Open-Source Directory — Claude / Anthropic

Claude
Tools

A curated index of extensions, plugins, MCP servers, hooks, and integrations for Claude — discovered from GitHub and refreshed daily.

Repository Growth — Last 30 Days

8165entries
★ starsA–Z name

pi-anthropic-web-search

0
@code-yeongyu

Anthropic native web search policy extension for the pi coding agent. Ensures native web_search tools are present on anthropic-messages payloads and appends web search guidance to the system prompt.

updated May 2026

pi-anthropic-bash

0
@code-yeongyu

Anthropic native bash policy extension for the pi coding agent. Ensures native bash tools are present on anthropic-messages payloads when opt-in is enabled and appends bash guidance to the system prompt.

updated May 2026

pi-anthropic-code-execution

0
@code-yeongyu

Anthropic native code execution policy extension for the pi coding agent. Ensures native code_execution tools are present on anthropic-messages payloads when opt-in is enabled and appends code execution guidance to the system prompt.

updated May 2026

pi-anthropic-computer-use

0
@code-yeongyu

Anthropic native computer use extension for the pi coding agent. Registers the computer tool executor and ensures computer_20250124 is injected on anthropic-messages payloads when opt-in is enabled.

updated May 2026

pi-anthropic-text-editor

0
@code-yeongyu

Anthropic native text editor policy extension for the pi coding agent. Registers str_replace_based_edit_tool and ensures text_editor_20250728 is used on anthropic-messages payloads when opt-in is enabled.

updated May 2026

pi-anthropic-web-fetch

0
@code-yeongyu

Anthropic native web fetch policy extension for the pi coding agent. Ensures native web_fetch tools are present on anthropic-messages payloads and appends web fetch guidance to the system prompt.

updated May 2026

mcp-server-toolkit

0
@Tajaddin

Reusable framework for building Model Context Protocol (MCP) servers for Claude, plus three production-shaped example servers (filesystem, GitHub issues, SQLite). In-memory test harness with p99 round-trip 8.2 ms.

updated May 2026

terraform-provider-anthropic-claude-managed-agents

0
@modus-agendi

Community Terraform / OpenTofu provider for Anthropic Claude Managed Agents. Declaratively manage agents (with tools, MCP servers, skills, multiagent), environments, vaults, custom skill uploads, and memory stores. Secrets via Terraform 1.11 write-only attributes.

updated May 2026

dterm

0
@bendavid

Persistent terminal sessions per workspace with auto-reattach, plus a detachable wrapper for the Claude Code VS Code extension.

updated May 2026

toolforge-mcp

0
@luannamorim

Cost-disciplined MCP client agent with a deterministic 5-rule tool-selection heuristic and first-class dry-run.

updated May 2026

claude-from-dotnet

0
@sergiotorres262

Guía práctica para integrar la API de Anthropic Claude desde C# / .NET. Ejemplos listos para producción: chat, streaming, structured output, tool use, MCP, RAG.

updated May 2026

ClaudeCodeLearning

0
@Offsidee

14-day pike/zander fishing bite quality calendar - Chrome/Opera extension

updated May 2026

lead_gen_claude_sdk

0
@Comptech-Enterprises

Lead generation system rebuilt on Anthropic's Claude Agent SDK. A direct port of lead_gen_adk that demonstrates @tool, MCP servers, and ClaudeSDKClient.

updated May 2026

AI-Building-Claude-API

0
@akogitrepo

Hands-on Anthropic Claude API course — 14 modules covering API basics, prompt engineering, tool use, RAG, agents and more

updated May 2026

ghcp-for-claude-code

0
@sadityapal

An OpenAI- and Anthropic-compatible proxy that lets you use GHCP models within CLI tools like Claude Code. Please review README.md before use.

updated May 2026

leansec-claude-code-boilerplate

0
@eriklacson

Claude Code Boilerplate for Creating Extensions for the LeanSecurity Ecosystem

updated May 2026

marimo-mcp

0
@Vladisluv12

Mcp server and extension for marimo notebooks better understanding and using by claude code

updated May 2026

exainlabs-ai-mock-interview

0
@Yadagirichintha

AI-powered mock interview tool for Exainlabs — FastAPI backend, Anthropic Claude, voice-enabled frontend

updated May 2026

cli-tool-cheatsheet-docs

0
@tannerharris0n

AI-generated CLI cheat sheets and version diffs for Fortinet firewalls (FortiOS / FortiGate), with PDF export. BYOK Anthropic API key, 100% static / browser-only.

updated May 2026

kd-ai-dlc-tool

0
@trungtrankd

AI-powered Development Lifecycle (AIDLC) VS Code extension — Run a full SDLC pipeline using Claude Code agents

updated May 2026

research-agent

0
@Arun4535

AI research agent powered by Anthropic Claude tool use

updated May 2026

claude-code-rtl-fix

0
@dror-sa

VS Code extension adding strong RTL support (Hebrew/Arabic/Persian) to the Claude Code extension

updated May 2026

claude-code-bedrock-benchmark

0
@kobyal

Reproducible benchmark comparing Claude Code on Amazon Bedrock vs Anthropic direct API — surfaces the tool-count gap

updated May 2026

claude-ux-refined

0
@jgengineering2000

Quality-of-life patches and review document infrastructure for the Claude Code VS Code extension

updated May 2026
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