Backend and APIs skills

12,546 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 124LLM 117skills 113agent 96azure 80agentic-ai 78api 72claude-code-plugin 59antigravity 56cli 51sdk 51nextjs 50claude-code-skills 49cybersecurity 46

astro-strapi-starter

361

VirtusLab-Open-Source/astro-strapi-starter

Skill Claude CodeCodex

Develop and extend the Astro + Strapi starter: content.config with @sensinum/astro-strapi-loader, Strapi 5 data in Astro pages, StrapiBlocks, BlockRenderer, Tailwind 4, shadcn. Covers onboarding (copy upstream skills), slug/CMS routes, Astro i18n, package upgrades, optional Vitest. Types in src/types/strapi/ with a…

not rated 21 5d ago A SkillSpector: pass 90 tokens original MIT

jentic-api-scorecard

362

jentic/jentic-api-scorecard

Skill Claude CodeCodex

Use the @jentic/api-scorecard-cli to score an OpenAPI document against the Jentic API AI Readiness Framework (JAIRF). Use this skill whenever the user wants to score, grade, lint, or assess the AI-readiness / agent-readiness / quality of an OpenAPI (Swagger) spec — by local file or URL — or asks how to run the…

not rated 21 today A SkillSpector: warn 121 tokens original Apache-2.0

cockroachlabs/cockroachdb-skills

Skill Claude CodeCodex

Guides application developers in designing correct and performant transaction patterns for CockroachDB, covering transaction lifetime, implicit vs explicit transactions, retry handling with exponential backoff, pushing invariants into SQL, selective pessimistic locking, set-based operations, connection pooling…

not rated 21 1mo ago A 102 tokens original Apache-2.0

drupal-contribute-fix

364

scottfalconer/drupal-contribute-fix

Skill Claude CodeCodex

REQUIRED when user mentions a Drupal module + error/bug/issue - even without stack traces. Trigger on: (1) " module has an error/bug/issue", (2) "Acquia/Pantheon/Platform.sh" + module problem, (3) any contrib module name (metatag, webform, mcp, paragraphs, etc.) + problem description. Searches drupal.org BEFORE you…

not rated 21 6mo ago A 113 tokens

aws-samples/sample-agent-greenhouse

Skill Codex ✓ vendor

Build and deploy a small Slack Events API adapter for an Amazon Bedrock AgentCore Harness, with incremental responses delivered through Slack chat.startStream, chat.appendStream, and chat.stopStream. Use when a customer wants to create or reuse an AgentCore Harness, expose it as a Slack bot, stream InvokeHarness…

not rated 21 1mo ago A 142 tokens MIT-0

daloyjs/daloy

Skill Claude CodeCodex needs its repo

Build, test, and harden this DaloyJS REST API on Bun. Use when the user asks to add or change an endpoint, route, Zod/Standard Schema, middleware, error handling, OpenAPI spec, typed Hey API client, contract gate, auth, rate limit, background jobs, or security default. Also use for phrasing like "add GET /...", "new…

not rated 21 +1 today A SkillSpector: warn 120 tokens original MIT

RudyCity/superagent

Skill Claude CodeCodex

Master C#/.NET backend development patterns for building robust APIs, MCP servers, and enterprise applications. Covers async/await, dependency injection, Entity Framework Core, Dapper, configuration, caching, and testing with xUnit. Use when developing .NET backends, reviewing C# code, or designing API architectures.

not rated 21 +1 yesterday A SkillSpector: pass 70 tokens original MIT

odoo-integration

368

txampa/claude-skill-odoo-integration

Skill Claude CodeCodex

Use this skill when the user needs to connect to Odoo via XML-RPC, sync Odoo data to external systems (Google Sheets, databases, APIs), read or write Odoo models (stock.picking, sale.order, purchase.order, product.product, etc.), set up cron-based sync jobs, or deploy Odoo integrations on Railway/Render/Fly.io. Also…

not rated 20 5mo ago A 116 tokens original MIT

salvo-file-handling

369

salvo-rs/salvo-skills

Skill Claude CodeCodex

Handle file uploads (single/multiple), downloads, and multipart forms. Use for file management, image uploads, and content delivery.

not rated 20 2mo ago A 32 tokens

mcp-builder

370

blackzhuge/zhuge-workflow

Skill Claude CodeCodex

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

not rated 20 6mo ago A 61 tokens

bobmatnyc/mcp-skillset

Skill Claude CodeCodex

Production-grade FastAPI development with async patterns, Pydantic v2, dependency injection, ML/AI endpoint design, and modern Python best practices for building high-performance REST APIs.

