDevelop applications using the Docyrus API with @docyrus/api-client and @docyrus/signin libraries. Use when building apps that authenticate with Docyrus OAuth2 (PKCE, iframe, client credentials, device code), make REST API calls to Docyrus data source endpoints, construct query payloads with filters, aggregations, formulas, pivots, and child queries, or integrate with external connectors (discover connectors, send requests through provider auth, run actions). Triggers on tasks involving Docyrus API integration, @docyrus/api-client usage, @docyrus/signin authentication, data source query building, Docyrus REST endpoint consumption, connector discovery, or external provider requests.API Design782docyrus-cli-appdocyrus/agent-skillsUse the Docyrus CLI (docyrus) to interact with the Docyrus platform from the terminal. Use when the user asks to authenticate, list apps, query or manage data records (ds), manage dev app data source schema objects (studio) including data sources, fields, enums, data views, forms, webforms, HTML/PDF export templates, and email templates, manage automations and their triggers/action nodes (automation), build or edit custom AI agents and their sub-resources (agent), set an app's AI agent context or manage app-scoped AI tools (apps), list tenant email accounts and send emails (messaging), manage tenant account settings — brands, the current user's profile, and tenant regional/formatting preferences (account), discover and call connectors (connect), send API requests, switch tenants/accounts, discover tenant OpenAPI specs, drive browser automation (browser), chat with platform agents (docy), launch the pi cowork/coding agents (opsy/cody/coder), run the agent bridge server (server), manage the repo knowledge graph (knowledge) and project plan (project-plan), cut releases (release), or use the terminal UI via docyrus tui. Triggers on docyrus ds list, docyrus ds comments, docyrus ds files upload, docyrus studio, docyrus studio search-fields, docyrus automation, docyrus automation create-node, docyrus agent, docyrus apps create, docyrus apps set-agent-context, docyrus apps ai-tools, docyrus messaging email send, docyrus account brands, docyrus account user-profile, docyrus account tenant-preferences, docyrus connect, docyrus discover, docyrus auth, docyrus browser, docyrus knowledge, docyrus project-plan, docyrus release, docyrus server, docyrus tui, or any terminal-based Docyrus workflow.API Design734
api-design-revieweralirezarezvani/claude-skillsComprehensive REST API design review with automated linting, breaking-change detection, and design scorecards. Catches inconsistent conventions, missing versioning, and design smells before APIs ship. Use when reviewing a PR that adds or changes API endpoints, auditing an existing API for v2 migration, or establishing API standards for a team.API Design713marketplace-rate-limitingvtex/skillsApply when implementing retry logic, rate limit handling, or resilience patterns in VTEX API integrations. Covers VTEX rate limit headers (X-RateLimit-Remaining, X-RateLimit-Reset, Retry-After), 429 status handling, exponential backoff with jitter, circuit breaker patterns, and request queuing. Use for any VTEX marketplace integration that must gracefully handle API throttling and maintain high availability.API Design693
social-media-trends-researchdrshailesh88/integrated_content_osProgrammatic social media and marketing research using free tools: pytrends (Google Trends), yars (Reddit without API keys), and Perplexity MCP (Twitter/TikTok/Web). Use when finding trending topics in a niche, tracking keyword velocity and volume, monitoring Reddit discussions, discovering what's going viral, or researching content opportunities before writing. Zero-cost research stack with built-in rate limiting. Complements content-marketing-social-listening skill with executable code.API Design680
openapi-specification-v3.2hairyf/skillsOpenAPI Specification 3.2 — write and interpret OpenAPI descriptions (OAD), paths, operations, parameters, request/response, schema (JSON Schema 2020-12), security, and extensions. Use when authoring or validating OpenAPI 3.2 documents.API Design679
API Integration Specialistdavila7/claude-code-templatesExpert in integrating third-party APIs with proper authentication, error handling, rate limiting, and retry logic. Use when integrating REST APIs, GraphQL endpoints, webhooks, or external services. Specializes in OAuth flows, API key management, request/response transformation, and building robust API clients.API Design673
cost-exportruvnet/rufloExport cost-tracking telemetry in Prometheus textfile or webhook JSON formats — for external observability (Grafana, Datadog, custom dashboards)API Design664
api-designerzhaono1/agent-playbookREST and GraphQL API architect for designing robust, scalable APIs. Use when designing new APIs or improving existing ones.API Design662
grpc-developmentmindrally/skillsBest practices for building high-performance services with gRPC and Protocol Buffers. Use when designing RPC services, defining protobuf schemas, implementing streaming APIs, setting up gRPC interceptors, or building cross-language service communication.API Design661
openapicodewithmukesh/dotnet-claude-kitWith TypedResults, response metadata is inferred automatically:API Design635mcp-server-builderalirezarezvani/claude-skillsDesign and ship production-ready MCP (Model Context Protocol) servers from OpenAPI contracts instead of hand-written tool wrappers. Python and TypeScript support, schema validation, safe evolution. Use when exposing an existing API as an MCP server, building tool integrations for Claude or Codex or Cursor, or scaffolding an MCP project from scratch.API Design630
configuring-exportsceligo/aiConfigure Celigo export resources -- the data source step that fetches records from external systems. Use when creating or editing exports, choosing the right adaptor type for a target application, setting up delta/incremental syncs, webhooks, file transfers, or lookups.API Design628
cyrus-setup-githubcyrusagents/cyrusConfigure GitHub for Cyrus — gh CLI login and git config for PRs, with optional webhook setup to enable @mention responses in PR comments, automated rebases and merges, and auto-fixing based on CI failures (coming soon).API Design621graphqlmindrally/skillsExpert in GraphQL API development with type-safe patterns and optimizationAPI Design616
amc-run-video-calibrationnvidia/skillsCalibrate a new dataset from pre-recorded video files via the AutoMagicCalib REST API. Use when user has local MP4s and says 'calibrate my videos', 'run AMC on these videos', or similar. For RTSP/live streams, use amc-run-rtsp-calibration instead.API Design615
api-rate-limitingaj-geddes/useful-ai-promptsProtect APIs from abuse and manage traffic using various rate limiting algorithms with per-user, per-IP, and per-endpoint strategies.API Design610apollo-graphqlmindrally/skillsGuidelines for developing GraphQL APIs and React applications using Apollo Client for state management, data fetching, and cachingAPI Design609cyrus-setup-endpointcyrusagents/cyrusConfigure the public webhook endpoint for Cyrus — ngrok, Cloudflare Tunnel, or custom URL.API Design596graphql-developmentmindrally/skillsGraphQL development guidelines with type-safe clients, schema design, and integration with React and Next.js.API Design594
aws-serverless-edazxkane/aws-skillsAWS serverless and event-driven architecture expert based on Well-Architected Framework. Use when building serverless APIs, Lambda functions, REST APIs, microservices, or async workflows. Covers Lambda with TypeScript/Python, API Gateway (REST/HTTP), DynamoDB, Step Functions, EventBridge, SQS, SNS, and serverless patterns. Essential when user mentions serverless, Lambda, API Gateway, event-driven, async processing, queues, pub/sub, or wants to build scalable serverless applications with AWS best practices.API Design592
bfl-apiblack-forest-labs/skillsBFL FLUX API integration guide covering endpoints, async polling patterns, rate limiting, error handling, webhooks, and regional endpoints with Python and TypeScript code examples.API Design584
understand-figmaegonex-ai/understand-anythingAnalyze a Figma file via the Figma REST API and generate an interactive design knowledge graph (pages, screens, components, component sets, instances, design tokens) with a kind:"design" dashboard.API Design581
api-design-patternsasyrafhussin/agent-skillsRESTful API design, error handling, versioning, and best practices. Use when designing APIs, reviewing endpoints, implementing error responses, or setting up API structure. Triggers on "design API", "review API", "REST best practices", or "API patterns".API Design572openapi-specification-v2hairyf/skillsOpenAPI (Swagger) 2.0 specification for describing REST APIs. Use when writing, validating, or interpreting Swagger 2.0 specs, generating clients/docs, or working with path/operation/parameter/response/schema/security definitions.API Design568
agent-email-patternsagentmail-to/agentmail-skillsArchitecture patterns for AI agents that communicate over email -- why agents need dedicated inboxes rather than human email accounts, infrastructure/provider tradeoffs, one-inbox-per-agent, two-way conversation loops, human-in-the-loop drafts, WebSocket vs webhook event design, multi-agent topologies, OTP flows, and the threat model (prompt injection, webhook spoofing, credential exposure, data leakage). Use when designing how agents send, receive, and manage email conversations, evaluating whether an agent needs email, or choosing an email provider; do not use for AgentMail SDK method calls or basic send/receive implementation.API Design567
databricks-model-servingdatabricks/databricks-agent-skillsDatabricks Model Serving endpoint lifecycle and ops. Use when asked to: CRUD serving endpoints (CLI or MLflow Deployments client); configure traffic routing for A/B / canary deploys and zero-downtime version swaps; retrieve OpenAPI schemas; inspect logs, metrics, or permissions; manage AI Gateway rate limits; discover Foundation Model API endpoints at runtime; integrate endpoints into Databricks Apps; or stream from off-platform clients (Vercel AI SDK v6, standalone Node.js). NOT for: training, MLflow autologging, UC registration, custom PyFunc/ResponsesAgent authoring (databricks-ml-training); Knowledge Assistants/Supervisor Agents (databricks-agent-bricks); MLflow evaluation (databricks-mlflow-evaluation).API Design563
document-api-endpointgetsentry/skillsDocument and type a Sentry API endpoint. Write or fix @extend_schema decorators, specify response TypedDicts, type request parameters, correct type drift between the declared schema and the runtime response, and validate the generated spec. Use when asked to "document an endpoint", "add OpenAPI docs", "add/fix @extend_schema", "type an endpoint response", "fix the response type", "fix type drift", "reuse a response type", "split an overloaded endpoint", "specify the response schema", "add a TypedDict response", "migrate a legacy api-docs path", "fix a parameter type", or "make an endpoint public" / "promote an endpoint" (promotion is one section here).API Design555
gangtise-copilotdaymade/claude-code-skillsGangtise (岗底斯投研) OpenAPI skill suite installer and diagnostic tool. One-click install 19 official skills (data, research, utility), configure accessKey/secretAccessKey, run health diagnostics. Trigger when user mentions Gangtise, 岗底斯, any gangtise-* skill, credential setup, or reports errors like 'token is invalid' / '接口地址错误'.API Design552
zodsecondsky/claude-skillsTypeScript-first schema validation and type inference. Use for validating API requests/responses, form data, env vars, configs, defining type-safe schemas with runtime validation, transforming data, generating JSON Schema for OpenAPI/AI, or encountering missing validation errors, type inference issues, validation error handling problems. Zero dependencies, compact core (~5kb gzipped; zod/mini ~1.9kb).API Design550api-versioningcodewithmukesh/dotnet-claude-kitVersion from day one — Adding versioning later is painful. Start with a version in the URL even if you only have v1.; URL segment versioning is the default — /api/v1/orders is the most discoverable and cache-friendly strategy.; Never break existing versions — Add a new version for breaking changes.…API Design525
stripe-webhookshookdeck/webhook-skillsStripe ships official SDK helpers that verify the Stripe-Signature header (HMAC-SHA256 over timestamp.body) and parse the event in one call. Pass the raw request body — don't JSON.parse first.API Design525
roblox-securitysentinelcore/roblox-skillsUse when writing Roblox game scripts that handle player actions, currencies, stats, damage, or any RemoteEvent/RemoteFunction communication. Use when reviewing code for exploitable patterns, implementing anti-cheat logic, validating client requests on the server, or setting up rate limiting.API Design521
dingtalk-connectionxiaomingx/moltbot-connector-feishu-dingtalkBridge DingTalk outgoing webhook messages to Clawdbot Gateway and send replies back to DingTalk sessions. Use when setting up DingTalk as a messaging channel, troubleshooting webhook delivery, or running the local bridge service.API Design515
syncfusion-react-data-managersyncfusion/react-ui-components-skillsImplements Syncfusion DataManager for local/remote binding, CRUD, querying, caching, and middleware. Supports JsonAdaptor, ODataAdaptor, ODataV4Adaptor, UrlAdaptor, WebApiAdaptor, WebMethodAdaptor, RemoteSaveAdaptor, GraphQLAdaptor, CustomDataAdaptor, and CustomAdaptor. Covers Query class, filtering, sorting, paging, grouping, persistence, offline mode, caching, and error handling.API Design510grpc-service-developmentaj-geddes/useful-ai-promptsDevelop efficient gRPC services using Protocol Buffers for service definition, with support for unary calls, client streaming, server streaming, and bidirectional streaming patterns.API Design505
fastapi-microservices-developmentmanutej/luxor-claude-marketplaceComprehensive guide for building production-ready microservices with FastAPI including REST API patterns, async operations, dependency injection, and deployment strategiesAPI Design505
api-design-patternsbobmatnyc/claude-mpm-skillsComprehensive API design patterns covering REST, GraphQL, gRPC, versioning, authentication, and modern API best practicesAPI Design490
orvalorval-labs/orvalGenerate type-safe API clients, TanStack Query/SWR hooks, Zod schemas, MSW mocks, Hono server handlers, MCP servers, and SolidStart actions from OpenAPI specs using Orval. Covers all clients (React/Vue/Svelte/Solid/Angular Query, Fetch, Axios), custom HTTP mutators, authentication patterns, NDJSON streaming, programmatic API, and advanced configuration.API Design481rate-limiting-implementationaj-geddes/useful-ai-promptsImplement rate limiting and throttling mechanisms to protect your services from abuse, ensure fair resource allocation, and maintain system stability under load.API Design480webhook-developmentaj-geddes/useful-ai-promptsBuild reliable webhook systems with event delivery, signature verification, retry logic, and dead-letter handling for asynchronous integrations.API Design480expressjs-developmentmanutej/luxor-claude-marketplaceComprehensive Express.js development skill covering routing, middleware, request/response handling, error handling, and building production-ready REST APIsAPI Design460
pp-figmamvanhorn/printing-press-libraryEvery Figma endpoint, plus codegen-ready frame extracts, comments audit, orphans finder, tokens diff Trigger phrases: extract a figma frame for codegen, compact figma file context for AI, find unresolved figma comments, figma stale components, diff figma design tokens, figma file fingerprint for CI, replay figma webhook deliveries, where is this figma variable used, use figma, run figma-pp-cli.API Design460
neo4j-graphql-skillneo4j-contrib/neo4j-skillsBuild and configure a GraphQL API backed by Neo4j using @neo4j/graphql v7 (current) or v5 (LTS).API Design458api-changelog-versioningaj-geddes/useful-ai-promptsCreate comprehensive API changelogs that document changes, deprecations, breaking changes, and provide migration guides for API consumers.API Design451spring-boot-developmentmanutej/luxor-claude-marketplaceComprehensive Spring Boot development skill covering auto-configuration, dependency injection, REST APIs, Spring Data, security, and enterprise Java applicationsAPI Design450neo4j-aura-provisioning-skillneo4j-contrib/neo4j-skillsProvisions and manages Neo4j Aura instances via CLI (aura-cli v1.7+) or REST API.API Design446api-versioning-strategyaj-geddes/useful-ai-promptsComprehensive guide to API versioning approaches, deprecation strategies, backward compatibility techniques, and migration planning for REST APIs, GraphQL, and gRPC services.API Design445webhook-integrationaj-geddes/useful-ai-promptsImplement robust webhook systems for event-driven architectures, enabling real-time communication between services and third-party integrations.API Design434
ln-775-api-docs-generatorlevnikolaevich/claude-code-skillsConfigures Swagger/OpenAPI documentation for backend APIs. Use when adding interactive API docs to a project.API Design433
celery-expertmartinholovsky/claude-skills-generatorExpert Celery distributed task queue engineer specializing in async task processing, workflow orchestration, broker configuration (Redis/RabbitMQ), Celery Beat scheduling, and production monitoring. Deep expertise in task patterns (chains, groups, chords), retries, rate limiting, Flower monitoring, and security best practices. Use when designing distributed task systems, implementing background job processing, building workflow orchestration, or optimizing task queue performance.API Design424Other tasks
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