Backend and APIs skills

13,183 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

app-builder-sdk

25

holaboss-ai/holaOS

Skill Claude CodeCodex

Build a new holaOS app using @holaboss/app-builder-sdk (5 backend primitives + optional shadcn dashboard UI). The canonical path for vibe-coded apps — integration modules AND dashboard apps both live here.

not rated 11k +31 yesterday A SkillSpector: warn 47 tokens

pinchtab

26

pinchtab/pinchtab

Skill Codex

Use this skill when a task needs browser automation through PinchTab: open a website, inspect interactive elements, click through flows, fill out forms, scrape page text, reuse a dedicated automation profile with user approval, export screenshots or PDFs, manage multiple browser instances, or fall back to the HTTP API…

not rated 10k +37 changed 1mo ago A Socket: warnSnyk: warnSkillSpector: warn 94 tokens original MIT

webiny/webiny-js

Skill Claude CodeCodex

Creating Headless CMS content models via code using the ModelFactory pattern. Use this skill when the developer wants to create, modify, or understand content model definitions, define fields and validators, set up reference fields between models, configure field layouts (including nested layouts inside object or…

not rated 8.1k +3 changed 8d ago A SkillSpector: warn 313 tokens

deep-research

28

xerrors/Yuxi

Skill Claude CodeCodex

A method for organising research that uses several sources and needs fact checking. It breaks a broad question into smaller investigations, checks important claims and combines the results into a cited report.

not rated 7.5k +70 changed 3d ago A SkillSpector: pass 69 tokens original MIT

NVIDIA-NeMo/Guardrails

Skill Claude CodeCodex

Helps developers create a NeMo Guardrails configuration for an LLM application. Use when users want to build, scaffold, configure, test, or iterate on input, output, retrieval, dialog, execution, Colang, or catalog-based guardrails. Trigger keywords - create guardrails, build guardrails, scaffold config, write rails…

not rated 7.4k +39 today A SkillSpector: warn 101 tokens

orval

30

orval-labs/orval

Skill Claude CodeCodex needs its repo

Generate type-safe API clients, TanStack Query/SWR hooks, Zod schemas, MSW mocks, Hono server handlers, MCP servers, and SolidStart actions from OpenAPI specs using Orval. Covers all clients (React/Vue/Svelte/Solid/Angular Query, Fetch, Axios), custom HTTP mutators, authentication patterns, NDJSON streaming…

not rated 6.6k +6 today A Socket: passSnyk: passSkillSpector: warn 83 tokens original MIT

genkit-ai/genkit

Skill Claude CodeCodex needs its repo

Best practices for authoring Genkit tooling, including CLI commands and MCP server tools. Covers naming conventions, architectural patterns, and consistency guidelines.

not rated 6.6k +14 today A SkillSpector: pass 35 tokens original Apache-2.0

better-t-stack

32

AmanVarshney01/create-better-t-stack

Skill Claude CodeCodex

Create or extend an end-to-end type-safe TypeScript project with Better-T-Stack (create-better-t-stack). Use when the user wants to start, scaffold or bootstrap an app, API, fullstack project or monorepo with any of Next.js, TanStack Router or Start, React Router, Nuxt, Svelte, Solid, Astro, React Native, Hono…

not rated 5.8k +12 5d ago A 149 tokens original MIT

apollo-router

33

clidey/whodb

Skill Claude Code

Version-aware guide for configuring and running Apollo Router for federated GraphQL supergraphs. Generates correct YAML for both Router v1.x and v2.x. Use this skill when: (1) setting up Apollo Router to run a supergraph, (2) configuring routing, headers, or CORS, (3) implementing custom plugins (Rhai scripts or…

not rated 5.0k +4 today A 140 tokens original Apache-2.0

varlock

34

dmno-dev/varlock

Skill Claude CodeCodex needs its repo

Secure environment variable management with Varlock. Use when handling secrets, API keys, credentials, or any sensitive configuration. Ensures secrets are never exposed in terminal, logs, or LLM context. Provides guidance around integrating varlock into a project, reading/editing .env.schema and other .env files…

not rated 4.9k +41 changed 19d ago A Socket: passSnyk: passSkillSpector: warn 109 tokens original MIT

ardanlabs/service

Skill Claude CodeCodex

Enforce primitive-at-edges / strong-types-in-Business layering and the toBus/fromBusResponse/toDB converter pattern. Use when writing, editing, or auditing Go files under app/, business/domain/, or .../stores/db.

