Borrowing it
Nothing to install: this file belongs to mrkhachaturov/ya-metrics-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-metrics-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/mrkhachaturov/ya-metrics-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-metrics-mcp/claude-md)<a href="https://agentmods.dev/instructions/mrkhachaturov/ya-metrics-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mrkhachaturov/ya-metrics-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-metrics-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mrkhachaturov/ya-metrics-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 | $0.01125 | $0.01125 |
| Opus 5 | $0.00562 | $0.00562 |
| Sonnet 5 | $0.00225 | $0.00225 |
| Haiku 4.5 | $0.00112 | $0.00112 |
Grade A, and why
ya-metrics-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 — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ya-metrics-mcp
MCP server for Yandex Metrika analytics. FastMCP server with mixin-based domain fetchers exposing 31 tools via stdio/HTTP transports.
Commands
# Install deps (including dev)
uv sync --extra dev
# Run tests
uv run pytest
# Run tests with output
uv run pytest -v
# Lint
uv run ruff check src/
# Type check
uv run mypy src/
# Run the server (stdio)
YANDEX_API_KEY=your_token uv run ya-metrics-mcp
# Run with HTTP transport
YANDEX_API_KEY=your_token uv run ya-metrics-mcp --transport streamable-http --port 8000
# CLI help
uv run ya-metrics-mcp --help
Architecture
src/ya_metrics_mcp/
├── __init__.py # Click CLI entry point (main())
├── exceptions.py # MCPYaMetrikaError, AuthenticationError
├── metrika/
│ ├── config.py # YaMetrikaConfig — loaded from env vars
│ ├── client.py # YaMetrikaClient — async httpx with retry
│ └── fetchers/
│ ├── base.py # BaseFetcher: holds client, format_response()
│ ├── traffic.py # TrafficMixin (9 methods: +list_counters, +list_goals)
│ ├── content.py # ContentMixin (5 methods)
│ ├── demographics.py # DemographicsMixin (4 methods)
│ ├── geographic.py # GeographicMixin (2 methods)
│ ├── performance.py # PerformanceMixin (4 methods)
│ ├── advanced.py # AdvancedMixin (7 methods: +get_drilldown, +compare_segments, +compare_segments_drilldown)
│ └── fetcher.py # YaMetrikaFetcher — all mixins combined
├── servers/
│ ├── main.py # FastMCP instance + main_lifespan()
│ ├── context.py # MainAppContext dataclass
│ ├── dependencies.py # get_metrika_fetcher(ctx) DI helper
│ └── tools.py # @mcp.tool() registrations (all 31 tools)
└── utils/
├── date.py # validate_date(), default_date_range()
├── decorators.py # @handle_api_errors() — wraps exceptions
├── logging.py # setup_logging(), mask_sensitive()
├── lifecycle.py # setup_signal_handlers()
└── tools.py # filter_tools() — READ_ONLY_MODE / ENABLED_TOOLS
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 · 105 lines · 1,125 tokens per session scan A d8aa4ecdd96f
ya-metrics-mcp CLAUDE.md is an instructions file published in the GitHub repository mrkhachaturov/ya-metrics-mcp (2 stars, last pushed 6mo ago), licensed MIT. It adds 1,125 tokens to every session, about $0.0056 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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