What is mcp-ynab CLAUDE.md?

A set of instructions for working on the mcp-ynab code repository. It covers the repository guide, commands, architecture, and the Python MCP server in its src/ directory.

Use it when editing, reviewing, or navigating the mcp-ynab repository, especially its commands, architecture, and Python server code.

It gives an agent the project-specific rules and structure needed to work in that repository. The input does not specify more detailed behavior.

How pragprogrammer/mcp-ynab configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to pragprogrammer/mcp-ynab. 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/pragprogrammer/mcp-ynab/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/pragprogrammer/mcp-ynab

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/pragprogrammer/mcp-ynab/claude-md/github.svg)](https://agentmods.dev/instructions/pragprogrammer/mcp-ynab/claude-md)

Your own site

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

Per session 683 This file is loaded in full into every session.

When invoked 683 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 unknown 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	$0.00683	$0.00683
Opus 5.5	$0.00273	$0.00273
Sonnet 5.5	$0.00137	$0.00137
Haiku 4.5	$0.00068	$0.00068

Measured 2mo ago against content hash 9a3c8a010444, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-ynab 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.

CLAUDE.md · 37 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 37 lines · 683 tokens per session scan A 9a3c8a010444

Subscribe to this mod's changes

mcp-ynab CLAUDE.md is an instructions file published in the GitHub repository pragprogrammer/mcp-ynab (48 stars, last pushed 3mo ago), licensed AGPL-3.0. It adds 683 tokens to every session, about $0.0027 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.

mcp-ynab CLAUDE.md next to 6 instructions from other repositories
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mcp-ynab CLAUDE.mdpragprogrammer/mcp-ynab	Instructions file	48	3mo ago	AGPL-3.0	A	683	Claude Code
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mcp-ynab: Instructions file for Claude Code