What is codebase-mcp CLAUDE.md?

A project instruction file for DeDeveloper23/codebase-mcp, a TypeScript project that provides tools through the Model Context Protocol. It documents the project’s commands, code conventions, tests, and folder layout.

Use it when modifying this project to follow its Node.js requirement, TypeScript style, naming rules, import conventions, test practices, and build or lint commands.

It gives coding agents a shared reference for how to build, check, format, and organize changes in the repository.

How DeDeveloper23/codebase-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to DeDeveloper23/codebase-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/DeDeveloper23/codebase-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/DeDeveloper23/codebase-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/dedeveloper23/codebase-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/dedeveloper23/codebase-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/dedeveloper23/codebase-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/dedeveloper23/codebase-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/dedeveloper23/codebase-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/dedeveloper23/codebase-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 270 This file is loaded in full into every session.

When invoked 270 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	$0.00270	$0.00270
Opus 5.5	$0.00108	$0.00108
Sonnet 5.5	$0.00054	$0.00054
Haiku 4.5	$0.00027	$0.00027

Measured 2mo ago against content hash dec0d881d693, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codebase-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 2mo 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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

MCP CLAUDE.md — 100% identical, 6 lines differ
mcp-appstore CLAUDE.md — 100% identical, 66 lines differ
roblex-studio-mcp-server CLAUDE.md — 100% identical, 0 lines differ

CLAUDE.md · 25 lines

What it actually says

MCP TypeScript SDK Guide

Build & Test Commands

npm run build        # Build ESM and CJS versions
npm run lint         # Run ESLint
npm test             # Run all tests
npx jest path/to/file.test.ts  # Run specific test file
npx jest -t "test name"        # Run tests matching pattern

Code Style Guidelines

TypeScript: Strict type checking, ES modules, explicit return types
Naming: PascalCase for classes/types, camelCase for functions/variables
Files: Lowercase with hyphens, test files with .test.ts suffix
Imports: ES module style, include .js extension, group imports logically
Error Handling: Use TypeScript's strict mode, explicit error checking in tests
Formatting: 2-space indentation, semicolons required, single quotes preferred
Testing: Co-locate tests with source files, use descriptive test names
Comments: JSDoc for public APIs, inline comments for complex logic

Project Structure

/src: Source code with client, server, and shared modules
Tests alongside source files with .test.ts suffix
Node.js >= 18 required

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.

2mo ago First seen · 25 lines · 270 tokens per session scan A dec0d881d693

Subscribe to this mod's changes

codebase-mcp CLAUDE.md is an instructions file published in the GitHub repository DeDeveloper23/codebase-mcp (85 stars, last pushed 1y ago), licensed MIT. It adds 270 tokens to every session, about $0.0011 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.

codebase-mcp CLAUDE.md next to 6 instructions from other repositories
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codebase-mcp: Instructions file for Claude Code