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Zensei MCP gives your AI agent today's Zensei Index: a 0-100 risk score for the US stock market. Connect Claude, Cursor or any MCP client and ask "What market regime are we in today, and why?". The agent calls the server and reasons about the answer.

The server is free, public and read-only. It needs no account and no API key. Transport is Streamable HTTP.

How to read the score

The Zensei Index measures risk, not strength. Lower is healthier.

Score	Regime
0-20	Supportive
20-40	Vulnerable
40-70	Stressed
70-100	Restrictive

Every tool repeats this note so the assistant does not invert it.

Tools

All tools are read-only and take no arguments.

• zensei_index_about — What the index is, how to read the 0-100 score, and how it is built.
• zensei_index_today — Today's final score, its regime label, and the three layer scores: structural, filter, confirmation.
• zensei_index_indicators — The ten indicators behind the score, each with its current status, group, weight and explanation.
• zensei_index_summary — The latest written market summary, with its date and a stale flag when it is more than three days old.

Resources

• zensei://index/about — The explainer as a Markdown document.

Connect

Claude Code

claude mcp add --transport http zensei-index https://www.zensei.com/mcp

Claude app — Settings → Connectors → Add custom connector. Name it Zensei Index and paste the URL.

Cursor — add to .cursor/mcp.json:

{
  "mcpServers": {
    "zensei-index": { "url": "https://www.zensei.com/mcp" }
  }
}

Any client — call a tool directly with JSON-RPC:

curl -X POST https://www.zensei.com/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"zensei_index_today","arguments":{}}}'

Example reply

{
  "observationDate": "2026-10-03",
  "final": 34.5,
  "regime": "Vulnerable",
  "layers": { "structural": 41.2, "filter": 0, "confirmation": 30 }
}

Live values change with the market.

Limits

• Serves today only. No history, no chart data. Those live at https://www.zensei.com/index.
• Public endpoint. Cache the answer for a few minutes rather than polling.
• Zensei is an analytics tool, not a registered investment adviser. Nothing the server returns is investment advice.

Links

• Docs: https://www.zensei.com/mcp
• Index dashboard: https://www.zensei.com/index