Harness Toolbox/Agent capabilities

Tools & MCP

MCP servers, tool registries and function-calling plumbing

26 repositories, most starred first

🎨 The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the d…

79.1k
TypeScript
2 mo

🗂 The essential checklist for modern web development, for humans and AI agents

73.2k
MDX
8 yrs

Chrome DevTools for coding agents

47.1k
TypeScript
10 mo

MCP server to provide Figma layout information to AI coding agents like Cursor

15.4k
+627d
TypeScript
1 yr

Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI, Codex) to messaging platforms (Feishu/Lark, Di…

14.1k
+3087d
Go
4 mo

An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with…

14.0k
+427d
Go
5 yrs

The all-in-one, open-source backend platform for agentic coding. InsForge gives your coding agent database, au…

12.3k
+1747d
TypeScript
11 mo

A Python library for anomaly detection across tabular, time series, graph, text, image, and audio data. 60+ de…

9.9k
+107d
Python
8 yrs

Put an end to code hallucinations! GitMCP is a free, open-source, remote MCP server for any GitHub project

8.3k
+207d
TypeScript
1 yr

A library of Agent Skills designed to work with the Stitch MCP server. Each skill follows the Agent Skills ope…

7.6k
+8347d
TypeScript
6 mo

Self-hosted, open-source agent skill registry for enterprises. Publish & version skill packages, govern with R…

4.0k
+747d
Java
4 mo

Open-source auth gateway connecting 1000+ SaaS providers to AI agents through SDK, CLI, MCP, HTTP, and OpenAPI…

2.8k
+1,5007d
TypeScript
2 wk

🦖 Serverless AI Agent Framework with Geo-distributed Edge AI Infra.

1.9k
+37d
Rust
6 yrs

🪄 Flint is a visualization language that lets AI agents reliably create expressive, good-looking charts from…

1.8k
+5717d
TypeScript
2 mo

Helping coding agents never make mistakes working with public or private libraries without wasting the context…

1.1k
+37d
TypeScript
1 yr

Token-efficient MCP adapter for Pi coding agent

1.0k
+297d
TypeScript
5 mo

Desktop companion platform with animated pets, Plugin SDK v3, official plugins, and optional local coding-agen…

917
+357d
TypeScript
2 mo

DeFi toolkit for AI agents and coding assistants — deposit funds, execute trades, and manage crypto wallets. W…

827
+17d
3 mo

Attributed, resolvable artifact references for agent handoffs — a ~30-byte token instead of pasted context. MC…

802
Rust
1 wk

Shell and coding agent on mcp clients

667
+17d
Python
1 yr

🔥🔥🔥 Turn AI-written code into real apps. Nubase is an open-source, AI-native backend platform for AI Coding…

485
+147d
Java
1 mo

AI-powered annotations for localhost development. Create visual feedback on your apps and let AI coding agents…

110
+47d
JavaScript
1 yr

Notion CLI with AI agent support. Smart queries, Obsidian sync, batch ops, backups, validation and more.

86
TypeScript
5 mo

The first SSH client built for AI agents. Let Claude Code, Codex, and other CLI agents manage your servers thr…

58
+27d
Rust
5 mo

让 AI 助手轻松获取抖音、TikTok、B 站、小红书等 21 个主流平台的数据|Enable AI assistants to easily access data from 21 mainstream platfo…

26
Shell
2 mo

对网页deepseek的封装,实现免费API调用。支持 OpenAI completions / responses socket。可工具调用,可接入codex、copilot。轻量自用

21
TypeScript
2 mo

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