Borrowing it
Nothing to install: this file belongs to YoshitakaArakawa/tableau-mcp-apps-lab. 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/YoshitakaArakawa/tableau-mcp-apps-lab/main/CLAUDE.mdgit clone --depth 1 https://github.com/YoshitakaArakawa/tableau-mcp-apps-labWrote 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/yoshitakaarakawa/tableau-mcp-apps-lab/claude-md)<a href="https://agentmods.dev/instructions/yoshitakaarakawa/tableau-mcp-apps-lab/claude-md"><img src="https://agentmods.dev/badge/instructions/yoshitakaarakawa/tableau-mcp-apps-lab/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/yoshitakaarakawa/tableau-mcp-apps-lab/claude-md"><img src="https://agentmods.dev/badge/instructions/yoshitakaarakawa/tableau-mcp-apps-lab/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 | $0.02699 | $0.02699 |
| Opus 5 | $0.01350 | $0.01350 |
| Sonnet 5 | $0.00540 | $0.00540 |
| Haiku 4.5 | $0.00270 | $0.00270 |
Grade A, and why
tableau-mcp-apps-lab 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 9d 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.
This is a copy
91% identical to tableau-mcp CLAUDE.md — 40 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 312 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.
Build & Development Commands
Building
npm run build # Production build (minified, bundled)
npm run build:dev # Development build (external packages, debug logging)
npm run build:desktop # Desktop variant build
npm run build:combined # Combined variant build
npm run build:docker # Build Docker image
Running the Server
npm run start:http # Start HTTP server (default port 3927)
npm run start:http:apm # Start with APM telemetry tracing enabled
npm run start:http:docker # Run via Docker container
Testing
npm test # Unit tests (src/**/*.test.ts)
npm run test:e2e # End-to-end tests
npm run test:eval # Evaluation tests
npm run test:oauth:embedded # OAuth embedded tests
npm run test:oauth:tableau # OAuth Tableau tests (Playwright)
npm run coverage # Unit test coverage report
Linting & Formatting
npm run lint # Run ESLint
npm run lint:fix # Auto-fix ESLint issues
MCP Inspector
npm run inspect # Build + inspect with MCP Inspector (stdio)
npm run inspect:http # Run HTTP server + inspector
npm run inspect:docker # Build Docker + inspect
Running Individual Tests
npx vitest run src/path/to/file.test.ts # Run specific unit test
npx vitest run src/path/to/file.test.ts -t "pattern" # Run tests matching pattern
npx playwright test tests/oauth/tableau-authz # Run specific Playwright test
Architecture
Build Variants
The project supports multiple build variants via src/scripts/build.ts:
- default: Standard HTTP/stdio server
- desktop: Desktop-specific variant with ext-apps integration
- combined: Both web and desktop tools
Build variants use esbuild with conditional code via globalIdentifiers to customize the final bundle.
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.
- 9d ago First seen · 312 lines · 2,699 tokens per session scan A d597aa9c1ff4
tableau-mcp-apps-lab CLAUDE.md is an instructions file published in the GitHub repository YoshitakaArakawa/tableau-mcp-apps-lab (1 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 2,699 tokens to every session, about $0.0135 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to tableau-mcp CLAUDE.md, differing in 40 lines, and is treated as a copy.
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