What is mural-mcp CLAUDE.md?

A repository guide for Claude Code, an AI coding assistant, when working on a specific Mural integration project. It explains the package manager, development commands, server design, authentication setup, and testing tools.

Use it to compile and run the project, test its Mural connection and OAuth login, inspect the MCP server, and understand its available tools.

It gives the assistant project-specific rules and commands, reducing guesswork when building, testing, or debugging the code.

How cogell/mural-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to cogell/mural-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/cogell/mural-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/cogell/mural-mcp

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/cogell/mural-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/cogell/mural-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/cogell/mural-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/cogell/mural-mcp/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/cogell/mural-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/cogell/mural-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 694 This file is loaded in full into every session.

When invoked 694 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00694	$0.00694
Opus 5.5	$0.00278	$0.00278
Sonnet 5.5	$0.00139	$0.00139
Haiku 4.5	$0.00069	$0.00069

Measured 1mo ago against content hash 7435aeccd8be, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mural-mcp 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.

CLAUDE.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 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.

Package Manager

Use pnpm for all package management operations.

Common Development Commands

Building and Development

pnpm run build - Compile TypeScript to JavaScript in build/ directory
pnpm run dev - Watch mode compilation with TypeScript
pnpm start - Run the compiled MCP server
pnpm run prepublishOnly - Pre-publish build step

Testing and Debugging

Test the MCP server manually: node build/index.js
Use MCP inspector: npx @modelcontextprotocol/inspector node build/index.js
Test OAuth flow: Set environment variables and run pnpm start

Architecture Overview

This is a Model Context Protocol (MCP) server that provides integration with the Mural visual collaboration platform through OAuth 2.0 authentication.

Core Components

MCP Server (src/index.ts) - Main entry point that:
- Uses stdio transport for MCP communication
- Implements 4 tools: list-workspaces, get-workspace, test-connection, clear-auth
- Handles environment variable validation for MURAL_CLIENT_ID
- Uses Zod for input validation
OAuth Handler (src/oauth.ts) - Manages authentication:
- Implements OAuth 2.0 with PKCE (Proof Key for Code Exchange)
- Stores tokens in ~/.mural-mcp-tokens.json
- Automatically refreshes expired tokens
- Runs temporary HTTP server on port 3000 for OAuth callback
Mural API Client (src/mural-client.ts) - API interaction:
- Makes authenticated requests to https://app.mural.co/api/public/v1
- Handles token refresh automatically
- Provides workspace listing and retrieval methods
TypeScript Types (src/types.ts) - Type definitions for:
- Mural API responses (MuralWorkspace, MuralWorkspacesResponse)
- OAuth flow data (OAuthTokens, PKCEChallenge, etc.)

Environment Variables

Required:

MURAL_CLIENT_ID - OAuth client ID from Mural Developer Portal

Read the full file on GitHub · 77 lines

Changes

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 · 77 lines · 694 tokens per session scan A 7435aeccd8be

Subscribe to this mod's changes

mural-mcp CLAUDE.md is an instructions file published in the GitHub repository cogell/mural-mcp (3 stars, last pushed 1y ago), licensed MIT. It adds 694 tokens to every session, about $0.0028 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 2026-08-31.

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).

microsoft/vscode · 9,715 tokens

mural-mcp: Instructions file for Claude Code