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.

kandev-protocol

97

kdlbs/kandev

Skill Claude CodeCodex

Follow the core Office agent protocol on wakeup, including parsing KANDEV context, checking blockers, commenting progress, updating status, and using the CLI safely.

not rated 1.1k +26 today A SkillSpector: warn 39 tokens AGPL-3.0

workflow-ai-coding

98

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 1.0k +48 changed 3d ago A SkillSpector: pass 85 tokens original MIT

phoenix-expert

99

0xfurai/claude-code-subagents

Agent Claude Code

Expert in Phoenix framework, optimizing web applications, and ensuring best practices. Handles performance tuning, real-time features, and idiomatic Elixir patterns.

not rated 1.0k +3 1y ago A 34 tokens original MIT

joeseesun/qiaomu-opencli-skills

Skill Claude CodeCodex needs its repo

A guide for creating OpenCLI adapters for websites. An adapter is code that lets a command-line tool communicate with a particular website’s interfaces and data.

not rated 998 +1 7mo ago A Socket: passSnyk: warnSkillSpector: warn 83 tokens original MIT

jongpie/NebulaLogger

Skill Claude CodeCodex

Use this skill when the user wants to add or update Nebula Logger instrumentation in Apex, LWC, Aura, Flow, or OmniStudio. Covers logging APIs, save patterns, record association, scenarios, tags, async transaction linking, and save method selection.

not rated 974 yesterday A SkillSpector: warn 60 tokens original MIT

cursorrules

102

qinshihu/itops-agent-platform

Cursor rule Cursor

ITops Agent is a one-stop intelligent ops platform. Stack: Node.js + Express + TypeScript + SQLite (backend) / React + Vite + Ant Design + Tailwind (frontend). DDD modules: 24 backend modules + 23 frontend modules. See .trae/rules/architecture.md §1.2.

not rated 955 +5 4d ago A 1,432 tokens

update-postman

103

Pipelex/pipelex

Command Claude Code

You update the Pipelex FastAPI collection directly in the user's Postman desktop app via the Postman API. You take an incremental, diff-based approach: read what's already in Postman, compare against the current API state, and only change what's needed.

not rated 949 +1 changed 11d ago A 0 tokens

sessy

104

marckohlbrugge/sessy

Plugin Claude Code

Bundles 1 MCP server

Track AWS SES bounces, complaints, and delivery stats from Claude Code. Requires a Sessy API key. Does not send email or change SES settings.

not rated 945 +1 yesterday A tokens not measured

cosmos-design-struct

105

Azure/azure-sdk-for-rust

Skill Claude Code ✓ vendor

Enforce consistent struct design conventions across sdk/cosmos crates. Validates visibility modifiers, field privacy, #[nonexhaustive] usage, and construction API patterns (Default/new with with setters, or optional separate builders with builder()/build()), and construction correctness on public structs. Can auto-fix…

not rated 887 +1 today A SkillSpector: pass 83 tokens original MIT

posthog

106

mereyabdenbekuly-ctrl/clodex-ide

Skill Claude CodeCodex

Complete guide for the PostHog plugin — REST API access for querying analytics with HogQL, managing feature flags, inspecting events and persons, reading insights, experiments, cohorts, surveys, and more.

not rated 870 14d ago A SkillSpector: warn 43 tokens AGPL-3.0

frontend

107

sullyo/webapp-starter

Cursor rule Cursor

You are an expert TypeScript software engineer and architect with over 10 years of industry experience. Your expertise spans the entire stack, including React, Next.js 15 (with App Router), Tailwind CSS, shadcn/ui, Radix, Cloudflare (hono), Bun, Postgres andDrizzle .

not rated 869 1y ago A 0 tokens original MIT

erwinkramer/bank-api

MCP server Claude CodeCodexCursor +2

One of 2 in mcp.json

MCP server "bankapi-v1-kuberneteskro", hosted remotely at bankapi.w.guanchen.nl, as configured in erwinkramer/bank-api.

not rated 845 +1 yesterday A tokens not measured

fastapi-guard

109

rennf93/fastapi-guard

Skill Claude CodeCodex

Production-ready security middleware for FastAPI. Use when adding IP filtering, rate limiting, per-route security decorators, route-resolution strict mode, global behavior rules, passive/log-only mode, or Guard Agent SaaS telemetry to a FastAPI app. Covers SecurityMiddleware setup, SecurityConfig tuning, and the…

not rated 825 changed 1mo ago A SkillSpector: pass 72 tokens original MIT

build-connector

110

getomnico/omni

Skill Claude Code

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 815 +5 changed 1mo ago A SkillSpector: pass 41 tokens original Apache-2.0

starlette

112

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 798 +5 6d ago A 163 tokens

menu-interactions

113

asmyshlyaev177/react-horizontal-scrolling-menu

Skill Claude CodeCodex

Wire mouse, wheel and touch input for react-horizontal-scrolling-menu: onWheel/onScroll are plain (api, event) => void callbacks, while ALL mouse/touch props (onMouseDown, onMouseUp, onMouseMove, onMouseLeave, onTouchStart, onTouchMove, onTouchEnd) are handler factories (api) => (event) => void. Covers mouse…

not rated 788 changed 1mo ago A SkillSpector: pass 147 tokens original MIT

runno

114

taybenlor/runno

MCP server Claude CodeCodexCursor +2

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

not rated 775 6d ago A tokens not measured original MIT

mindsdb/anton

Skill Claude CodeCodex

ONLY for writing backend or fullstack code BY HAND. NOT needed on the normal path — createartifact(fullstack-stateless-app or fullstack-stateful-app) followed by generateartifact writes the backend, verifies it by importing it and launches it. Recall this when editing an existing fullstack artifact, or when…

not rated 758 +1 changed 10d ago A SkillSpector: warn 130 tokens original MIT

x402

116

BillionsNetwork/verified-agent-identity

Skill Claude CodeCodex

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

not rated 757 +1 1mo ago A 0 tokens

cloudflare

117

dmmulroy/cloudflare-skill

Skill Claude CodeCodex

Comprehensive Cloudflare platform skill covering Workers, Pages, storage (KV, D1, R2), AI (Workers AI, Vectorize, Agents SDK), networking (Tunnel, Spectrum), security (WAF, DDoS), and infrastructure-as-code (Terraform, Pulumi). Use for any Cloudflare development task.

not rated 728 +1 9mo ago A Socket: warnSnyk: warn 68 tokens copy · 86% MIT

fullstack-engineer

118

partme-ai/full-stack-skills

Agent Claude Code

Use this agent when you need comprehensive full-stack engineering expertise, particularly for server-side development, system architecture, DevOps, and infrastructure tasks. Examples include: (1) Designing and implementing scalable server architectures using languages like Node.js, Python, Go, Java, or Ruby; (2)…

not rated 725 +8 1mo ago A 185 tokens original Apache-2.0

java-coding-standards

119

Snailclimb/AIGuide

Skill Codex

A set of conventions for writing, reviewing, refactoring and explaining Java and Spring Boot code. It covers common application layers such as controllers, services and data-access code, while allowing repository-specific rules to take priority.

not rated 725 +11 today A 144 tokens

tapcanvas-api

120

anymouschina/TapCanvas

Skill Claude CodeCodex

A single setup and command-line entry point for calling TapCanvas's public chat, drawing, image-understanding, video, task-result, and flow APIs.

not rated 709 +15 changed 8d ago A SkillSpector: pass 123 tokens original MIT

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: