Claude Code and AI coding agent tools

Open-source add-ons for Claude Code and other coding agents. Descriptions are written by Openaibuzz from each project's own README. Stars, licence and last update are read from GitHub; the build refreshes them daily and these values are the fallback.

New and rising this month

New open-source projects for coding agents that are gaining stars fast, found daily with the GitHub search API. Descriptions are the projects’ own.

yetone/magpie: Every agent's model. One place. Codex on DeepSeek, Claude Code on Kimi, from the menu bar. (5,549 GitHub stars)
rehan-remade/universal-modder: Point Claude at any game. Skills, tools and the fal MCP that let Claude Code mod almost any PC game you own: recon, reverse engineering, fal-generated art/3D/audio, in-game testing, showcase videos. (4,720 GitHub stars)
Louis-CFM/coucou: A tiny friend in your Mac's notch and on your iPhone that keeps an eye on your AI coding agents: Claude Code, Codex, Cursor, Gemini CLI, Antigravity and more. Approve from the notch or your Lock Screen. (3,857 GitHub stars)
dzhng/jevgrep: Find code by asking what it does. A CLI for coding agents that uses Jev to discover relevant files and source context. (2,354 GitHub stars)
kaankiziltug/logo-design-skill: A comprehensive logo-design skill for Claude, Gemini CLI, Codex and other AI agents: principles, process, SVG craft, testing tools and a 1,400+ logo reference library. (2,184 GitHub stars)
QingYunA/answer-me-with-html: Answer me with HTML — an agent skill that answers hard questions with a one-page HTML you can actually read. 让 AI Agent 用一页 HTML 回答复杂问题。 (1,835 GitHub stars)
edenfunf/reelmimic: Show it a video you love. Get a new video in the same style. An AI crew (Claude Code or Codex) plans, builds and reviews it with you. (1,629 GitHub stars)
shader-effects-inc/shaders: WebGPU components for React, Vue, Svelte, Solid, JS & Framer (1,515 GitHub stars)
Clearailhc/clearai-dsh: ClearAI is a native DSH plugin that brings the Epistemic Loop to DeepSeek Harness. (1,304 GitHub stars)
mikehasa/golive-skill: Take your agent-built product live: hosting, database, domain, email, payments — on your own accounts. Open-source Agent Skill + zero-dependency Node CLI: detect → plan → approve → apply → verify. No GoLive account, back (1,232 GitHub stars)
awlevin/typesafe-computer-use: Computer use for about $0.0002 a step: OCR the screen, classify the next action with TypeSafe, click. macOS. (1,174 GitHub stars)
To3akaRin/mac-computer-use: Enable any LLM to control your computer with cross-platform support, featuring 3D modeling examples and live demos. (1,128 GitHub stars)

Harness and workflow

Setups that change how the agent plans and works before it writes code.

Learn Claude Code (shareAI-lab/learn-claude-code): A step-by-step course that builds a small Claude Code-style agent harness from scratch, to show how coding agents work under the hood. (78,082 GitHub stars, MIT licence, updated 2026-09-28)
Karpathy skills (CLAUDE.md) (multica-ai/andrej-karpathy-skills): A single CLAUDE.md file of coding guidelines based on Andrej Karpathy's notes on common LLM coding mistakes. (217,301 GitHub stars, updated 2026-04-20)
Superpowers (obra/superpowers): A skills framework and development method for coding agents: brainstorm, plan, then implement with tests, using reusable skills. (296,071 GitHub stars, MIT licence, updated 2026-10-06)
Ponytail (DietrichGebert/ponytail): A skill that pushes the agent to write the smallest change that works and avoid unnecessary code. (156,968 GitHub stars, MIT licence, updated 2026-10-05)
gstack (garrytan/gstack): Garry Tan's Claude Code setup: a set of opinionated slash-command tools that act as product, design, engineering-manager, release and QA roles. (135,577 GitHub stars, MIT licence, updated 2026-10-07)
ECC (affaan-m/ECC): A bundle of skills, rules, memory and security settings for Claude Code, Codex, Cursor and similar agents, aimed at research-first development. (274,402 GitHub stars, MIT licence, updated 2026-10-05)

Skills and plugins

Reusable instructions and plugins for tasks the agent repeats.

