Backend and APIs

24,034 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

rust-skills

121

sockudo/sockudo

Skill Claude CodeCodex

Comprehensive Rust coding guidelines with 179 rules across 14 categories. Use when writing, reviewing, or refactoring Rust code. Covers ownership, error handling, async patterns, API design, memory optimization, performance, testing, and common anti-patterns. Invoke with /rust-skills.

not rated 796 +4 today A 62 tokens original MIT

Wax AGENTS.md

122

christopherkarani/Wax

Instructions file CodexOpenCode

AGENTS.md instructions for christopherkarani/Wax, covering wax agent instructions, public repository hygiene, change discipline, navigation and public api.

not rated 788 changed yesterday A 1,437 tokens original Apache-2.0

genai-sdk

123

GoogleCloudPlatform/vertex-ai-samples

Skill Claude CodeCodex

Guides the usage of Gemini API on Google Cloud Vertex AI with the Gen AI SDK. Use when the user asks about using Gemini in an enterprise environment or explicitly mentions Vertex AI. Covers SDK usage (Python, JS/TS, Go, Java, C#), capabilities like Live API, tools, multimedia generation, caching, and batch prediction.

not rated 784 +4 today A 73 tokens original Apache-2.0

runno

124

taybenlor/runno

MCP server Claude CodeCodexCursor +2

MCP Server for the Runno Sandbox. Runs locally from the @runno/mcp npm package.

not rated 772 +1 1mo ago A tokens not measured original MIT

build-connector

125

getomnico/omni

Skill Claude CodeCodex

Build a new connector for Omni workplace agents. Use when creating a new data source integration, scaffolding connector structure, exposing agent actions/tools/resources, or needing help with the connector SDK.

not rated 771 +4 yesterday A 41 tokens original Apache-2.0

starlette

126

simonw/research

Skill Claude CodeCodex

Build async web applications and APIs with Starlette 1.0, the lightweight ASGI framework for Python. Use this skill whenever a user wants to create an async Python web app, REST API, WebSocket server, or ASGI application using Starlette. Triggers include mentions of 'Starlette', 'ASGI', async Python web frameworks, or…

not rated 766 2d ago A 163 tokens

x402

127

BillionsNetwork/verified-agent-identity

Skill Claude CodeCodex

Handle 402 Payment Required HTTP responses by executing payment and fetching the protected resource.

not rated 757 3mo ago A 0 tokens

mindsdb/anton

Skill Claude CodeCodex

MANDATORY reading before writing ANY backend, API, server, or fullstack application code (createartifact types fullstack-stateless-app / fullstack-stateful-app, or anything that will be launched with launchbackend). Contains the complete hard contract: the canonical FastAPI+Mangum backend.py template, SECRETS…

not rated 752 +3 changed yesterday A 115 tokens original MIT

domain-driven-design

129

citypaul/.dotfiles

Skill Claude CodeCodex

Domain-Driven Design patterns for TypeScript. Use when implementing ubiquitous language, value objects, entities, aggregates, domain events, domain services, or bounded contexts. Only applies to projects that explicitly use DDD. Do NOT use for simple CRUD or projects without domain modeling.

not rated 725 +2 changed yesterday A 58 tokens

neo4j-labs/create-context-graph

Instructions file

Claude Code instructions for neo4j-labs/create-context-graph, covering claude.md — create context graph, project overview, quick reference, setup and run tests.

not rated 719 +2 changed today A 12,544 tokens original Apache-2.0

MCP-Nest CLAUDE.md

131

rekog-labs/MCP-Nest

Instructions file

Claude Code instructions for rekog-labs/MCP-Nest, covering claude.md, what this repo is, packages, layout and commands.

not rated 703 +1 yesterday A 916 tokens original MIT

octo-cli CLAUDE.md

132

Mininglamp-OSS/octo-cli

Instructions file

Claude Code instructions for Mininglamp-OSS/octo-cli, covering claude.md — octo-cli project instructions, what is octo-cli, architecture, identity model and command structure (12 active domains, 322 operations).

not rated 673 changed today A 4,507 tokens original Apache-2.0

Olshansk/rss-feeds

Skill Claude CodeCodex

Generate Python RSS feed scrapers from blog websites, integrated with hourly GitHub Actions.

