Borrowing it
Nothing to install: this file belongs to SixHq/Overture. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/SixHq/Overture/main/CLAUDE.mdgit clone --depth 1 https://github.com/SixHq/OvertureWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/sixhq/overture/claude-md)<a href="https://agentmods.dev/instructions/sixhq/overture/claude-md"><img src="https://agentmods.dev/badge/instructions/sixhq/overture/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/sixhq/overture/claude-md"><img src="https://agentmods.dev/badge/instructions/sixhq/overture/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01450 | $0.01450 |
| Opus 5.5 | $0.00580 | $0.00580 |
| Sonnet 5.5 | $0.00290 | $0.00290 |
| Haiku 4.5 | $0.00145 | $0.00145 |
Grade A, and why
Overture CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
Overture is an MCP (Model Context Protocol) server that provides visual plan execution and approval workflows for AI coding agents. It intercepts AI agent planning phases and renders them as interactive visual flowcharts before code is written. Works with Claude Code, Cursor, Cline, GitHub Copilot, and Sixth AI.
Monorepo Structure
This is an npm workspaces monorepo with two packages:
packages/mcp-server- The MCP server (Node.js/TypeScript)packages/ui- The React frontend (React Flow + Zustand + Tailwind)
Build & Development Commands
# Install dependencies (from root)
npm install
# Development - runs both server and UI with hot reload
npm run dev
# Build all packages for production
npm run build
# Development - individual packages
npm run dev:server # MCP server only (tsx watch)
npm run dev:ui # UI only (vite dev server)
# Build - individual packages
npm run build:server # Outputs to packages/mcp-server/dist/
npm run build:ui # Outputs to packages/mcp-server/ui-dist/
# Production start
npm start # Runs built MCP server
# Clean all build artifacts
npm run clean
MCP Server Package Commands
cd packages/mcp-server
npm run dev # tsx watch src/index.ts
npm run build # tsup to dist/
npm run lint # eslint src/**/*.ts
npm run start # node dist/index.js
UI Package Commands
cd packages/ui
npm run dev # vite dev server
npm run build # tsc && vite build
npm run preview # vite preview
Architecture
MCP Server (packages/mcp-server/src/)
Entry Points:
index.ts- MCP server initialization using@modelcontextprotocol/sdk, starts HTTP (3031) and WebSocket (3030) serverscli.ts- CLI entry point fornpx overture-mcp
Core Modules:
tools/handlers.ts- Implements all 11 MCP tools (submit_plan,get_approval,update_node_status, etc.)store/plan-store.ts-MultiProjectPlanStoremanages plans across multiple projects with Promise-based approval flowwebsocket/ws-server.ts-WebSocketManagerhandles client connections, project subscriptions, and relay modehttp/server.ts- Express server serving UI and API endpoints (/api/test-plan,/api/mcp-marketplace)parser/xml-parser.ts- SAX-basedStreamingXMLParserfor parsing plan XML into nodes/edgesparser/output-parser.ts- Parses structured output from agent executionstorage/history-storage.ts- Persists plans to~/.overture/history.jsontypes.ts- Core types:PlanNode,PlanEdge,Plan,ProjectContext,WSMessageutils/plan-diff.ts- Computes differences between plan versions
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 148 lines · 1,450 tokens per session scan A a745e73ebb97
Overture CLAUDE.md is an instructions file published in the GitHub repository SixHq/Overture (641 stars, last pushed 7mo ago), licensed MIT. It adds 1,450 tokens to every session, about $0.0058 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.