not rated 4.1k +1 4d ago A SkillSpector: pass 56 tokens original Apache-2.0

pinme-uniwebpay

36

glitternetwork/pinme

Skill Claude CodeCodex

Use when generating, modifying, or reviewing PinMe Worker (Cloudflare Worker TypeScript) code that accepts payments through UniwebPay — payment links, products/prices, checkout sessions, payment status reads, refunds, subscriptions, or handling UniwebPay webhooks with @uniwebpay/sdk in a PinMe project.

not rated 3.8k +3 1mo ago A SkillSpector: warn 71 tokens original MIT

easy-api-mcp

37

open-wa/wa-automate-nodejs

Skill Claude CodeCodex

Teaches AI agents how to connect to the open-wa hosted MCP surface via Easy API.

not rated 3.7k +5 today A SkillSpector: warn 23 tokens

aiming-lab/MetaClaw

Skill Claude CodeCodex

Use this skill when implementing any endpoint, form handler, CLI tool, or function that accepts external input. Validate and sanitize all untrusted data before processing — never assume input is safe.

not rated 3.5k +5 4mo ago A SkillSpector: pass 44 tokens original MIT

claude-api

39

oboard/claude-code-rev

Skill Claude CodeCodex

Use this skill when the user is building against Anthropic APIs or SDKs, including @anthropic-ai/sdk, anthropic, or Agent SDK integrations.

not rated 3.3k +1 2mo ago A SkillSpector: pass 0 tokens

butterbase

41

butterbase-ai/butterbase

Skill Claude CodeCodex

AI-native, open-source backend-as-a-service with a built-in Model Context Protocol server. Postgres, auth, storage, functions, AI gateway.

not rated 3.0k +1 changed 9d ago A 34 tokens original Apache-2.0

opensrc

42

vercel-labs/opensrc

Skill Claude Code ✓ vendor

Fetch dependency source code to give AI agents deeper implementation context. Use when the agent needs to understand how a library works internally, read source code for a package, fetch implementation details for a dependency, or explore how an npm/PyPI/crates.io package is built. Triggers include "fetch source for"…

not rated 3.0k +3 1mo ago A Socket: passSnyk: warnSkillSpector: pass 103 tokens original Apache-2.0

supabase

43

supabase/agent-skills

Skill Claude CodeCodex ✓ vendor

Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies…

not rated 2.9k +35 changed 1mo ago A Socket: passSnyk: warnSkillSpector: warn 185 tokens original MIT

build-teaql-app

44

teaql/teaql-agent-kit

Skill Codex

Build or change a TeaQL application in Java, Rust, Go, Swift, Python, C#/.NET, or TypeScript, including Kotlin/JVM applications that consume Java-generated libraries. Mandatory order: first draft and save a complete KSML model, then verify the client and evaluate that saved model, repair it through repeated evaluation…

not rated 2.8k +1 changed yesterday A SkillSpector: warn 112 tokens original MIT

absurd

45

earendil-works/absurd

Skill Claude CodeCodex

Debug and operate Absurd durable workflows with absurdctl. Use when working with Absurd queues, tasks, runs, events, retries, schema setup, or when a user wants to inspect, spawn, retry, cancel, or wake workflows.

not rated 2.5k +10 9d ago A SkillSpector: pass 51 tokens original Apache-2.0

chat-sdk

46

vercel/chat

Skill Claude CodeCodex ✓ vendor

Build multi-platform chat bots with Chat SDK (chat npm package). Use when developers want to scaffold a bot with create-chat-sdk, build a Slack, Teams, Google Chat, Discord, Telegram, GitHub, Linear, or WhatsApp bot, handle mentions, direct messages, subscribed threads, reactions, slash commands, cards, modals, files…

not rated 2.4k +9 changed 20d ago A Socket: passSnyk: passSkillSpector: warn 108 tokens original MIT

mcp2cli

47

knowsuchagency/mcp2cli

Skill Claude Code

Turn any MCP server, OpenAPI spec, or GraphQL endpoint into a CLI. Use this skill when the user wants to interact with an MCP server, OpenAPI/REST API, or GraphQL API via command line, discover available tools/endpoints, call API operations, or generate a new skill from an API. Triggers include "mcp2cli", "call this…

not rated 2.4k +3 changed today B Socket: passSnyk: warnSkillSpector: warn 126 tokens original MIT

dstack-prototyping

48

dstackai/dstack

Skill Claude CodeCodex

Use with the dstack skill for model-serving work when the image, serving command, resources, backend/fleet choice, or service behavior is not proven. Guides task-first prototyping on real hardware, choosing fleets/backends that can reuse idle instances and caches, checking vLLM/SGLang sources, and verifying the final…

not rated 2.3k +8 changed 29d ago A SkillSpector: warn 80 tokens original MPL-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: