Borrowing it
Nothing to install: this file belongs to mrkhachaturov/ya-reviews-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/mrkhachaturov/ya-reviews-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/mrkhachaturov/ya-reviews-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/mrkhachaturov/ya-reviews-mcp/claude-md)<a href="https://agentmods.dev/instructions/mrkhachaturov/ya-reviews-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mrkhachaturov/ya-reviews-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/mrkhachaturov/ya-reviews-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mrkhachaturov/ya-reviews-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 | $0.01332 | $0.01332 |
| Opus 5 | $0.00666 | $0.00666 |
| Sonnet 5 | $0.00266 | $0.00266 |
| Haiku 4.5 | $0.00133 | $0.00133 |
Grade A, and why
ya-reviews-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 11d 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 — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ya-reviews-mcp
MCP server that scrapes Yandex Maps business reviews via headless browser. Supports multiple backends: Playwright (default), Patchright (anti-detection), Remote CDP.
Commands
| Command | Description |
|---|---|
uv sync --extra dev |
Install all dependencies (including dev) |
uv run playwright install chromium |
Install Chromium (required before first run) |
uv sync --extra patchright |
Install with Patchright backend |
uv run patchright install chromium |
Install Chromium for Patchright |
uv run ya-reviews-mcp |
Run server (stdio transport, Playwright default) |
uv run ya-reviews-mcp --backend patchright |
Run with Patchright backend |
uv run ya-reviews-mcp --backend remote --browser-url ws://localhost:9222 |
Run with remote browser |
uv run ya-reviews-mcp --transport streamable-http --port 8000 |
Run with HTTP transport |
uv run pytest |
Run tests |
uv run ruff check src/ |
Lint |
uv run ruff format src/ |
Format |
uv run mypy src/ |
Type check (strict mode) |
Architecture
src/ya_reviews_mcp/
__init__.py # CLI entry point (Click command)
exceptions.py # Exception hierarchy: MCPYaReviewsError → Scraping/PageNotFound/Browser
reviews/
config.py # YaReviewsConfig — env-based settings dataclass
models.py # Pydantic models: Review, CompanyInfo, ReviewsResult
scraper.py # YaReviewsScraper — backend-agnostic DOM parsing
backends/
__init__.py # BackendType enum + create_backend() factory (lazy imports)
base.py # BaseBrowserBackend ABC (start, close, new_context, handles_stealth)
playwright_backend.py # Standard Playwright backend
patchright_backend.py # Anti-detection Patchright fork (handles_stealth=True)
remote_backend.py # Remote CDP via WebSocket (auto-discovers debugger URL)
fetchers/
base.py # BaseFetcher — JSON response formatting
reviews.py # ReviewsMixin — business logic (get_reviews, get_company_info, get_company_summary)
fetcher.py # YaReviewsFetcher — composite of Base + ReviewsMixin
servers/
main.py # FastMCP instance + lifespan (browser lifecycle)
tools.py # @mcp.tool registrations (3 tools)
context.py # MainAppContext dataclass
dependencies.py # Dependency injection helper
utils/
decorators.py # handle_scraper_errors decorator
lifecycle.py # Signal handlers (SIGTERM/SIGINT)
logging.py # Verbosity-based logging setup
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.
- 11d ago First seen · 102 lines · 1,332 tokens per session scan A 639f7b1ec8d5
ya-reviews-mcp CLAUDE.md is an instructions file published in the GitHub repository mrkhachaturov/ya-reviews-mcp (3 stars, last pushed 6mo ago), licensed MIT. It adds 1,332 tokens to every session, about $0.0067 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 2026-08-31.
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