io.github.nirholas/tutor-mcp
three.ws Tutor
Is the three.ws Tutor MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Read a Pay-As-You-Learn tutoring session's itemized tab and close it for an attested invoice.
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y @three-ws/tutor-mcp@0.1.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- tutor-mcp 0.1.2
- Capabilities
- tools
- Instructions
- 777 characters
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 780 tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 804. The o200k_base estimate is 477. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/nirholas/three.ws
- Website
- https://three.ws
- Registry
- active, updated 2026-10-10 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.64×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| load_session | 399 | 244 | 51 % |
| close_session | 381 | 233 | 49 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- three.ws Signals io.github.nirholas/signals-mcp · alive
- three.ws Solana Memo Media io.github.nirholas/solana-memo-media-mcp · alive
- $THREE Token io.github.nirholas/three-token-mcp · alive
- three.ws Avatars io.github.nirholas/threews-avatar · alive
- three.ws Vanity io.github.nirholas/vanity-mcp · alive
- three.ws Vision io.github.nirholas/vision-mcp · alive
- x402 Universal Payer io.github.nirholas/x402-bridge · crashed on start
- x402 Wallet io.github.nirholas/x402-mcp · alive
Servers that mention tutor.
- TutorPing ai.tutorping/tutorping · alive
- ai.smithery/arjunkmrm-tutorials · not found
- app.mhai/knihajizd · needs auth
- Scholarize: Study Plans, Citations, Quizzes & Flashcards com.0xpi.scholar/study-tools · alive
- dev.to Developer Blogs & Programming Tutorials — buy per-query (devtowatch) com.a2awire/data-developer-blog-programming-tutorial-community · alive
- Glushkov Modelling MCP com.glushkov-modelling/content · needs auth
- UK Legislation MCP Server from MCPBundles com.mcpbundles/uk-legislation · needs auth
- Programación Siemens — Blog y Cursos com.programacionsiemens/blog-cursos · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.