Backend and APIs skills

13,189 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

solana-dev

97

solana-foundation/solana-dev-skill

Skill Claude CodeCodex

Use when user asks to "build a Solana dapp", "write an Anchor program", "create a token", "debug Solana errors", "set up wallet connection", "test my Solana program", "fuzz my Solana program", "deploy to devnet", "send a v1 transaction", "support larger transactions", "fix maxSupportedTransactionVersion", or "explain…

not rated 581 +1 changed yesterday A Socket: passSnyk: passSkillSpector: warn 258 tokens original MIT

spider-king

98

aoyunyang/spider-king-skill

Skill Codex

Pure-web protocol reverse skill: turn hostile browser clients into browser-free Python collectors. Auto-judge intake and tool path: artifact-only when samples suffice; fresh web live-target needs sequential fingerprint-baseline then debugger-trace (default chrome-devtools then js-reverse; if DP is already required…

not rated 521 +4 changed 13d ago A 209 tokens original MIT

Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI

Skill Claude CodeCodex

Opinionated backend development standards for Node.js + Express + TypeScript microservices. Covers layered architecture, BaseController pattern, dependency injection, Prisma repositories, Zod validation, unifiedConfig, Sentry error tracking, async safety, and testing discipline.

not rated 511 +3 4mo ago A 54 tokens

add-plugin

100

worldliberty/agentpay-sdk

Skill Codex

Use this skill when the user wants to add, refactor, or generalize a agentpay integration like Bitrefill. Follow the shared plugin registration path under src/plugins, keep plugin-specific API or scraping code under src/lib/ or src/lib/ /, reuse the existing Rust daemon signing and policy path through the shared CLI…

not rated 461 3d ago A SkillSpector: pass 97 tokens original MIT

api2cli

101

alexknowshtml/api2cli

Skill Claude CodeCodex needs its repo

Generate a working CLI from any API, then wrap it in a Claude Code skill. Point it at API docs, a live URL, or a peek-api capture and get a dual-mode Commander.js CLI (human + agent output) plus a ready-to-use skill folder. Use when user wants to wrap an API in a CLI, generate a CLI from API docs, turn an API into a…

not rated 454 8mo ago A 101 tokens original MIT

accounted-api

102

erp-mafia/accounted

Skill Claude CodeCodex

Consume the Accounted REST API (Swedish double-entry bookkeeping SaaS, https://app.gnubok.se/api/v1). Use when building an integration, app, backend job, or agent tool layer against Accounted: invoices, customers, suppliers, supplier invoices, journal entries (bokföring), bank transactions and reconciliation, payroll…

not rated 450 +20 changed 25d ago A 123 tokens

notion

103

Arvo-AI/aurora

Skill Claude Code

Notion workspace integration for searching pages, managing databases, creating postmortems, and exporting RCA findings.

not rated 446 +4 today A SkillSpector: pass 23 tokens original Apache-2.0

api-debugging

104

ownpilot/OwnPilot

Skill Claude Code

Systematic approach to debugging REST APIs, HTTP errors, authentication issues, and network problems. Use when the user has API errors, status code issues, timeout problems, or needs help troubleshooting HTTP requests.

not rated 429 +1 1mo ago A SkillSpector: pass 44 tokens original MIT

linejs

105

evex-dev/linejs

Skill Claude CodeCodex

Helps a coding agent build LINE bots / clients with the @evex/linejs library — JSR package, Deno-first, runs on Node/Bun too. Use when the user asks to write LINE bots, automate LINE accounts, work with LINE Thrift APIs, or wrap the AI "Agent I" feature.

not rated 419 +5 19d ago A SkillSpector: pass 71 tokens original MIT

add-entity

106

SSWConsulting/SSW.VerticalSliceArchitecture

Skill Claude Code

Scaffold a new domain entity or aggregate in this Vertical Slice Architecture template — the entity itself, its strongly typed ID, errors, specification, EF Core configuration, DbSet, the mandatory Vogen registration, and the migration. Use when the user says "add an entity", "add an aggregate", "create a domain…

not rated 413 +3 yesterday A SkillSpector: warn 116 tokens original MIT

Microck/ordinary-claude-skills

Skill Claude CodeCodex

Comprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues…

not rated 408 +1 1mo ago A 153 tokens

resend-cli

108

resend/resend-cli

Skill Claude CodeCodex needs its repo

Operate the Resend platform from the terminal — send emails (including React Email .tsx templates via --react-email), manage domains, contacts, broadcasts, templates, webhooks, API keys, logs, automations, and events via the resend CLI. Use when the user wants to run Resend commands in the shell, scripts, or CI/CD…

not rated 406 changed today A Socket: passSnyk: warnSkillSpector: pass 114 tokens original MIT