Taste Skill (Leonxlnx/taste-skill): Frontend design guidance for AI agents, meant to stop generic-looking AI-generated interfaces. (93,196 GitHub stars, MIT licence, updated 2026-10-06)
Anthropic Agent Skills (anthropics/skills): Anthropic's public collection of Agent Skills: folders of instructions and scripts Claude loads for specific tasks such as documents and spreadsheets. (179,945 GitHub stars, updated 2026-10-05)
wshobson/agents (wshobson/agents): A large catalogue of plugins, agents, skills and commands that work across Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot and more. (40,254 GitHub stars, MIT licence, updated 2026-10-05)
Claude Code plugins (official) (anthropics/claude-plugins-official): Anthropic's managed directory of Claude Code plugins. (37,478 GitHub stars, Apache-2.0 licence, updated 2026-10-07)
UI UX Pro Max (nextlevelbuilder/ui-ux-pro-max-skill): A design skill that gives the agent UI and UX guidance for building interfaces across platforms. (133,647 GitHub stars, MIT licence, updated 2026-10-03)
Awesome Claude Skills (ComposioHQ/awesome-claude-skills): A curated list of Claude skills, resources and tools. (76,615 GitHub stars, updated 2026-09-18)

Memory and codebase context

Ways to keep context between sessions and avoid re-reading the whole repo.

Planning with Files (OthmanAdi/planning-with-files): Keeps the agent's plan in markdown files so long tasks survive clearing the context and restarting sessions. (27,312 GitHub stars, MIT licence, updated 2026-10-06)
claude-mem (thedotmack/claude-mem): Records what the agent does in a session, compresses it, and feeds the relevant parts back into later sessions. (97,272 GitHub stars, Apache-2.0 licence, updated 2026-10-07)
CodeGraph (colbymchenry/codegraph): A local, pre-built knowledge graph of your code that stays in sync, so agents find what they need with fewer tool calls. (73,353 GitHub stars, MIT licence, updated 2026-10-07)
Graphify (Graphify-Labs/graphify): Turns a codebase and its docs, schemas and configs into a queryable knowledge graph, used as a skill from Claude Code, Cursor, Codex or Gemini CLI. (124,448 GitHub stars, Apache-2.0 licence, updated 2026-10-06)
Repomix (yamadashy/repomix): Packs a whole repository into one AI-friendly file you can give to an LLM. (28,734 GitHub stars, MIT licence, updated 2026-10-03)

Tools, MCP servers and apps

Connections that let the agent reach the web, GitHub, a browser and other models.

Multica (multica-ai/multica): A self-hostable workspace where you assign issues to coding agents like teammates and review what they hand back. (52,067 GitHub stars, Source-available licence, updated 2026-10-04)
Firecrawl (firecrawl/firecrawl): Turns websites into clean data for AI agents: crawling, scraping and search through an API. (189,259 GitHub stars, AGPL-3.0 licence, updated 2026-10-07)
CC Switch (farion1231/cc-switch): A desktop app to switch API providers and manage MCP servers, skills and prompts for Claude Code, Codex, Gemini CLI and others. (140,557 GitHub stars, MIT licence, updated 2026-10-07)
Vibe Kanban (BloopAI/vibe-kanban): A kanban board for planning work and reviewing what coding agents produce. Its README says the project is being sunset. (28,273 GitHub stars, Apache-2.0 licence, updated 2026-09-19)
GitHub MCP Server (github/github-mcp-server): GitHub's official MCP server, giving agents access to repositories, issues and pull requests. (33,414 GitHub stars, MIT licence, updated 2026-10-06)
Playwright MCP (microsoft/playwright-mcp): Microsoft's MCP server that lets an agent drive a real browser to test and check its work. (37,886 GitHub stars, Apache-2.0 licence, updated 2026-09-28)
Claude Code Router (musistudio/claude-code-router): A local router that sends coding-agent requests to different models and providers. (37,579 GitHub stars, MIT licence, updated 2026-09-26)
Awesome MCP Servers (punkpeye/awesome-mcp-servers): A large curated list of MCP servers. (95,886 GitHub stars, MIT licence, updated 2026-09-27)

Cost, monitoring and guides

Help with token use, visibility and good practice.

Claude Code best practice (shanraisshan/claude-code-best-practice): A collected guide of Claude Code practices, tips, agents, commands and skills. (67,204 GitHub stars, MIT licence, updated 2026-10-07)
Codex plugin for Claude Code (openai/codex-plugin-cc): OpenAI's plugin for using Codex from inside Claude Code to review code or hand off tasks. (33,902 GitHub stars, Apache-2.0 licence, updated 2026-07-08)
Claude HUD (jarrodwatts/claude-hud): A Claude Code plugin that shows context usage, active tools, running agents and to-do progress. (28,354 GitHub stars, MIT licence, updated 2026-10-03)
Caveman (JuliusBrussee/caveman): A skill and proxy that makes the agent answer in very short sentences to use fewer tokens. (110,252 GitHub stars, Apache-2.0 licence, updated 2026-10-07)