not rated 677 today A 22 tokens original MIT

api-guide

134

lablup/backend.ai

Skill Claude CodeCodex

Guide for implementing REST and GraphQL APIs (create, get, search, update, delete, purge, scope prefix patterns, admin prefix, SearchScope, BaseFilterAdapter, @apifunction, Click CLI).

not rated 672 today A 46 tokens LGPL-3.0

workflow-ai-coding

135

w8123/EnterpriseAgentFramework

Skill Claude CodeCodex

Edit, validate, debug, publish, and inspect ReachAI Workflow drafts through the Workflow AI Coding REST API. Use when asked to create or modify a workflow graph, add/update/delete nodes or edges, validate GraphSpec, dry-run or debug-run a workflow, inspect trace/run output, check release readiness, publish a validated…

not rated 684 +48 5d ago A 85 tokens original MIT

kafka

136

opskat/opskat

Skill Claude CodeCodex

Manage Kafka topics, consumer groups, ACLs, schemas, connectors and messages via exec, using a family + verb + target command syntax.

not rated 658 +5 yesterday A 31 tokens GPL-3.0

create-tutorial

137

membrane/api-gateway

Skill Claude CodeCodex

Scaffold a new Membrane API Gateway tutorial in the api-gateway repo — the numbered self-teaching YAML under distribution/tutorials/ /, its support files and README links, and the matching auto-discovered integration test. Use whenever the user asks to create, add, write, or scaffold a tutorial (or a tutorial step)…

not rated 641 +2 today A 97 tokens original Apache-2.0

kiro2api CLAUDE.md

138

caidaoli/kiro2api

Instructions file

Repository instructions for working on kiro2api, an AI API proxy server that connects Anthropic and OpenAI APIs with AWS CodeWhisperer. They cover the project, code exploration, editing rules, build commands, tests, and tools.

not rated 635 +1 2mo ago A 1,249 tokens original MIT

rails-conventions

139

rootstrap/rails_api_base

Skill Claude CodeCodex

Rootstrap Rails conventions. Use when writing, reviewing, or editing any Rails code — controllers, models, migrations, routes, views, mailers, initializers, locale files, or Rails config. Covers routing, ActiveRecord, migrations, i18n, time zones, mailers, assets, Bundler groups, and logging.

not rated 631 +2 7d ago A 71 tokens original MIT

cobra-viper

140

spf13/go-skills

Plugin Claude Code

Bundles 1 skill · 104 tokens together

Definitive guide to building CLI applications with Cobra and Viper — command-first architecture, configuration management, environment variable binding, and in-memory CLI testing. Written by spf13, the original creator of both libraries.

not rated 632 +10 1mo ago A tokens not measured

bb-sites

141

epiral/bb-sites

Skill Claude CodeCodex

A development guide for bb-sites, written partly in Chinese, with instructions for analysing and building sites around an API. API reverse engineering means observing how an existing service communicates so its requests can be understood.

not rated 628 +2 17d ago A 0 tokens

Matt-Dionis/claude-code-configs

Agent Claude Code

Expert in multi-tenant AI companion architecture, isolation strategies, companion lifecycle management, and scaling patterns for production companion services.

not rated 625 1y ago A 29 tokens original MIT

nubase

143

OtterMind/Nubase

Skill Claude CodeCodex

Use when the user mentions Nubase broadly, wants a backend for an AI-generated app, or needs to deploy/publish generated code online — across Database, Auth, Storage, Assets (static frontend CDN), Functions (edge/serverless), AI Gateway, Memory, cron/scheduled jobs, Supabase-style REST/RLS, servicerole keys, or MCP.…

not rated 624 +1 18d ago A 92 tokens original Apache-2.0

spring-ai-expert

144

spring-ai-community/spring-ai-agent-utils

Agent

Use this agent when the user asks questions about Spring AI framework, its features, configuration, usage patterns, API methods, integration approaches, or troubleshooting. Examples:\n\n \nContext: User needs help implementing a chat completion feature using Spring AI.\nuser: "How do I set up a chat client with Spring…

not rated 619 +8 5d ago A 0 tokens original Apache-2.0

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