memmesh-sdk

109

ThinkfleetAI/memmesh

Skill Claude CodeCodex

MemMesh TypeScript SDK reference (@thinkfleet/memory-sdk) for the hosted platform at app.memmesh.ai. Covers the ThinkFleetMemory client — observe / search / list, the predict + lattice prediction surface, closed-loop learning (recordDecision / recordOutcome), emergent behavior discovery, and the health / financial…

not rated 405 +2 2mo ago A SkillSpector: pass 176 tokens original Apache-2.0

api-gateway

110

CraftOS-dev/CraftBot

Skill Claude CodeCodex

Connect to 100+ APIs (Google Workspace, Microsoft 365, Notion, Slack, Airtable, HubSpot, etc.) with managed OAuth. Use this skill when users want to interact with external services. Security: The MATONAPIKEY authenticates with Maton.ai but grants NO access to third-party services by itself. Each service requires…

not rated 401 +2 today A SkillSpector: warn 108 tokens original MIT

claude-api

111

JrCx7scC/claude-code-source

Skill Claude CodeCodex

This skill helps you build LLM-powered applications with Claude. Choose the right surface based on your needs, detect the project language, then read the relevant language-specific documentation.

not rated 375 +1 6mo ago A 0 tokens

wechatpay-apiv3/wechatpay-skills

Skill Claude CodeCodex needs its repo

A Chinese-language guide for WeChat Pay, Tencent's payment service, covering product selection, integration, troubleshooting, and payment operations.

not rated 373 +3 changed 15d ago A Socket: passSnyk: warnSkillSpector: pass 330 tokens original MIT

lishuangqiang/backend-agent-resume-scout

Skill Codex

Find suitable traditional software backend or business-grade AI agent projects from GitHub for students or early-career engineers, evaluate resume value, and generate a Markdown resume-writing package. Use when a user asks to choose backend projects, Java/Spring projects, distributed-system projects, complete AI agent…

not rated 366 +5 4mo ago A SkillSpector: pass 168 tokens original Apache-2.0

wangmarket-dev

114

xnx3/wangmarket

Skill Claude CodeCodex

A project-specific guide for developing and maintaining wangmarket, a Chinese e-commerce platform, or projects with the same folder structure. It covers installation, running the project, templates, plugins, JSP/Spring Boot changes, and troubleshooting.

not rated 352 +1 3d ago A 106 tokens

effect

115

kitlangton/skills

Skill Claude CodeCodex

Opinionated guide for building production TypeScript applications with Effect v4. Use when implementing Effect workflows, services, layers, schemas, configuration, schedules, caches, streams, HTTP clients, or tests.

not rated 352 changed 26d ago A Socket: passSnyk: passSkillSpector: pass 42 tokens original MIT

aws-samples/serverless-samples

Skill Claude CodeCodex ✓ vendor

Transform OpenAPI specifications (Swagger 2.0, OpenAPI 3.0, 3.1) into Amazon API Gateway-compatible REST APIs. Orchestrates transform, validate, optionally deploy via AWS SAM, E2E test against live endpoints, and report unsupported features. Use when converting OpenAPI to API Gateway, importing a Swagger/OpenAPI spec…

not rated 351 +1 3d ago A SkillSpector: warn 109 tokens MIT-0

afm

117

scouzi1966/maclocal-api

Skill Claude CodeCodex needs its repo

Maintain and extend AFM (maclocal-api), a Swift OpenAI-compatible local LLM server and CLI for Apple Foundation Models, MLX models, API gateway proxying, and Vision OCR. Use when working on AFM CLI commands (afm, afm mlx, afm vision), OpenAI /v1/chat/completions and /v1/models behavior, streaming SSE, tool-calling…

not rated 350 +2 3d ago A SkillSpector: pass 114 tokens original MIT

lap

118

Lap-Platform/LAP

Skill Claude Code

LAP CLI -- compile, search, and manage API specs for AI agents. Use when working with API specifications (OpenAPI, GraphQL, AsyncAPI, Protobuf, Postman), compiling specs to LAP format, searching the LAP registry, generating skills from API specs, or publishing APIs. Commands: init, compile, search, get, skill…

not rated 345 +1 3d ago A SkillSpector: warn 89 tokens original Apache-2.0

dr-jskill

119

jdubois/dr-jskill

Skill Claude CodeCodex

Creates Java + Spring Boot projects: Web applications, full-stack apps with Vue.js or Angular or React or vanilla JS, PostgreSQL, REST APIs, and Docker. Use when creating Spring Boot projects, setting up Java microservices, or building enterprise applications with the Spring Framework.

not rated 344 changed 1mo ago A 59 tokens original Apache-2.0

openapi-to-skills

120

neutree-ai/openapi-to-skills

Skill Claude CodeCodex

Generate an Agent Skill from an OpenAPI 3.x file or URL using the openapi-to-skills CLI. Use when asked to convert an API specification into a skill or create API reference docs for on-demand loading.

not rated 342 15d ago A 50 tokens original Apache-2.0

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: