# @three-ws/tutor-mcp > three.ws Pay-As-You-Learn tutor ledger from any AI agent — read a learning session's itemized running tab and close it for an attested invoice. Free, no key, no signer; answering questions is the paid action handled elsewhere. @three-ws/tutor-mcp is a Model Context Protocol server from three.ws. Install: `npx -y @three-ws/tutor-mcp`. ## Docs - [README](https://github.com/nirholas/ai-tutor-mcp/blob/main/README.md): install, configuration, full reference - [Documentation site](https://nirholas.github.io/ai-tutor-mcp/): the README as a web page - [Full text for LLMs](https://nirholas.github.io/ai-tutor-mcp/llms-full.txt): README inlined - [AGENTS.md](https://github.com/nirholas/ai-tutor-mcp/blob/main/AGENTS.md): guidance for coding agents ## Project - [Source](https://github.com/nirholas/ai-tutor-mcp) - [npm](https://www.npmjs.com/package/@three-ws/tutor-mcp) - [three.ws](https://three.ws): the platform this is part of - [Issues](https://github.com/nirholas/ai-tutor-mcp/issues) - [MCP Registry](https://registry.modelcontextprotocol.io/?q=io.github.nirholas%2Ftutor-mcp)