Borrowing it
Nothing to install: this file belongs to TuanLdv/mcp-openapi-server-demo. 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/TuanLdv/mcp-openapi-server-demo/master/CLAUDE.mdgit clone --depth 1 https://github.com/TuanLdv/mcp-openapi-server-demoWrote 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/tuanldv/mcp-openapi-server-demo/claude-md)<a href="https://agentmods.dev/instructions/tuanldv/mcp-openapi-server-demo/claude-md"><img src="https://agentmods.dev/badge/instructions/tuanldv/mcp-openapi-server-demo/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 | $0.01931 | $0.01931 |
| Opus 5 | $0.00966 | $0.00966 |
| Sonnet 5 | $0.00386 | $0.00386 |
| Haiku 4.5 | $0.00193 | $0.00193 |
Grade A, and why
mcp-openapi-server-demo 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.
This is a copy
100% identical to mcp-openapi-server CLAUDE.md — 0 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 — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenSpec Instructions
These instructions are for AI assistants working in this project.
Always open @/openspec/AGENTS.md when the request:
- Mentions planning or proposals (words like proposal, spec, change, plan)
- Introduces new capabilities, breaking changes, architecture shifts, or big performance/security work
- Sounds ambiguous and you need the authoritative spec before coding
Use @/openspec/AGENTS.md to learn:
- How to create and apply change proposals
- Spec format and conventions
- Project structure and guidelines
Keep this managed block so 'openspec update' can refresh the instructions.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
This is an MCP (Model Context Protocol) server that exposes OpenAPI endpoints as MCP tools. It allows LLMs to discover and interact with REST APIs defined by OpenAPI specifications through the MCP protocol.
Essential Development Commands
Building and Testing
npm run build # Build TypeScript using esbuild
npm test # Run all tests with Vitest
npm test -- api-client.test.ts # Run specific test file
npm run test:watch # Run tests in watch mode
npm run test:coverage # Generate coverage report
Development Workflow
npm run dev # Watch mode with auto-rebuild
npm run inspect-watch # Debug mode with auto-reload (starts MCP inspector)
npm run typecheck # TypeScript type checking only (no build)
npm run lint # Run ESLint
npm run lint:fix # Auto-fix linting issues
Common Pitfall
Never try to run test scripts from command line using node -e - this will always fail. Write a TypeScript test file, build it, and execute it, or use the test runner with npm test.
Architecture & Key Concepts
Core Components
The codebase has a layered architecture:
OpenAPIServer (server.ts)
↓ uses
ToolsManager (tools-manager.ts) → manages tool filtering & lookup
↓ uses
OpenAPISpecLoader (openapi-loader.ts) → parses specs & creates tools
↓ uses
ApiClient (api-client.ts) → executes HTTP requests
↓ uses
AuthProvider (auth-provider.ts) → handles authentication
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 · 216 lines · 1,931 tokens per session scan A c45c9b2ff748
mcp-openapi-server-demo CLAUDE.md is an instructions file published in the GitHub repository TuanLdv/mcp-openapi-server-demo (0 stars, last pushed 15d ago), licensed MIT. It adds 1,931 tokens to every session, about $0.0097 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mcp-openapi-server CLAUDE.md, differing in 0 lines, and is treated as a copy.
Other instructions, from other repositories
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).
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AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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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.
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).
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.