Backend and APIs

19,593 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.

kafka

121

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 700 +2 changed 27d ago A SkillSpector: pass 31 tokens GPL-3.0

cobra-viper

122

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 697 +4 changed 13d ago A tokens not measured original MIT

api-doc-generator

123

JackyST0/awesome-agent-skills

Skill Claude CodeCodex

Generate API documentation from source code, supporting REST APIs, GraphQL, and various documentation formats.

not rated 667 +2 changed 28d ago A SkillSpector: pass 23 tokens original CC0-1.0

bb-sites

124

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 636 +1 2mo ago A 0 tokens

rails-conventions

125

rootstrap/rails_api_base

Skill Claude Code

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 634 2d ago A SkillSpector: pass 71 tokens original MIT

card-endpoint-shape

126

LedgerHQ/ledger-live

Skill Claude CodeCodex

Read this before adding or editing an endpoint in domain/api/card-management/src/api.ts, a credential-bearing one included.

not rated 624 +1 changed 1mo ago A SkillSpector: pass 30 tokens original MIT

nubase

127

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 620 +1 1mo ago A SkillSpector: warn 92 tokens original Apache-2.0

owl-admin-app-dev

128

slowlyo/owl-admin

Skill Claude CodeCodex

Use this skill when developing an application that installed slowlyo/owl-admin, especially backend CRUD, menus, permissions, controllers, services, routes, config/admin.php, app/Admin, helper functions, settings(), adminpages(), AdminPipeline, upload/file preview issues, route conflicts, custom login/menu examples, or…

not rated 620 3d ago A SkillSpector: pass 114 tokens original MIT

Matt-Dionis/claude-code-configs

Agent Claude Code needs its repo

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

not rated 619 1y ago A 29 tokens original MIT

node-tools

130

sno-ai/mda

Skill Claude CodeCodex

Run a TypeScript script via tsx to fetch an HTTP endpoint and stream the response. Use when you need a small Node.js helper for HTTP calls.

not rated 614 5mo ago A 34 tokens original Apache-2.0

AGENTS

131

emersonfelipesp/netbox-proxbox

Command Claude Code

This directory contains Django management commands for the ProxBox plugin.

not rated 608 +2 today A 0 tokens original Apache-2.0

gateway

132

adaline/gateway

Cursor rule Cursor needs its repo

The gateway core module is the central orchestrator that handles AI provider requests, manages caching, queuing, and provides unified interfaces for chat completion, embeddings, and tool responses.

not rated 607 3mo ago A 0 tokens original MIT

claude-api

133

andrew-kramer-inno/claude-code-source-build

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 595 7mo ago A 0 tokens

solana-dev

135

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 584 +2 changed yesterday A Socket: passSnyk: passSkillSpector: warn 258 tokens original MIT

resend

136

resend/resend-mcp

MCP server Claude CodeCodexCursor +2

One of 2 in .mcp.json

MCP server "resend" as configured in resend/resend-mcp. Runs dist/index.js with node. Needs 1 environment variable to run.

not rated 580 +2 today A tokens not measured original MIT

1c-server-stdio

137

vladimir-kharin/1c_mcp

MCP server Claude CodeCodexCursor +2

MCP server "1c-server-stdio" as configured in vladimir-kharin/1cmcp. Runs src.py_server with C:\Python\python. Needs 7 environment variables to run.

not rated 570 +4 3d ago A tokens not measured

enferno

138

level09/enferno

MCP server Claude CodeCodexCursor +2

A simple framework for building complex web applications. Runs locally from the flask Python package.

not rated 569 +1 yesterday A Socket: warn tokens not measured original MIT

butterbase-skills

139

butterbase-ai/butterbase-skills

Plugin Claude Code

Bundles 40 skills, 33 commands · 2,831 tokens together

Build full-stack apps with Butterbase — AI-Native Backend-as-a-Service. Skills for app creation, schema design, frontend deployment, RLS debugging, serverless functions, and contributing.

not rated 535 6d ago A tokens not measured original MIT

laravel-api-tool-kit

140

ahmedesa/laravel-api-tool-kit

Plugin Claude Code

Bundles 1 skill · 74 tokens together

Production-grade rules and workflows for Laravel REST APIs built with essa/api-tool-kit. 21 rule files and 8 guided workflows covering every layer of a Laravel API including DDD support.

not rated 533 6mo ago A tokens not measured original MIT

shioaji

141

Sinotrade/Shioaji

Plugin Claude Code

Bundles 1 skill · 212 tokens together

Shioaji Taiwan financial trading API guide. Covers Python native binding (sync/async), CLI tool, HTTP API server with SSE streaming, dashboard, and multi-language SDK integration (JS/TS, Go, C/C++, C#, Rust, Java/Kotlin) for TWSE/TPEX/TAIFEX markets.

not rated 530 +1 changed 7d ago A tokens not measured

mcp-server

142

sv-number/mcp-server

MCP server Claude CodeCodexCursor +2

Phone numbers for AI agents: order a private number, read the SMS verification code, hand it back. Runs locally from the sv-number-mcp npm package. Needs 1 environment variable to run.

not rated 529 +4 2mo ago A tokens not measured original MIT

spider-king

143

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 523 +2 changed 22d ago A 209 tokens original MIT

firebase

144

firebase/agent-skills

Plugin Gemini CLI

Prototype, build & run modern apps users love with Firebase's backend, AI, and operational infrastructure.

not rated 503 +8 2d ago A tokens not measured 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: