Borrowing it
Nothing to install: this file belongs to iiAtlas/hledger-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.
curl -O https://raw.githubusercontent.com/iiAtlas/hledger-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/iiAtlas/hledger-mcpWrote 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/iiatlas/hledger-mcp/claude-md)<a href="https://agentmods.dev/instructions/iiatlas/hledger-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/iiatlas/hledger-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.
<a href="https://agentmods.dev/instructions/iiatlas/hledger-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/iiatlas/hledger-mcp/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 | $0.00497 | $0.00497 |
| Opus 5 | $0.00249 | $0.00249 |
| Sonnet 5 | $0.00099 | $0.00099 |
| Haiku 4.5 | $0.00050 | $0.00050 |
Grade A, and why
hledger-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 10d 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 — 53 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
This is an HLedger MCP (Model Context Protocol) server implementation built with TypeScript. The project creates a bridge between HLedger accounting software and MCP-compatible applications using the Model Context Protocol SDK.
Commands
Building
npm run build- Compiles TypeScript to JavaScript and makes the output executable
Development
- Node.js version: v24.7.0 (specified in .nvmrc)
- Use
nvm useto set correct Node version
Architecture
Core Structure
- Entry Point:
src/index.ts- Main server implementation - Output:
build/index.js- Compiled executable with shebang - Binary: Available as
hledger-mcpcommand after build
Key Components
- MCP Server: Uses
@modelcontextprotocol/sdkfor Model Context Protocol implementation - Transport: StdioServerTransport for stdio-based communication
- Validation: Zod library for schema validation
- Configuration: Configurable via CLI flags for read/write behaviour
- Write Tools:
hledger_add_transaction,hledger_import,hledger_rewrite,hledger_remove_entry,hledger_replace_entry, andhledger_closeall write through temporary copies with optional backups - Read Tools: new commands such as
hledger_notesextend the reporting surface while reusing query + output-format helpers
Server Structure
The server is configured as:
- Name: "hledger-mcp"
- Version: "1.0.0"
- Capabilities: tooling plus resource discovery (we call
hledger filesand register every reported ledger as an MCP resource before the transport connects) - Transport: Stdio-based communication
The server runs on stdio and logs startup message to stderr to avoid interfering with the MCP protocol communication on stdout.
Runtime flags
--read-only: disable the add-transaction tool (all attempts return a validation error). Default: off.--skip-backup: skip creating.bakfiles when appending to an existing journal. Default: off.- Journal path remains the first non-flag argument; flags can be passed before or after it.
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.
- 10d ago First seen · 53 lines · 497 tokens per session scan A 0a34501a9ec2
hledger-mcp CLAUDE.md is an instructions file published in the GitHub repository iiAtlas/hledger-mcp (65 stars, last pushed 6mo ago), licensed MIT. It adds 497 tokens to every session, about $0.0025 per session on Opus 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.
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