Backend and APIs skills

13,224 tagged Backend and APIs, measured the same way as everything else here.

Browse within: LLM 148agents 118skills 114agent 86agentic-ai 86api 82azure 68antigravity 66ai-coding 64claude-code-plugin 62cursor 54cli 53cybersecurity 53javascript 52

gdarko/laravel-vue-starter

Skill Claude CodeCodex

Apply this skill whenever writing, reviewing, or refactoring Laravel PHP code. This includes creating or modifying controllers, models, migrations, form requests, policies, jobs, scheduled commands, service classes, and Eloquent queries. Triggers for N+1 and query performance issues, caching strategies, authorization…

not rated 145 7mo ago A 114 tokens

elixir-architect

170

maxim-ist/elixir-architect

Skill Claude CodeCodex

Use when designing or architecting Elixir/Phoenix applications, creating comprehensive project documentation, planning OTP supervision trees, defining domain models with Ash Framework, structuring multi-app projects with path-based dependencies, or preparing handoff documentation for Director/Implementor AI…

not rated 145 11mo ago A 57 tokens original MIT

dodo-reach/hermes-link-curator

Skill Claude CodeCodex needs its repo

Maintain and debug the link-curator web dashboard (port 8090). Separate process from the official Hermes dashboard.

not rated 145 +2 4mo ago A 28 tokens original MIT

api-design

172

selmakcby/claude-agents-skills

Skill Claude Code

Backend API design specialist. Use when building REST/GraphQL APIs, designing endpoints, data models, or backend architecture. Covers RESTful principles, HTTP semantics, error handling, versioning, and OWASP-aligned security.

not rated 145 +2 6mo ago A 48 tokens original MIT

mail-time

173

veliovgroup/mail-time

Skill Claude CodeCodex

Use when building, wiring, reviewing, or debugging MailTime and ostrio:mailer email queues for horizontally scaled Node.js, Bun, or Meteor apps. Trigger on MailTime, MongoQueue, RedisQueue, PostgresQueue, mailTimePreset, JoSk email scheduling, Redis Cluster / KeyDB Cluster / Valkey useHashTags, KeyDB…

not rated 143 changed 21d ago A SkillSpector: warn 195 tokens original BSD-3-Clause

nfeio-node-sdk

174

nfe/client-nodejs

Skill Claude CodeCodex

NFE.io Node.js SDK integration expert (package: nfe-io). MUST trigger when: code imports 'nfe-io' or references NfeClient; user mentions NFE.io, NFS-e, NF-e, CT-e, CF-e, CFe-SAT, nota fiscal, nota fiscal eletronica, Brazilian invoice, fiscal document, electronic invoice Brazil, CNPJ lookup, CPF lookup, service…

not rated 143 +2 changed 12d ago A 264 tokens original MIT

vinilana/invokta

Skill Codex

Add or change domain capabilities in this Invokta Action Engine with explicit contracts, authenticated access, engine-owned dependencies, migrations, and tests. Use when a user asks to add an action, tool, capability, domain behavior, repository operation, schema, or capability ID, or to expose behavior consistently…

not rated 142 4d ago A SkillSpector: pass 81 tokens original MIT

astrologer-api

177

g-battaglia/Astrologer-API

Skill Claude CodeCodex

Integrate the hosted Astrologer API through RapidAPI for SVG charts, astrology data, Moon phases, planetary hours and XML context. Use when writing or debugging clients for this service.

not rated 138 +1 changed 29d ago A 42 tokens AGPL-3.0

IgniteUI/igniteui-cli

Skill Claude Code

Identify and select the right Ignite UI Web Components for your app UI, then navigate to official docs, usage examples, and API references.

not rated 137 yesterday A SkillSpector: pass 34 tokens original MIT

pytdbot

179

pytdbot/client

Skill Claude CodeCodex

Write Telegram bots and userbots with Pytdbot (async TDLib wrapper with high-level helpers; not the Telegram Bot API). Use when the user works with Pytdbot, TDLib, or pytdbot.Client.

not rated 137 changed 1mo ago A SkillSpector: warn 49 tokens original MIT

aws-serverless-eda

180

CommandCodeAI/agent-skills

Skill Claude CodeCodex

AWS 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…

not rated 137 7mo ago A 112 tokens original MIT

latchkey

181

imbue-ai/latchkey

Skill Claude CodeCodex

Interact with third-party or self-hosted services (Slack, Google Workspace, Dropbox, GitHub, Linear, Coolify...) using their HTTP APIs on the user's behalf.

not rated 132 +1 yesterday A SkillSpector: warn 38 tokens original MIT

victorGPT/vibeusage

Skill Claude CodeCodex

Use when designing or reviewing a backend MVP with tight budget, evolving schema, and reliance on third-party backends where idempotency, replay, and responsibility attribution are high-risk.

not rated 130 3mo ago A SkillSpector: pass 43 tokens original MIT

django-patterns

183

deepelementlab/clawcode

Skill Claude CodeCodex

Django architecture patterns, REST API design with DRF, ORM best practices, caching, signals, middleware, and production-grade Django apps.

not rated 126 5mo ago A 32 tokens GPL-3.0

security-convex

184

IgorWarzocha/Opencode-Workflows

Skill OpenCode

Review Convex security audit patterns for authentication and authorization. Use for auditing query/mutation auth, row-level security, and validators. Use proactively when reviewing Convex apps (convex/ directory present). Examples: user: "Audit these Convex mutations" → check for missing ctx.auth and input validators…

not rated 122 8mo ago A 141 tokens archived

microservice-patterns

185

revfactory/claude-code-harness

Skill Claude Code

Event-driven microservice architecture patterns guide. Use when the user requests implementing microservices, event bus, SAGA pattern, orchestration, compensating transactions, or distributed system coordination.

not rated 121 7mo ago A 41 tokens

holon-run/uxc

Skill Codex

Operate Binance Spot market, account, and order APIs through UXC with a curated OpenAPI schema, Binance query signing, and separate mainnet/testnet link flows.

not rated 119 1mo ago A SkillSpector: pass 42 tokens original MIT

elixir-new-project

187

elixir-vibe/pi-elixir

Skill Claude CodeCodex

Create or bootstrap an Elixir/Phoenix project or package with Igniter and VibeKit. Use only for new-project generation or applying initial quality/tooling setup; use elixir for an existing backend project and elixir-web for existing UI/frontend work.

not rated 116 +2 1mo ago A 57 tokens

datapages-server

188

romshark/datapages

Skill Claude CodeCodex

Configure the Datapages server entry point: NewServer type arguments, the message broker, server options, static assets, TLS and Prometheus metrics.

not rated 116 changed 7d ago A 35 tokens original MIT

mcp-dart-server

189

leehack/mcp_dart

Skill Claude CodeCodex

Use when building or extending a Model Context Protocol (MCP) server in Dart with mcpdart: structuring the project, creating an McpServer, adding tools, resources, resource templates or prompts, returning tool results and errors, reporting progress, running over stdio, or testing the server.

not rated 116 3d ago A 68 tokens original MIT

vvip-educare

190

zhangdszq/teamclaw

Skill Claude CodeCodex

POST https://api.zoom.us/v2/users/me/meetings Authorization: Bearer {accesstoken}.

not rated 113 7mo ago A 0 tokens original Apache-2.0

javiarmesto/ALDC-AL-Development-Collection

Skill Claude Code

Agent SDK task integration patterns for Business Central. Triggers on: Agent Task Builder, Agent Task Message Builder, Public API, AssignTask, ExternalId, agent session detection, BindSubscription, TryFunction agent task, multi-turn agent conversation, agent attachment, task lifecycle management, OnPrem-only methods…

not rated 113 +2 changed 1mo ago A SkillSpector: pass 84 tokens original MIT

backend-patterns

192

hellangleZ/burn-in-cceverywhere-ralph

Skill Claude CodeCodex

Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.

not rated 112 9mo ago A 31 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: