Borrowing it
Nothing to install: this file belongs to altrr2/yandex-tools-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/altrr2/yandex-tools-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/altrr2/yandex-tools-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/altrr2/yandex-tools-mcp/claude-md)<a href="https://agentmods.dev/instructions/altrr2/yandex-tools-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/altrr2/yandex-tools-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/altrr2/yandex-tools-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/altrr2/yandex-tools-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 | $0.02421 | $0.02421 |
| Opus 5.5 | $0.00968 | $0.00968 |
| Sonnet 5.5 | $0.00484 | $0.00484 |
| Haiku 4.5 | $0.00242 | $0.00242 |
Grade A, and why
yandex-tools-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 5d 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 — 198 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
Monorepo containing five MCP (Model Context Protocol) servers for Yandex APIs:
- yandex-search-mcp: Web search optimized for Russian/Cyrillic content
- yandex-wordstat-mcp: Keyword research and search trend analysis (Wordstat v2 via the Yandex Cloud Search API)
- yandex-webmaster-mcp: Site analytics, indexing status, and SEO diagnostics
- yandex-metrika-mcp: Web analytics, traffic data, and visitor insights
- yandex-direct-mcp: PPC campaign management — campaigns, ad groups, ads, keywords, bids, statistics (the only server with real-money writes)
Commands
# Install dependencies (from root)
bun install
# Code quality
bun run lint # Check code style with Biome
bun run lint:fix # Fix linting issues
bun run format # Format code
# Run servers locally (for testing)
YANDEX_SEARCH_API_KEY=key YANDEX_FOLDER_ID=folder node packages/yandex-wordstat-mcp/src/index.mjs
YANDEX_SEARCH_API_KEY=key YANDEX_FOLDER_ID=folder node packages/yandex-search-mcp/src/index.mjs
YANDEX_WEBMASTER_TOKEN=token node packages/yandex-webmaster-mcp/src/index.mjs
YANDEX_METRIKA_TOKEN=token node packages/yandex-metrika-mcp/src/index.mjs
YANDEX_DIRECT_TOKEN=token node packages/yandex-direct-mcp/src/index.mjs # defaults to sandbox; YANDEX_DIRECT_LIVE=1 for production
# Publish packages
cd packages/yandex-wordstat-mcp && npm publish
cd packages/yandex-search-mcp && npm publish
cd packages/yandex-webmaster-mcp && npm publish
cd packages/yandex-metrika-mcp && npm publish
cd packages/yandex-direct-mcp && npm publish
Architecture
Tech Stack
- Node.js >= 18.0.0
- Bun package manager (monorepo workspaces)
- Pure ES Modules (no TypeScript, no build step)
- Biome for linting/formatting
Package Structure
packages/
├── yandex-search-mcp/src/index.mjs # Single-file MCP server (1 tool: search)
├── yandex-wordstat-mcp/
│ ├── src/
│ │ ├── index.mjs # MCP server (5 tools)
│ │ └── convert.mjs # Pure v2 wire-format conversion helpers
│ └── test/
│ └── conversions.test.mjs # bun test for convert.mjs
├── yandex-webmaster-mcp/
│ └── src/
│ ├── index.mjs # MCP server (34 tools)
│ └── auth.mjs # OAuth token exchange flow
├── yandex-metrika-mcp/
│ └── src/
│ ├── index.mjs # MCP server (44 tools)
│ └── auth.mjs # OAuth token exchange flow
└── yandex-direct-mcp/ # Multi-file (unlike siblings): ~18 tools split by resource
└── src/
├── index.mjs # Thin entry: CLI dispatch, build client, register tool groups
├── auth.mjs # OAuth token exchange flow
├── client.mjs # v5 directRequest + Reports reportRequest + Live4 liveV4Request
├── money.mjs # toMicro/fromMicro (micro-unit conversion)
├── format.mjs # summarizeResults (mutation result formatter), today()
└── tools/ # campaigns, adgroups, ads, keywords, reports, account
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.
- 5d ago First seen · 198 lines · 2,421 tokens per session scan A 187f71cae0c3
yandex-tools-mcp CLAUDE.md is an instructions file published in the GitHub repository altrr2/yandex-tools-mcp (65 stars, last pushed 3mo ago), licensed MIT. It adds 2,421 tokens to every session, about $0.0097 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 2026-10-13.
Other instructions, from other repositories
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.