Borrowing it
Nothing to install: this file belongs to XavierBeheydt/mcp-kraken. 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/XavierBeheydt/mcp-kraken/main/CLAUDE.mdgit clone --depth 1 https://github.com/XavierBeheydt/mcp-krakenWrote 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/xavierbeheydt/mcp-kraken/claude-md)<a href="https://agentmods.dev/instructions/xavierbeheydt/mcp-kraken/claude-md"><img src="https://agentmods.dev/badge/instructions/xavierbeheydt/mcp-kraken/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/xavierbeheydt/mcp-kraken/claude-md"><img src="https://agentmods.dev/badge/instructions/xavierbeheydt/mcp-kraken/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 | $0.01688 | $0.01688 |
| Opus 5 | $0.00844 | $0.00844 |
| Sonnet 5 | $0.00338 | $0.00338 |
| Haiku 4.5 | $0.00169 | $0.00169 |
Grade A, and why
mcp-kraken 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 10d 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 — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project guidance — mcp-kraken
This file is the canonical project brief for Claude (and humans). Read it before making changes; keep it under 300 lines.
What this project is
An MCP server that wraps the Kraken Spot REST API and exposes it over HTTP with bearer-token authentication, plus a CLI for managing those bearer tokens. Built on FastMCP. Single process, stateless beyond a SQLite token store.
WebSocket v2 and FIX are explicitly out of scope for v1 — they live in
TODO.md.
Stack
- Python 3.12+ (CI matrix tests 3.12 and 3.13)
- Dependency manager: uv (
uv add,uv sync,uv run) - Build backend: hatchling + hatch-vcs — version is derived from the
git tag (
vX.Y.Z→X.Y.Z). Never hand-edit a version field. - HTTP framework: FastMCP (streamable HTTP transport)
- HTTP client: httpx (async)
- Validation/config: pydantic + pydantic-settings
- CLI: typer + rich
- Tests: pytest + pytest-asyncio + respx (httpx mocks)
- Quality: ruff (lint + format), mypy (strict)
- Container: multi-stage Dockerfile, non-root uid 10001, distroless-style runtime
Layout
src/mcp_kraken/
├── __init__.py __main__.py cli.py config.py logging.py server.py
├── auth/ # bearer-token store (SQLite), FastMCP TokenVerifier
├── kraken/ # async REST client, HMAC signing, errors, permission map
└── tools/ # MCP tool registrations, one module per Kraken category
tests/ # pytest; uses respx to mock httpx
docker/ # Dockerfile (build context is repo root)
.github/workflows/ # test.yml, dev-publish.yml, release.yml
Source files live at src/mcp_kraken/ (src layout). Docker files in docker/.
Common commands
just sync # uv sync --all-extras --dev
just check # ruff + format-check + mypy + pytest (= what CI runs)
just test # pytest
just fix # auto-fix lint + reformat
just serve # plain HTTP on :8765/mcp
just serve-https # HTTPS using ./certs/{key,cert}.pem
just serve-stdio # stdio transport (for local Claude Desktop / uvx)
just cert-local # mkcert: generates locally-trusted TLS certs
just docker-build # local image build (tagged :dev)
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.
- 10d ago First seen · 150 lines · 1,688 tokens per session scan A 54bb69576fdc
mcp-kraken CLAUDE.md is an instructions file published in the GitHub repository XavierBeheydt/mcp-kraken (1 stars, last pushed 2mo ago), licensed MIT. It adds 1,688 tokens to every session, about $0.0084 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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