Backend and APIs skills

12,617 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 160skills 141LLM 111agent 90azure 80agentic-ai 77api 71claude-code-plugin 61ai-coding-agent 58antigravity 54sdk 51nextjs 50claude-code-skills 49cli 48

fastapi-conventions

841

Cypsy1714/cchad

Skill Claude CodeCodex

FastAPI routing, dependency injection, and async patterns. Use when building or reviewing FastAPI backends.

not rated 1 2mo ago A 26 tokens original MIT

api-design

842

hautc-it/cil

Skill Claude CodeCodex

Use when designing or reviewing a public API surface — REST/GraphQL/gRPC, versioning, idempotency, error contracts, pagination, auth boundary. Helps choose between transport styles and avoid breaking-change footguns.

not rated 1 1mo ago A 47 tokens original MIT

platform-api

843

MakingChatbots/genesys-cloud-skills

Skill Claude Code

Queries the Genesys Cloud Platform API schema for endpoint details, permissions, parameters, and response formats. Use when user asks about Genesys Cloud API endpoints (e.g., "/api/v2/assistants/queues"), API documentation, API permissions, schemas, capabilities, or when implementing Genesys Cloud operations.

not rated 1 6mo ago A 65 tokens original MIT

edgesparkhq/codex-plugins

Skill Codex

Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.

not rated 1 4mo ago A 55 tokens original MIT

design-api

845

unperturbed-longislandsound997/skills

Skill Claude CodeCodex

Design an API end-to-end — from requirements to a validated OpenAPI spec. Generates stories for review, then produces a linted spec. Emmanuel Paraskakis's method for designing APIs with LLMs. Use when user says "/design-api" or asks to design an API.

not rated 1 today A 60 tokens copy · 89% MIT

mcp-openapi-proxy

846

rendis/mcp-openapi-proxy

Skill Codex needs its repo

Use when connecting a REST API to an MCP client, setting up mcp-openapi-proxy, exposing an OpenAPI-backed navigator/executor MCP server, or authenticating with OIDC/static tokens for API proxying.

not rated 1 4mo ago C 51 tokens original MIT

apex-plugin-patcher

848

ChiliJoe/apex-copilot-workspace-template

Skill Claude Code

Patch an Oracle APEX plugin's PL/SQL render/AJAX logic or its static JS/CSS files. Edits the human-readable source files, re-encodes hex blobs, and syncs the plugin installation SQL file — then optionally installs and validates via SQLcl MCP. TRIGGER when: user asks to fix, modify, or add behaviour to an APEX plugin…

not rated 1 5mo ago A 100 tokens

graphql-inspector

849

nano-step/graphql-inspector-mcp

Skill Claude CodeCodex

GraphQL schema inspection and query execution skill. Guides AI agents through progressive schema discovery — scan first, drill down second, execute last. Enforces read-only by default with token-efficient workflows.

not rated 1 3mo ago A 42 tokens

kleap

850

kleaphq/cli

Skill Claude CodeCodex

Build, edit and publish real websites with Kleap from inside this agent, via the Kleap MCP server. Use when the user wants to create a website or web app, change a site they made on Kleap, connect a domain, or take a site live — especially when they want it actually hosted and online, not just code. Kleap provides the…

not rated 1 1mo ago A 88 tokens original MIT

cqrs-pattern

851

agency-skills/agency-skills-b

Skill Claude CodeCodex

Implement Command Query Responsibility Segregation (CQRS) - Commands and Queries separation.

not rated 1 1mo ago A 20 tokens

yudao-pilot-mcp

852

chanshawoh/yudao-pilot-mcp

Skill Codex

A guide for using Yudao Pilot to generate application code from database tables in Yudao and related projects. Yudao is a software framework; generated code can include backend, frontend, CRUD screens, menus, dictionaries, and SQL when the project configuration supports them.

not rated 1 changed today A 118 tokens original MIT

omni-inference

853

alrcatraz/astra-aigate

Skill Claude CodeCodex

The core OpenAI-compatible inference endpoints: chat completions, embeddings, images, audio (TTS/STT), moderations, rerank, and the Responses API. The primary integration surface for AI agents.

not rated 1 today A 47 tokens original MIT

design-mcp-server

855

cyanheads/federal-reserve-mcp-server

Skill Claude CodeCodex

Design the tool surface, resources, and service layer for a new MCP server. Use when starting a new server, planning a major feature expansion, or when the user describes a domain/API they want to expose via MCP. Produces a design doc at docs/design.md that drives implementation.

not rated 1 22d ago A 62 tokens

encore-migrate

856

encoredev/cursor-plugin

Skill Claude CodeCodex

Migrate existing backend applications to Encore. Supports any source language/framework, targeting Encore.ts or Encore Go. Groups entities into migration units, creates a hierarchical plan, and migrates one unit at a time with validation.

not rated 1 5mo ago A 48 tokens

oidc-hosted-page-go

857

MojoAuth/skills

Skill Claude CodeCodex

Implement passwordless authentication in Go applications using MojoAuth OIDC Hosted Login Page.

not rated 1 6mo ago A 23 tokens

clawdirect-dev

858

napoleond/clawdirect

Skill Claude CodeCodex

Build agent-facing web experiences with ATXP-based authentication, following the ClawDirect pattern. Use this skill when building websites that AI agents interact with via MCP tools, implementing cookie-based agent auth, or creating agent skills for web apps. Provides templates using @longrun/turtle, Express, SQLite…

not rated 1 6mo ago A Socket: failSnyk: fail 69 tokens

remote-executor-core

859

skycaier/sky-windows-remote-executor

Skill Claude CodeCodex

A Windows service for running Python scripts and PowerShell commands on a remote computer through an HTTP API. It also manages files, settings, running tasks, and audit logs.

not rated 1 2mo ago A 37 tokens original MIT

urlsession-networking

860

almasumdev/awesome-ios-agent-skills

Skill Claude CodeCodex

Expert guidance on URLSession async APIs, retries, authentication, caching, request building, and background sessions. Use for any HTTP networking question.

not rated 1 4mo ago A 33 tokens

edgesparkhq/agent-skills

Skill Claude CodeCodex

Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.

not rated 1 4mo ago A Socket: passSnyk: pass 55 tokens copy · 97% MIT

wbrowser

862

matveikarpov64/Wbrowser

Skill Claude CodeCodex

Use when a task needs a browser that is already signed in — reading a dashboard, checking a web app, filling a form, taking a screenshot of a real page, or debugging a site's console. Drives a real Chrome window the user signed into by hand, so no re-login and no API keys. Do not guess selectors; run wb read first and…

not rated 1 +1 2d ago C 81 tokens copy · 100% MIT

graphql-for-mobile

864

almasumdev/awesome-mobile-backend-agent-skills

Skill Claude CodeCodex

GraphQL server design tuned for mobile -- persisted queries, batching, N+1 mitigation, and Apollo client integration. Use when building or reviewing a GraphQL API for mobile apps.

not rated 1 4mo ago A 40 tokens

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: