Borrowing it
Nothing to install: this file belongs to richashworth/tlaplus-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/richashworth/tlaplus-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/richashworth/tlaplus-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/richashworth/tlaplus-mcp/claude-md)<a href="https://agentmods.dev/instructions/richashworth/tlaplus-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/richashworth/tlaplus-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/richashworth/tlaplus-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/richashworth/tlaplus-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 | $0.00701 | $0.00701 |
| Opus 5 | $0.00351 | $0.00351 |
| Sonnet 5 | $0.00140 | $0.00140 |
| Haiku 4.5 | $0.00070 | $0.00070 |
Grade A, and why
tlaplus-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 8d 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 — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
MCP server exposing TLA+ formal verification tools (TLC, SANY, PlusCal, TLATeX) as structured JSON over the Model Context Protocol.
Release
npm version patch # or minor / major — bumps version, commits, tags
git push --tags # triggers publish workflow → publishes to @richashworth/tlaplus-mcp on npm
Build & Test
npm run build # TypeScript compilation
npm run dev # Watch mode
npm test # All tests (vitest)
npm start # Run compiled server (stdio transport)
Run specific test suites:
npx vitest run src/integration.test.ts
npx vitest run src/parsers/
npx vitest run src/tools/
npx vitest run src/lib/
Project Structure
src/index.ts— Entry point (stdio transport, graceful shutdown)src/server.ts— Server factory, registers all 9 tools + resourcessrc/lib/— Core infra: Java detection, subprocess spawning, config, schemas, shared helperssrc/parsers/— Output parsers for TLC stdout, TLA+ values, DOT graphs, CFG filessrc/tools/— 9 MCP tool handlers (tlc_check, tlc_simulate, tla_parse, tla_evaluate, pcal_translate, tlc_coverage, tla_state_graph, tlc_generate_trace_spec, tla_tex)src/resources/— MCP resources (spec listing, file reading, latest output)src/test-utils.ts— Shared test utilities (captureToolHandler, mockRunJavaResult)
Conventions
- TypeScript strict mode, ES modules, target ES2022, Node 18+
- Files: kebab-case. Types/Interfaces: PascalCase. Functions/vars: camelCase. Tool names: snake_case.
- Tests live alongside source files (
*.test.ts) and are excluded from the build - All tool handlers use
formatToolResponse()/formatToolError()fromsrc/lib/tool-helpers.ts - Tool registration follows:
export function registerToolName(server: McpServer): void - Zod schemas for parameter validation;
absolutePathschema enforces absolute paths - ESLint + Prettier enforced via pre-commit hook (husky + lint-staged) and CI
- Run
npm run lint:fix && npm run formatto fix issues locally
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.
- 8d ago First seen · 65 lines · 701 tokens per session scan A ac041f2aa149
tlaplus-mcp CLAUDE.md is an instructions file published in the GitHub repository richashworth/tlaplus-mcp (1 stars, last pushed 3mo ago), licensed MIT. It adds 701 tokens to every session, about $0.0035 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.