Backend and APIs skills

12,535 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 124LLM 117skills 113agent 95azure 80agentic-ai 78api 72claude-code-plugin 59antigravity 56cli 52sdk 51nextjs 50claude-code-skills 49cybersecurity 46

whoamihappyhacking/lazycat-skills

Skill Claude CodeCodex

A guide to advanced networking for Lazycat MicroServer apps. It covers routing, multiple domains, TCP and UDP forwarding, cross-origin access, and complex proxy rules.

not rated 56 +1 12d ago A 57 tokens

Advance-Technologies-Foundation/clio

Skill Codex

Create, update, and validate custom Creatio Configuration Web Services and their tests. Use when users need to expose custom backend endpoints in Creatio, wire service contracts/implementations, return structured success/error results, or verify endpoints with integration-style and unit tests.

not rated 56 today A 58 tokens

widget-authoring

243

ThinkEx-OSS/thinkex

Skill Claude CodeCodex

Author or edit ThinkEx widgets, which are self-contained interactive HTML blocks inside documents. Use when the user explicitly asks for a widget, asks for interaction or live computation, or wants a document visual that ordinary blocks cannot express.

not rated 55 yesterday A SkillSpector: pass 49 tokens original MIT

create-mcp-tool

244

nickytonline/mcp-typescript-template

Skill Claude CodeCodex

Add a new MCP tool to this server template. Use when asked to "add a tool", "add an MCP tool", "create a new tool", or "implement a new tool".

not rated 55 +1 changed today A SkillSpector: pass 43 tokens original MIT

byok-relay

245

avikalpg/byok-relay

Skill Claude CodeCodex

OpenAI-compatible LLM gateway for any client-side application (browser, mobile, React Native, Flutter, VS Code extensions, browser extensions, Electron, smart TV, and more). Routes requests to OpenAI, Anthropic, Gemini, Groq, Mistral, and 200+ models, handling CORS, key encryption, and streaming without a dedicated…

not rated 54 yesterday A SkillSpector: warn 131 tokens original Apache-2.0

rails-upgrade

246

robzolkos/skill-rails-upgrade

Skill Claude CodeCodex

Analyze Rails application upgrade path. Checks current version, finds latest release, fetches upgrade notes and diffs, then performs selective upgrade preserving local customizations.

not rated 54 7mo ago A 35 tokens

fastapi

247

youlaitech/youlai-skills

Skill Claude CodeCodex

Development guidance for FastAPI, a Python framework for building backend web APIs. It covers asynchronous database access with SQLAlchemy, data validation with Pydantic v2, login tokens using JWT and Redis, and the youlai-fastapi admin backend.

not rated 54 +5 17d ago A 49 tokens

comfyui-gateway

248

hainamchung/agent-assistant

Skill Claude CodeCodex needs its repo

REST API gateway for ComfyUI servers. Workflow management, job queuing, webhooks, caching, auth, rate limiting, and image delivery (URL + base64).

not rated 54 3mo ago A 41 tokens original MIT

simple-clinical

249

langcare/langcare-mcp-fhir

Skill Claude CodeCodex

Structured clinical workflows using LangCare MCP FHIR Server's 4 generic tools: fhirsearch, fhirread, fhircreate, fhirupdate.

not rated 54 +1 4mo ago A 0 tokens original MIT

code-mode

250

paiml/rust-mcp-sdk

Skill Claude CodeCodex

Generate validated GraphQL queries against this server's schema.

not rated 53 yesterday A SkillSpector: pass 13 tokens original MIT

auth

251

henrydiaosi/AI-framework

Skill Claude CodeCodex

A guide to the authentication module in the AI-framework project. Authentication is the process of checking who a user is before allowing access.

not rated 53 5mo ago A 1 tokens

use-miller

252

darraghoriordan/use-miller

Skill Codex

Build, configure, provision, diagnose, verify, deploy, or extend an application created from the Miller starter. Use for projects containing miller.config.json, especially when creating an app, setting up production, configuring self-hosted Better Auth or Stripe, integrating either Next.js or an independent browser…

not rated 53 changed 4d ago A 93 tokens

django-celery-expert

253

wilfredinni/django-starter-template

Skill Claude CodeCodex

Expert Django Celery guidance for asynchronous task processing. Use when designing background tasks, configuring Celery workers, handling task retries and errors, optimizing Celery performance, implementing periodic tasks with Celery Beat, or setting up production monitoring for Celery. Do not use for general Django…

not rated 53 13d ago A SkillSpector: warn 115 tokens original MIT

net-route-mapper

254

RuoJi6/net-audit-skills

Skill Claude CodeCodex

A tool that maps HTTP routes and their parameters in .NET applications. It can inspect source code or decompiled files and save the results as a Markdown document.

not rated 53 +1 3mo ago A 158 tokens

convex-agent

255

get-convex/agent-skills

Skill Claude CodeCodex

Add an AI agent / RAG backend (@convex-dev/agent) to the Convex app.

not rated 53 +2 4d ago A Socket: passSnyk: passSkillSpector: pass 25 tokens original Apache-2.0

debug-wing

256

ehrlich-b/wingthing

Skill Claude Code

Diagnose wing connectivity issues. Checks auth, relay connection, daemon status, and identifies why a wing might not appear in the web UI.

not rated 53 +1 yesterday A SkillSpector: warn 31 tokens original MIT

fubon-trade-api

257

Kelu0427/fubon-tradeapi-ai-skill

Skill Claude CodeCodex

A coding guide for Fubon Neo, also called Fubon Securities TradeAPI, a Taiwanese brokerage API for market data, trading, accounts, and related workflows.

not rated 52 3mo ago A 108 tokens original MIT

backend-dev

258

julianromli/droid-factory-template

Skill Claude CodeCodex

Comprehensive backend development workflow that orchestrates expert analysis, architecture design, implementation, and deployment using the integrated toolset. Handles everything from API design and database architecture to security implementation and DevOps automation.

not rated 52 9mo ago A 43 tokens original MIT

scout

259

tester-army/scout

Skill Claude CodeCodex

Safely explore and adversarially test an authorized HTTP API using the scout CLI, with or without an OpenAPI spec. Use when asked to test, probe, validate, or explore an API, whether or not an OpenAPI/Swagger spec is available. Scout is the harness; you are the operator.

not rated 52 +1 yesterday A 65 tokens original MIT

objectstack-ai/objectstack

Skill Claude CodeCodex needs its repo

Design ObjectStack automation — Flows (visual logic), Triggers, Approvals, state machines, and the jobs (defineJob) / webhooks (defineWebhook) stack collections. Use when the user is adding .flow.ts, wiring an event-driven rule, modelling an approval chain, or building an interactive screen flow / wizard…

not rated 51 +3 changed today A SkillSpector: warn 129 tokens original Apache-2.0

clawpilot

263

kcchien/clawpilot

Skill Claude CodeCodex

Expert skill for OpenClaw (v2026.2.19) — self-hosted AI gateway connecting chat apps (WhatsApp, Telegram, Discord, Slack, iMessage, Signal, LINE, Matrix, Teams, Google Chat) to AI agents. Use when user asks about: installing/configuring/updating OpenClaw, setting up or troubleshooting chat channels, security hardening…

not rated 48 4mo ago A 187 tokens original MIT

toffyui/ccteams

Skill Claude CodeCodex

Operational playbook for FastAPI + Pydantic v2 async services — event-loop discipline, boundary validation, dependency lifetimes, responsemodel leaks, async ORM N+1s. Read in full at the start of every task on this team.

not rated 47 8d ago A SkillSpector: pass 56 tokens original MIT

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