not rated 20 6mo ago A 41 tokens original MIT archived

nodejs-project-arch

372

abczsl520/nodejs-project-arch

Skill Claude CodeCodex

Node.js project architecture standards for AI-assisted development. Enforces file splitting (<400 lines), config externalization, route modularization, and admin dashboards. Use when creating new Node.js projects, refactoring large single-file codebases, or when AI context window is being consumed by oversized files.…

not rated 20 5mo ago A 100 tokens original MIT

feature

373

pierreb-devkit/Node

Skill Claude Code

Use this whenever the user asks to "implement", "add", "build", "create", or "modify" a feature, endpoint, API, route, or module in this Node project. Three phases: Phase 0 scope analysis (flows + edge cases + plan validation, STOP for user), Phase 1 implementation (layered Routes → Controllers → Services →…

not rated 20 yesterday A 113 tokens

footprint

374

footprintjs/footPrint

Skill Claude CodeCodex

Use when building flowchart pipelines with footprintjs — stage functions, decider branches, selectors, subflows, loops, narrative traces, recorders, redaction, contracts, and LLM-ready output. Also use when someone asks how footprint.js works or wants to understand the library.

not rated 20 today A SkillSpector: warn 60 tokens original MIT

project-init

375

linshidream/skill-hub

Skill Claude CodeCodex

Initialize a Java Maven Spring Boot project scaffold into an empty directory (or add a new child module to an existing one). Generates parent/child POM, logback, layered application config (application.yml core + local/test/prod env files), README, docs/ skeleton, test skeleton, Dockerfile/build.sh/run.sh/rollback.sh…

not rated 20 +1 29d ago A SkillSpector: pass 263 tokens original MIT

webhook-docs-brief

376

bytebear7286-32ffw/webhook-docs-brief

Skill Claude CodeCodex

A guide for writing documentation for outbound webhooks, which are automatic messages a service sends to another system when an event occurs. It covers events, message data, signature checks, retries, duplicate handling, and examples.

not rated 20 1mo ago A 114 tokens original MIT

verify

379

windoze95/cantinarr

Skill Claude Code

Drive the Cantinarr Flutter app in a browser to verify UI changes at runtime — no backend required. Use when a change to app/lib needs visual/behavioral verification (layout, navigation, theming).

not rated 19 +2 today A 44 tokens AGPL-3.0

add-ai-provider

380

nikandr-surkov/ai-saas-starter

Skill Claude Code

Implement the image-generation provider interface for a new provider (fal, Replicate, direct OpenAI, ...). Use when swapping or adding an AI provider.

not rated 19 +3 1mo ago A 35 tokens original MIT

glue

381

guywaldman/glue

Skill Claude CodeCodex

Official Glue IDL guide for agents. Use when designing, writing, reviewing, validating, or generating code from Glue files and .gluerc config for TypeScript, Python, Rust, Go, OpenAPI, JSON Schema, or Protobuf.

not rated 18 5d ago A 52 tokens

powersync

382

powersync-ja/agent-skills

Skill Claude Code

Best practices for building and maintaining applications with PowerSync: Cloud and self-hosted setup, sync configuration, client SDK usage, backend integration (Supabase, custom Postgres, MongoDB, MySQL, MSSQL), schema changes, watch and reactive queries (useQuery), attachments, the upload queue, and debugging. Use…

not rated 18 changed today A Socket: passSnyk: failSkillSpector: pass 193 tokens original MIT

quicknode-skill

383

quiknode-labs/blockchain-skills

Skill Claude CodeCodex

Quicknode blockchain infrastructure for 80+ chains: Core RPC API, Streams, Webhooks, Blazar WSS, Solana gRPC, HyperCore gRPC, SQL Explorer, Metaplex DAS API, Blockbook, Ordinals & Runes API, Swap API, x402, MPP, Agent Subscriptions, CLI, and MCP. Use for any Quicknode product, blockchain data access, or wallet-paid…

not rated 18 27d ago B 93 tokens original MIT

Cheggin/minecraft-use

Skill Codex

Designs and builds Convex components with isolated tables, clear boundaries, and app-facing wrappers. Use this skill when creating a new Convex component, extracting reusable backend logic into a component, building a third-party integration that owns its own tables, packaging Convex functionality for reuse, or when…

not rated 18 4mo ago A 95 tokens GPL-3.0

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: