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
Free · No signup · No trial clock
SEE THE DIRECTORY
api-versioning-strategy
mohitagw15856/pm-claude-skills
Write an API versioning strategy document for a service or API platform. Use when asked to define versioning policy, plan API deprecation, classify breaking changes, or document version lifecycle. Produces a complete versioning strategy with breaking-change classification table, deprecation timeline, migration guide template, and client communication template.
graphql
pluginagentmarketplace/custom-plugin-nodejs
Build GraphQL APIs with Node.js using Apollo Server, type definitions, resolvers, and real-time subscriptions
inspecting-jira-issues
sunfmin/inspecting-jira-issues
Use when starting work on a Jira ticket and you need full context — not just summary, but attachments (screenshots, mockups), comments (where repros usually live), linked issues, and custom fields. Use when `acli jira workitem view` returns a description that's just a media reference like `image-20260427-021811.png` and you can't see what the bug is. Use when an AI agent is about to guess at a bug from the summary or about to ask the user to paste a screenshot it could fetch itself. Use when authenticated curl against the Jira REST API returns 401, 403, or 406.
foundry-agent-sync
github/awesome-copilot
Create and synchronize prompt-based AI agents directly within Azure AI Foundry via REST API, from a local JSON manifest. Unlike scaffolding skills that only generate local code, this skill registers agents in the Foundry service itself — making them immediately available for invocation. Use when the user asks to create agents in Foundry, sync, deploy, register, or push agents to Foundry, update agent instructions, or scaffold the manifest and sync script for a new repository. Triggers: 'create agent in foundry', 'sync foundry agents', 'deploy agents to foundry', 'register agents in foundry', 'push agents', 'create foundry agent manifest', 'scaffold agent sync'.
graphql-resolver-creator
jeremylongshore/claude-code-plugins-plus-skills
Create graphql resolver creator operations. Auto-activating skill for
vendure-graphql-writing
meriley/claude-code-skills
Extend Vendure GraphQL schema with custom types, queries, mutations, and resolvers. Handles RequestContext threading, permissions, and dual Shop/Admin API separation. Use when adding GraphQL endpoints to Vendure.
grpc-service-generator
jeremylongshore/claude-code-plugins-plus-skills
Generate grpc service generator operations. Auto-activating skill for
litestar-openapi
alti3/litestar-skills
Configure Litestar OpenAPI schema generation and documentation UX with `OpenAPIConfig`, route-level schema metadata, schema generation controls, operation customization, UI render plugins, and documentation endpoint strategy. Use when API contract and docs quality must be implemented or corrected, especially for request, auth, and metrics surfaces. Do not use for runtime business logic changes unrelated to schema or documentation.
rest-api-expert
cin12211/orca-q
REST API design and development expert specializing in endpoint design, HTTP semantics, versioning, error handling, pagination, and OpenAPI documentation. Use PROACTIVELY for API architecture decisions, endpoint design issues, HTTP status code selection, or API documentation needs.
hashnode-api
rawveg/skillsforge-marketplace
Hashnode GraphQL API documentation for creating, managing, and querying blogs, posts, publications, and user data on the Hashnode platform
graphql
htlin222/dotfiles
Design GraphQL schemas, resolvers, and federation. Use for GraphQL API design or performance issues.
wp-headless-and-wpgraphql
jorgerosal/wordpress-skills
Headless WordPress and WPGraphQL review guidance. Use when reviewing decoupled WordPress architectures, WPGraphQL schema design, `register_graphql_field`, `register_graphql_connection`, `graphql_register_types`, Next.js/Gatsby/Remix frontends, preview mode, auth flows, persisted queries, or build/revalidation pipelines. Helps review schema boundaries, resolver performance, preview/auth correctness, cache invalidation, and content modeling decisions for headless WordPress stacks.
openapi-spec-generator
jeremylongshore/claude-code-plugins-plus-skills
|
stripe-integration
dadbodgeoff/drift
Complete Stripe payments integration with subscriptions, webhooks, and customer portal. Use when adding billing to a SaaS application with subscription tiers, usage-based pricing, or one-time payments.
indykite-authzen-search-subject
indykite/skills
List the subjects allowed to perform a given action on a resource via the IndyKite AuthZEN REST API (`POST /access/v1/search/subject`) - given a resource and an action, returns the matching subject instances of a type. Use to enumerate who has access - "who can provision gpu-node-7?", "list the people allowed to approve this document" (audit / reviewer views). Not for a specific-subject yes/no ("can grace provision gpu-node-7?" -> indykite-authzen-evaluation); to enumerate the other axes use indykite-authzen-search-action (which actions) or indykite-authzen-search-resource (which resources); to author the policy use indykite-authzen-kbac-policies.
openobserve-api
fcakyon/claude-codex-settings
This skill should be used when user asks to "query OpenObserve", "create OpenObserve dashboard", "edit OpenObserve panel", "fetch OpenObserve logs", "run OpenObserve search", "list OpenObserve streams", "ingest into OpenObserve", or works with OpenObserve Cloud / self-hosted via REST API. Covers auth, search/SQL, streams, dashboards (CRUD + per-panel ops), the v8 panel JSON schema, and known pitfalls (re-aggregation, hash concurrency, microsecond timestamps).
api-design-restful
autohandai/community-skills
RESTful API design patterns, error handling, and documentation
add-webhook
aiagentwithdhruv/skills
Add new Modal webhooks for event-driven execution. Use when user asks to create a webhook, add an endpoint, or set up event triggers.
webhooks
claude-dev-suite/claude-dev-suite
|
sentry-go-sdk
getsentry/sentry-for-claude
Full Sentry SDK setup for Go. Use when asked to "add Sentry to Go", "install sentry-go", "setup Sentry in Go", or configure error monitoring, tracing, logging, metrics, or crons for Go applications. Supports net/http, Gin, Echo, Fiber, FastHTTP, Iris, Negroni, and gRPC.
rust-web
full-stack-skills/rust-skills
Design, implement, test, and operate production Rust server-side HTTP services, including axum, Actix Web, routing, extractors, application state, error mapping, middleware order, timeouts, body limits, observability, graceful shutdown, and database boundaries. Use when users ask for Rust REST APIs, web handlers, middleware, server lifecycle, HTTP contracts, or production web-service architecture; hand security controls to rust-web-security.
paragraph-api
paragraph-xyz/skill
Use the Paragraph REST API or TypeScript SDK to manage posts, publications, subscribers, and coins on paragraph.com. No installation required — just HTTP requests or `npm install @paragraph-com/sdk`. Trigger when the user asks to integrate with, build on, or call the Paragraph API.
kv-store-grpc
letta-ai/skills
Guide for implementing gRPC-based key-value store services in Python. This skill should be used when building gRPC servers with protobuf definitions, implementing KV store operations (Get, Set, Delete), or troubleshooting gRPC service connectivity. Applicable to tasks involving grpcio, protobuf code generation, and background server processes.
api-docs
langchain-ai/skills-benchmarks
OpenAPI documentation and REST API design patterns
express-api
aidotnet/moyucode
生成Express.js REST API，包含TypeScript、中间件、验证、错误处理和认证模式。
express
full-stack-skills/nodejs-skills
Provides comprehensive guidance for Express.js framework including routing, middleware, request handling, templating, and API development. Use when the user asks about Express, needs to create Express applications, set up routes, implement middleware, or build REST APIs.
supabase-webhooks-events
jeremylongshore/claude-code-plugins-plus-skills
|
graphql-mutation-builder
jeremylongshore/claude-code-plugins-plus-skills
Build graphql mutation builder operations. Auto-activating skill for
graphql-subscription-setup
jeremylongshore/claude-code-plugins-plus-skills
|
steedos-graphql-api
steedos/steedos-platform
|
autoresearch-hooks
davebcn87/pi-autoresearch
Author pre/post-iteration hooks for an autoresearch session. Use when the user asks to add research fetching, Slack/webhook notifications, persistent learnings, auto-tagging, anti-thrash intervention, idea rotation, or any side effect around iterations.
language-spec-author
pproenca/dot-skills
Turn a rough idea for a language into a complete, implementable specification — a DSL, query, config/data, template, or protocol language — by interviewing the author dimension by dimension until another developer could build a conforming implementation from the document alone. It grills for the decisions authors skip: lexical rules (whitespace, case, comments, literals), grammar with precedence and ambiguity resolution, a semantic/type model, validation rules with counter-examples, execution algorithms and the error model, the output/serialization format, and RFC 2119 conformance. The completeness bar and formal notation (lexical vs syntactic grammar, function-style algorithms) are distilled from the GraphQL specification. Trigger on \"spec out my language\", \"design a DSL / query language\", \"write a language or grammar spec\", \"formalize this syntax\", or when someone has a language idea that needs to become an implementable spec — even if they only say \"spec\" or \"grammar\".
openapi-generator
claude-dev-suite/claude-dev-suite
|
archs4-database
jaechang-hits/sciagent-skills
Query ARCHS4 REST API for uniformly processed RNA-seq expression, tissue patterns, co-expression across 1M+ human/mouse samples. Retrieve z-scores, co-expressed genes, samples by metadata, HDF5 matrices. For variant population genetics use gnomad-database; for pathway enrichment use gget-genomic-databases (Enrichr).
building-graphql-server
jeremylongshore/claude-code-plugins-plus-skills
Build production-ready GraphQL servers with schema design, resolvers,
generating-grpc-services
jeremylongshore/claude-code-plugins-plus-skills
Generate gRPC service definitions, stubs, and implementations from Protocol
line-notification-message
abgne/line-dev
Reference for LINE Notification Messages — phone-number-based messaging to non-friends, template type (premade layouts) and flexible type (custom Flex Message), delivery completion webhooks, user consent flow, SMS authentication, and billing. Use when the user asks to "send a notification message via phone number", "hash a phone number for PNP", "handle delivery completion webhook", "set up template or flexible notification", "check notification message count", "integrate LON", or mentions LINE notification messages, LINE Official Notification (LON), PNP push, phone-number-based delivery, hashed phone number, notification template, delivery completion event, consent states, or SMS authentication for notifications. Always use this skill whenever the user mentions LINE notification messages, PNP, LON, LINE Official Notification, LINE 通知型訊息, or phone-based LINE messaging to non-friends, even if they don't explicitly say "notification message".
svix-sending-webhooks
svix/ai
>-
spring-graphql
claude-dev-suite/claude-dev-suite
|
graphql-performance
thebushidocollective/han
Use when optimizing GraphQL API performance with query complexity analysis, batching, caching strategies, depth limiting, monitoring, and database optimization.
microtech-graphql
microtech-gmbh/microtech-skills
>-
handle-linkedin-profile-view-signal
swan-gtm/gtm-skills
Use this skill when a profile-view webhook (e.g. LeadShark) fires for a new view on a team member's LinkedIn profile. It resolves the viewer's identity and company, applies dedup, internal, relationship, and ICP gates, and routes qualified viewers into the MQL pipeline — treating a profile view exactly like a website visit. The CRM is never polluted: only fully resolved, ICP-matched viewers reach a CRM write.
stripe-setup
forever-efficient/pitfal-solutions-website
Set up Stripe products, prices, and webhooks for Pitfal Solutions photography packages. Creates products for portrait sessions, event coverage, digital downloads, and prints. Use when configuring payment processing.
