Backend and APIs skills

12,554 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 127LLM 114skills 112agent 96azure 80agentic-ai 72api 72antigravity 59claude-code-plugin 59ai-coding 54sdk 51claude-code-skills 49nextjs 49cli 47

kui-framework

121

abersheeran/kui

Skill Claude Code

Guide for building web applications with the Kui framework. Use when writing Kui ASGI/WSGI handlers, defining routes, binding parameters, configuring OpenAPI docs, or working with middleware/dependency injection.

not rated 297 5mo ago A 44 tokens original Apache-2.0

crud-automator

122

ElsiKora/NestJS-Crud-Automator

Skill Claude CodeCodex

Design, audit, document, refactor, and implement NestJS CRUD Automator resources using @elsikora/nestjs-crud-automator. Use when working with ApiController, ApiService, ApiFunction, ApiFunctionCustom, ApiRouteCustom, ApiMethod, ApiPropertyDescribe, ApiPropertyCopy, manual DTOs, autoDto, GETLIST response item DTOs…

not rated 279 changed 3d ago A 121 tokens original MIT

api-integration

124

MadAppGang/claude-code

Skill Claude CodeCodex needs its repo

Use when integrating Apidog + OpenAPI specifications with your React app. Covers MCP server setup, type generation, and query layer integration. Use when setting up API clients, generating types from OpenAPI, or integrating with Apidog MCP.

not rated 279 5mo ago A 51 tokens original MIT

flvx-api

125

Sagit-chu/flvx

Skill Claude CodeCodex

Operate FLVX traffic forwarding management system via REST API. Supports user/node/tunnel/forward management, federation clustering, and traffic monitoring. Use when user wants to manage FLVX panel programmatically or via natural language.

not rated 272 +1 5d ago B 47 tokens GPL-3.0

nestjs-best-practices

126

Kadajett/agent-nestjs-skills

Skill Claude CodeCodex

NestJS best practices and architecture patterns for building production-ready applications. This skill should be used when writing, reviewing, or refactoring NestJS code to ensure proper patterns for modules, dependency injection, security, and performance.

not rated 270 +3 1mo ago A 50 tokens

DitriXNew/EDT-MCP

Skill Claude CodeCodex

Work with external data processor/report projects through EDT-MCP: metadata, forms, builds, and one-run debug launch. Not for prebuilt files outside an EDT project.

not rated 265 changed 3d ago A 43 tokens AGPL-3.0

qveris

128

QVerisAI/qveris-agent-toolkit

Skill Claude CodeCodex

Discover, inspect, and call third-party API capabilities via the QVeris MCP server, then generate production code that calls the QVeris REST API for tasks like fetching weather data, stock prices, or public datasets. Use when the user needs to find an external API, integrate a web service, connect to a third-party…

not rated 260 2d ago A 80 tokens original MIT

ocli-api

129

EvilFreelancer/openapi-to-cli

Skill Claude Code

Turn any OpenAPI/Swagger API into CLI commands and call them. Search endpoints with BM25, check parameters, execute — no MCP server needed.

not rated 258 +1 2d ago A 34 tokens original MIT

accounted-api

130

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 258 +1 yesterday A 123 tokens

netlify-development

131

Mindrally/skills

Skill Claude CodeCodex

Best practices for building and deploying Netlify sites, covering serverless and edge functions, Netlify Blobs storage, the Image CDN, and build configuration. Use when writing Netlify Functions or Edge Functions, configuring netlify.toml or redirects/headers, managing environment variables across deploy contexts…

not rated 258 +9 changed 3d ago A 78 tokens original Apache-2.0

livekit-agents

132

livekit-examples/agent-starter-python

Skill Claude CodeCodex

Build voice AI agents with LiveKit Cloud and the Agents SDK. Use when the user asks to "build a voice agent", "create a LiveKit agent", "add voice AI", "implement handoffs", "structure agent workflows", or is working with LiveKit Agents SDK. Provides opinionated guidance for the recommended path: LiveKit Cloud +…

not rated 256 +1 2d ago A 88 tokens copy · 84% MIT

new-deno-app

133

jackfranklin/dotfiles

Skill Claude Code

Scaffold a new Deno 2 + Hono + Deno KV + Eta + HTMX app with password auth and PWA support. Use when the user wants to create a new personal web app following this stack.

not rated 254 5d ago A 50 tokens original MIT

sandbox-environment

134

pssah4/vault-operator

Skill Claude CodeCodex

Sandbox API reference, proven patterns, and library recommendations for evaluateexpression.

not rated 249 +1 6d ago A 17 tokens original Apache-2.0

salesforce

135

jdrhyne/agent-skills

Skill Claude CodeCodex

Query and manage Salesforce CRM data via the Salesforce CLI (sf). Run SOQL/SOSL queries, inspect object schemas, create/update/delete records, bulk import/export, execute Apex, deploy metadata, and make raw REST API calls.

not rated 241 8d ago A 50 tokens original MIT

api-designer

136

anxiong2025/25-Day-Agents-Course-by-Google

Skill Claude Code

A helper for designing REST APIs, which let software exchange data over standard web requests. It focuses on consistent names and common design practices.

not rated 240 8mo ago A 20 tokens

backend-conventions

137

fpindej/netrock

Skill Claude Code

Backend convention reference (.NET 10 / C# 13). Auto-injected into backend-aware agents - not user-invocable.

not rated 231 6d ago A 27 tokens original MIT

doc-sync

138

NVIDIA/TensorRT-Model-Connect

Skill Codex needs its repo ✓ vendor

Use for documentation maintenance scans that keep the canonical website journey, repo-local skills, commands, API reference, architecture and design, extension guides, feature context, ADRs, and traceability status aligned with the current GitHub main branch. Covers the Source/Internal CI boundary and model-owned…

not rated 229 +10 2d ago A 65 tokens original Apache-2.0

DemonDamon/AgenticX

Skill Claude CodeCodex

Guide for using the A2A (Agent-to-Agent) communication protocol in AgenticX including agent discovery, skill invocation, remote agent cards, and distributed agent systems. Use when the user wants agents to communicate with each other, set up distributed agent systems, invoke remote agent skills, or build…

not rated 228 +1 changed 2d ago A 73 tokens original Apache-2.0

aki77/activestorage-validator

Skill Claude CodeCodex

Validate ActiveStorage attachments (content type, file size, file extension) with the activestorage-validator gem's blob validator. Use when adding validations to hasoneattached / hasmanyattached attributes.

not rated 226 2mo ago A 48 tokens original MIT

neon

141

xai-org/plugin-marketplace

Skill Claude CodeCodex ✓ vendor

Overview of the Neon platform for apps and agents, spanning Postgres, Auth, Data API, and the new services: Object Storage, Compute Functions, and AI Gateway. Use whenever "Neon" is mentioned for an overview of how to work with Neon and how to get started. Otherwise, the individual capabilities are the triggers…

not rated 223 +6 yesterday A 138 tokens

apigee-proxy-skill

142

apigee/devrel

Skill Claude CodeCodex

Teaches an LLM agent to scaffold, configure, validate, package, upload, and deploy Apigee X / hybrid API proxies by orchestrating the 18 MCP tools exposed by the apigee-proxy-skill MCP server. The agent never writes XML by hand — tools generate policy XML from 25 Jinja2 templates, validate bundles with defusedxml…

not rated 220 24d ago A 103 tokens original Apache-2.0

temporal-developer

143

temporalio/skill-temporal-developer

Skill Claude CodeCodex

Develop, debug, and manage Temporal applications across Python, TypeScript, Go, Java, .NET, Ruby, and Rust. Use when the user is building workflows, activities, or workers with a Temporal SDK, debugging issues like non-determinism errors, stuck workflows, or activity retries, using Temporal CLI, Temporal Server, or…

not rated 214 +2 changed 2d ago A 161 tokens original MIT

LerianStudio/ring

Skill Claude CodeCodex

Migrating a Lerian Go app off lib-commons observability imports (deprecated shims or removed APIs) to lib-observability via a fixed mapping table, then bumps go.mod and validates the build; ring:backend-go applies the edits. Covers log/zap/runtime/assert, opentelemetry/tracing, HTTP middleware, context helpers, and…

not rated 211 +1 18d ago A 104 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: