TETSU

Connect AI Assistants to Tetsu

Tetsu ships a Model Context Protocol (MCP) server, so Claude, ChatGPT and any MCP-compatible assistant can read your training data and log workouts, meals and weigh-ins for you. Ask “what did I bench last month?” in any AI chat — and get your real numbers.

Setup

Connect in three steps

  1. In the Tetsu app, open Settings → AI Assistants and tap Create connection. Your personal connector URL is copied to the clipboard.
  2. In Claude: Settings → Connectors → Add custom connector, paste the URL. In ChatGPT: enable developer mode connectors and paste the same URL.
  3. Ask away: “What are my current PRs?”, “Log 82 kg for today’s weigh-in”, “Log my push day: bench 4x8 at 80 kg, dips 3x12”.
Capabilities

What the assistant can do

Read workouts, exercise history & PRsread Read nutrition log & body weight trendread Read today’s planned routineread Log meals with macroswrite Log body weightwrite Log complete workouts, matched to the exercise librarywrite
Answers

Common questions

What can the AI assistant do once connected?

Read your workouts, per-exercise history, personal records, nutrition log, body weight trend and today’s routine — and write on your behalf: log meals, body-weight entries and complete workouts. Ten tools in total.

Is my data safe?

The connection uses a personal access token that only you hold — Tetsu stores a hash, never the token itself. Every request is scoped to your account, rate-limited, and you can revoke the token any time from the app.

Which AI apps work with it?

Anything that speaks MCP over Streamable HTTP: Claude (custom connectors), ChatGPT (developer-mode connectors), Claude Code, Cursor, Windsurf and most MCP-compatible agents.

Does it cost anything?

No — the MCP connection is included with every Tetsu account while the feature is in beta.

Track it in Tetsu

The connection token is minted in the app: Settings → AI Assistants. Free to start.

Get TetsuTry the live demo