clinpgx-database
jaechang-hits/sciagent-skills
Query the ClinPGx (formerly PharmGKB) REST API plus the CPIC PostgREST companion API for pharmacogenomic clinical annotations, CPIC/DPWG dosing guidelines, gene-drug pairs, variant-drug associations, FDA/EMA drug labels, and PGx pathways. Two-host architecture: api.clinpgx.org for annotation records, api.cpicpgx.org for genotype→recommendation lookups. No auth. For germline pathogenicity use clinvar-database; for somatic cancer PGx use cosmic-database or opentargets-database; for drug bioactivity use chembl-database-bioactivity.
n8n-error-handling
n8n-io/skills
Use when building any webhook-triggered workflow, scheduled/production-bound workflow, wiring a per-node error output, or any workflow where silent failure would drop user-visible work. Triggers on "webhook", "respond to webhook", "API", "production", "error", "failure", "5xx", "try/catch", "error workflow", "onError", "continueErrorOutput", "error branch", "node error output", "output(1)", "main[1]", "scheduled", or any workflow that runs unattended.
graphql-inspector-audit
thebushidocollective/han
Use when auditing GraphQL operations for complexity metrics, depth analysis, directive usage, or query performance concerns.
api-versioning
yanko-belov/code-craft
Use when designing or modifying APIs. Use when adding breaking changes. Use when clients depend on API stability.
specsfy-specialist-redis
promovaweb/specsfy
Projetar e operar Redis para cache, filas, sessões, rate limiting, locks distribuídos, streams e dados efêmeros com limites e falhas explícitos. Use quando houver Redis ou clientes compatíveis (Valkey), TTLs, Lua, Cluster, Sentinel ou persistência RDB/AOF; não trate Redis como source of truth durável sem requisito explícito e evidência de RPO/RTO aceitável.
go-grpc
eduardo-sl/go-agent-skills
>
grpc
claude-dev-suite/claude-dev-suite
|
grok
simota/agent-skills
Designing regex, parsers, and DSLs for grammar authoring and ReDoS-safe regex. Not for REST APIs (Gateway) or DB schemas (Schema).
supabase-functions
adaptationio/skrillz
Supabase Edge Functions development and deployment using Deno runtime. Use when creating serverless functions, webhooks, API endpoints, or scheduled tasks.
linear-graphql-skill
holon-run/uxc
Operate Linear workspace issues, projects, and teams through Linear GraphQL API using UXC. Use when tasks require querying or creating issues, managing projects, or interacting with Linear workflow. Supports both Personal API Key and OAuth authentication.
bitquery-graphql-skill
holon-run/uxc
Use Bitquery GraphQL through UXC for onchain trades, transfers, token holder analysis, balances, and market structure queries across supported networks, with OAuth client_credentials authentication and query-first execution.
graphql-inspector-validate
thebushidocollective/han
Use when validating GraphQL operations/documents against a schema, checking query depth, complexity, or fragment usage.
stripe-sync-webhook
ashutoshpw/stripe-sync-engine
When the user wants to create webhook handlers for stripe-sync-engine. Also use when the user mentions "webhook endpoint," "processWebhook," "stripe webhook handler," "stripe events," or "real-time sync.
api-design
ashchupliak/dream-team
REST API design principles and patterns - use when designing new endpoints, creating DTOs, or planning API structure
data-client-graphql-setup
reactive/data-client
Set up @data-client/graphql for GraphQL APIs. Configures GQLEndpoint with auth and custom options. Use after data-client-setup detects GraphQL patterns.
adyen-webhooks
hookdeck/webhook-skills
>
databricks-app-python
databricks-solutions/ai-dev-kit
Builds Python-based Databricks applications using Dash, Streamlit, Gradio, Flask, FastAPI, or Reflex. Handles OAuth authorization (app and user auth), app resources, SQL warehouse and Lakebase connectivity, model serving integration, foundation model APIs, LLM integration, and deployment. Use when building Python web apps, dashboards, ML demos, or REST APIs for Databricks, or when the user mentions Streamlit, Dash, Gradio, Flask, FastAPI, Reflex, or Databricks app.