What is ghostlink CLAUDE.md?

A project instruction file for Claude Code, an AI coding assistant, working on GhostLink. GhostLink is a local MCP server that gives coding agents controlled access to repository and Git operations on macOS.

Use it when developing or reviewing GhostLink. It explains how to install, build, test, lint, type-check, and run the project, along with where its main source code is organized.

It gives the assistant the project's commands, architecture, design patterns, and required verification checks. This reduces the chance of making changes that do not fit the repository or pass its checks.

How bgorzelic/ghostlink configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to bgorzelic/ghostlink. 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/bgorzelic/ghostlink/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/bgorzelic/ghostlink

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/bgorzelic/ghostlink/claude-md/github.svg)](https://agentmods.dev/instructions/bgorzelic/ghostlink/claude-md)

Your own site

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

Per session 1,295 This file is loaded in full into every session.

When invoked 1,295 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	$0.01295	$0.01295
Opus 5.5	$0.00518	$0.00518
Sonnet 5.5	$0.00259	$0.00259
Haiku 4.5	$0.00129	$0.00129

Measured 1mo ago against content hash 1ac8f5db926b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ghostlink 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 · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@AGENTS.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project

GhostLink is a local-first MCP server (STDIO) for agentic coding workflows on macOS. It exposes deterministic, policy-gated tools (repo + git + curated commands) via structured JSON envelopes.

Current phase: Phase 1 -- Local STDIO (shipped as v0.1.0). Phase 2 (remote transport) and Phase 3 (agent runtime) are designed but not yet built.

Commands

npm install          # install dependencies
npm run dev          # dev server with watch mode
npm run build        # compile TypeScript to dist/
npm start            # run compiled server (STDIO)
npm test             # run full test suite (vitest, 108 tests)
npm run lint         # ESLint
npm run typecheck    # tsc --noEmit

Single test file: npx vitest run tests/core/tools/repo-search.test.ts Single test by name: npx vitest run -t "returns deterministic envelope"

Verification gate (run after every code change):

npm test && npm run lint && npm run typecheck && npm run build

Architecture

src/
  index.ts                     # Entry point (STDIO transport binding)
  server.ts                    # MCP server factory + tool registration (transport-agnostic)
  core/
    tools/                     # Tool implementations (one file per tool)
      repo-search.ts           # ripgrep-powered search
      repo-read-file.ts        # File read with size/binary guards
      repo-apply-patch.ts      # Pure JS unified diff with atomic rollback
      repo-run.ts              # Curated command runner (allowlist only)
      git-status.ts            # Normalized git status parser
      git-diff.ts              # Diff with sandbox validation + output caps
    policy/
      sandbox.ts               # Path canonicalization, traversal rejection, symlink escape detection
      commands.ts              # Command allowlist registry with per-command arg validation
    utils/
      envelope.ts              # ToolEnvelope builder (ok/error + provenance)
      process.ts               # Safe process spawning (shell:false only)
    logging/
      audit.ts                 # JSONL audit logger (stdout/file/off modes)
  types/
    tool-envelope.ts           # ToolEnvelope<T> type definition
tests/                         # Mirrors src/ structure (vitest)
docs/                          # Public documentation
templates/                     # Ready-to-use config templates for target projects

Read the full file on GitHub · 119 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 Changed · +2 lines · +5 tokens per session 1ac8f5db926b
2mo ago First seen · 117 lines · 1,290 tokens per session scan A c31ac6a0c8b8

Subscribe to this mod's changes

ghostlink CLAUDE.md is an instructions file published in the GitHub repository bgorzelic/ghostlink (0 stars, last pushed 1mo ago), licensed ISC. It adds 1,295 tokens to every session, about $0.0052 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.

Backend and APIs Git and workflow TypeScript ai-agents developer-tools mcp mcp-server sandbox

ghostlink CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ghostlink CLAUDE.mdbgorzelic/ghostlink	Instructions file	0	1mo ago	ISC	A	1,295	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

ghostlink: Instructions file for Claude Code