Borrowing it
Nothing to install: this file belongs to Cladios34/mtg-mcp-server. 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/Cladios34/mtg-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/Cladios34/mtg-mcp-serverWrote 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/cladios34/mtg-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/cladios34/mtg-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/cladios34/mtg-mcp-server/claude-md.svg" alt="Measured on agentmods" 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 | $0.05251 | $0.05251 |
| Opus 5 | $0.02625 | $0.02625 |
| Sonnet 5 | $0.01050 | $0.01050 |
| Haiku 4.5 | $0.00525 | $0.00525 |
Grade A, and why
mtg-mcp-server 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 7d 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.
MTG MCP Server
Unified MCP server providing Magic: The Gathering data to AI assistants. Composes Scryfall, Commander Spellbook, 17Lands, and EDHREC into one server using FastMCP 3.x's provider/mount architecture.
Stack
Python 3.12+ · FastMCP 3.2.x · httpx · Pydantic v2 · structlog Tooling: mise · uv · ruff · ty · pytest · respx
Prerequisites: mise must be installed. Then mise install gets everything else.
Commands
mise run setup # Install deps, create venv
mise run check # Quality gate: lint + typecheck + all tests except live
mise run check:quick # Fast gate: lint + typecheck + only tests affected by recent changes
mise run check:full # Complete gate: lint + typecheck + all tests INCLUDING live
mise run test # All tests except live, with coverage
mise run test:quick # Only tests affected by recent changes (fastest iteration)
mise run test:unit # Unit tests only (services + providers)
mise run test:integration # Integration tests (fixture-mocked, cross-component)
mise run test:live # Live smoke tests (real server + real APIs, ~60s)
mise run lint # ruff check + ruff format --check
mise run typecheck # ty check
mise run dev # fastmcp dev inspector (MCP Inspector on :6274)
mise run serve # Run server via stdio
mise run fix # Auto-fix lint and format issues
Testing strategy
Four test tiers, ordered by speed. Use the fastest tier that covers your change:
| Tier | Command | Speed | When to use |
|---|---|---|---|
| Quick | mise run test:quick |
~5s* | Active iteration — only runs tests affected by your changes (pytest-testmon) |
| Integration | mise run test:integration |
~2s | Cross-component verification — full orchestrator with fixture-mocked backends |
| Unit | mise run test:unit |
~2.5min | Focused component testing — services + providers only |
| Live | mise run test:live |
~1-2min | Real-world smoke test — starts real server, hits real APIs |
| Fast gate | mise run check:quick |
~10s* | Quick validation — lint + typecheck + affected tests only |
| Quality gate | mise run check |
~3min | Before commits — lint + typecheck + all tests except live |
| Complete gate | mise run check:full |
~4-5min | Maximum confidence — full gate + live smoke tests. CI runs this on PRs |
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.
- 7d ago First seen · 198 lines · 5,251 tokens per session scan A 40d6166901b3
mtg-mcp-server CLAUDE.md is an instructions file published in the GitHub repository Cladios34/mtg-mcp-server (0 stars, last pushed 1mo ago), licensed MIT. It adds 5,251 tokens to every session, about $0.0263 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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