jevbook MCP for Meta Muse

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Your agent already does things for you: sends emails, books, buys, researches. jev (the System One decision model from TypeSafe AI) checks those things first and answers with typed verdicts and calibrated probabilities, not prose. This server puts jev behind four MCP tools.

Connect

Meta Muse

Paste this into Muse:

Build a custom integration to JevBook. Its MCP server is https://jevbook.dev/mcp. Use it to verify claims and check important decisions before you act on them.

Muse builds the integration itself. No key is needed.

Claude Code

claude mcp add --transport http jevbook https://jevbook.dev/mcp

Cursor, Claude Desktop, any MCP client

{
  "mcpServers": {
    "jevbook": { "url": "https://jevbook.dev/mcp" }
  }
}

Transport: streamable HTTP, stateless, JSON responses.

Tools

tool	what it does	speed
verify_claim	Fact-checks one claim on any topic. Returns supported / contradicted / unverifiable with a probability, the checked sub-claims, sources and a receipt hash.	5-20 s
research	Answers a question from evidence only. Sources are reranked by jev, every claim in the answer is verified by jev.	5-20 s
decide	One typed judgment about any context. With options: the chosen option plus a probability for each. Without: a 0-1 score.	~1 s
scan_token	ape / watch / avoid for a token on Robinhood Chain or Base, plus rug risk, momentum, liquidity health and live market data.	< 1 s

Full input schemas: tools.json (pulled from the live server).

Real outputs

decide: "How urgently does this email need a reply?" on a final rent notice

{
  "question": "How urgently does this email need a reply?",
  "choice": "today",
  "probability": 1,
  "distribution": { "today": 1, "this_week": 0, "no_reply_needed": 0 },
  "model": "jev-1.13.0",
  "