Backend and APIs

30,392 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.

nspady/google-calendar-mcp

Agent Claude Code

Implements Google Calendar MCP features based on research findings from gcal-api-research skill. Use after completing API research to write handlers, schemas, tests, and documentation. Specializes in following established patterns and ensuring comprehensive test coverage.

not rated 1.2k +3 2d ago A 52 tokens original MIT

channels

98

ModalityDance/PalmClaw

Skill Claude CodeCodex

Configure per-session remote channels (Telegram/Discord/Slack/Feishu/Email/WeCom), then verify inbound/outbound routing and processing visibility.

not rated 1.2k +1 9d ago A 32 tokens AGPL-3.0

mongodb-js/mongodb-mcp-server

Skill Claude CodeCodex

Migrates external consumer code from the mongodb-mcp-server v1/v2 single-package API to the v3 scoped-package structure. In v3, mongodb-mcp-server is a binary-only package (npx / MCPB); library embedding uses @mongodb-js/mcp-cli, @mongodb-js/mcp-core, @mongodb-js/mcp-http-runners, @mongodb-js/mcp-tools-, and the other…

not rated 1.1k +7 changed yesterday A 153 tokens original Apache-2.0

yargi-mcp CLAUDE.md

101

saidsurucu/yargi-mcp

Instructions file

Instructions for saidsurucu/yargi-mcp, covering claude.md, project overview, key commands, installation and setup and install from pypi (no git required).

not rated 1.1k +1 29d ago A 23,161 tokens original MIT

create-bubble

102

bubblelabai/BubbleLab

Skill Claude CodeCodex

Create a new Bubble integration for Bubble Lab following all established patterns and best practices from CREATEBUBBLEREADME.md.

not rated 1.1k +1 4mo ago A 27 tokens original Apache-2.0

Rain120/qq-music-api

Instructions file CodexOpenCode

Project instructions for qq-music-api, a TypeScript server built with Koa that provides a consistent interface to QQ Music services. They explain its request flow, API Explorer, and main directories.

not rated 1.1k +1 14d ago A 2,444 tokens original MIT

copilot-api AGENTS.md

104

caozhiyuan/copilot-api

Instructions file CodexOpenCode

AGENTS.md instructions for caozhiyuan/copilot-api, covering repository guidelines, project structure & module organization, build, test, and development commands, coding style & naming conventions and testing guidelines.

not rated 1.0k +7 2d ago A 652 tokens original MIT

joeseesun/qiaomu-opencli-skills

Skill Claude CodeCodex

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 985 +1 4mo ago A 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 958 +1 2d ago A 60 tokens original MIT

taste

107

TryCaspian/caspian-sdk

Skill Claude CodeCodexCursor

Domain-first store/port design for any codebase: product-shaped APIs, swappable backends, schema at boundaries, one vocabulary catalog (derive don’t re-author), no infrastructure names on the domain surface. Use when adding or refactoring persistence, cache, policy resolve, registries, or anything that might leak…

not rated 936 +4 10d ago A 145 tokens AGPL-3.0

SylphxAI/pdf-reader-mcp

Instructions file CodexOpenCode

AGENTS.md instructions for SylphxAI/pdf-reader-mcp, covering pdf-reader-mcp — local agent notes only, boundary hazards, local commands, validation notes and backend false-authority fence.

not rated 915 +9 yesterday A 690 tokens original MIT

api-console AGENTS.md

109

mulesoft/api-console

Instructions file CodexOpenCode

AGENTS.md instructions for mulesoft/api-console, covering agents.md - api-console v6, tech stack, two entry points, amf model architecture (critical) and what is amf?.

not rated 909 9d ago A 1,444 tokens

ruby-sdk AGENTS.md

110

modelcontextprotocol/ruby-sdk

Instructions file CodexOpenCode ✓ vendor

AGENTS.md instructions for modelcontextprotocol/ruby-sdk, covering agents.md, project overview, dev environment setup, build and test commands and testing instructions.

not rated 902 +6 3d ago A 1,370 tokens

cosmos-design-struct

111

Azure/azure-sdk-for-rust

Skill Claude CodeCodex ✓ 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 885 yesterday A 83 tokens original MIT

frontend

112

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

posthog

113

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 864 +2 2d ago A 43 tokens AGPL-3.0

api

114

xberg-io/html-to-markdown

Skill Claude CodeCodex

Use html-to-markdown-rs api reference documentation.

not rated 860 6d ago A 13 tokens original MIT

zeromicro/go-queue

Instructions file GitHub Copilot

Copilot instructions for zeromicro/go-queue, a project described as: Kafka, Beanstalkd Pub/Sub framework.

not rated 838 7mo ago A 7 tokens original MIT

anthonylee991/gemini-superpowers-antigravity

Skill Claude CodeCodex

Builds reliable automations that integrate with REST APIs: auth, pagination, retries, rate limits, idempotency, webhooks, data mapping, and safe error handling. Use when calling external APIs, syncing systems, or building ETL-style workflows.

not rated 826 +1 7mo ago A 57 tokens original MIT

fastapi-guard

117

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 813 yesterday A 72 tokens original MIT

helix-org-cli

118

helixml/helix

Skill Claude CodeCodex

Use the Helix CLI to operate helix-org (bots, topics, processors, chat) and raw REST via helix api. Use when listing/managing org bots, chatting with chief-of-staff or other bots, or calling any authenticated Helix API path.

not rated 804 +1 yesterday A 59 tokens

rust-skills

119

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 795 +4 yesterday A 62 tokens original MIT

Wax AGENTS.md

120

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 790 changed yesterday A 1,437 tokens original Apache-2.0

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