Zensei

What is Zensei MCP Zensei MCP gives your AI agent today's Zensei Index: a 0-100 risk score for the US stock market.

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What it can do

  • Zensei Index About: What the Zensei Index is, how to read the score, how it is built, and what this server serves. Same wording as the website FAQ. Call it once before interpreting any score.
  • Zensei Index Today: Today's Zensei Index for U.S. equities: the final score, its regime label, and the three layer scores (structural conditions, tactical filters, regime confirmations). The Zensei In
  • Zensei Index Indicators: The ten indicators behind today's Zensei Index, each with its current status, the layer it scores into, its weight in that layer, and the same explanation the website shows. U

What data it sees

Do you need an account

No: the server works without sign-in

What is Zensei MCP

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

How to connect

How to connect Zensei to Claude

The server address to paste into Claude settings:

https://zensei.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Zensei to ChatGPT

The server address to paste into ChatGPT settings:

https://zensei.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Zensei to Cursor

The server address to paste into Cursor settings:

https://zensei.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (4)

Raw names from tools/list. Only developers need these.

zensei_index_aboutWhat the Zensei Index is, how to read the score, how it is built, and what this server serves. Same wording as the website FAQ. Call it once before interpreting any score.
zensei_index_todayToday's Zensei Index for U.S. equities: the final score, its regime label, and the three layer scores (structural conditions, tactical filters, regime confirmations). The Zensei Index is a RISK score from 0 to 100: LOWER IS HEALTHIER. 0-20 Supportive, 20-40 Vulnerable, 40-70 Stressed, 70-100 Restrictive. A rising score means conditions are deteriorating, not improving. Call zensei_index_indicators to see why the score sits where it does.
zensei_index_indicatorsThe ten indicators behind today's Zensei Index, each with its current status, the layer it scores into, its weight in that layer, and the same explanation the website shows. Use it to explain why the index sits where it does. Indicator statuses run from healthiest to most stressed: Clear or Inactive (no stress), Watch (early warning), Stress (confirmed stress), Activated or Danger (full signal). Calibrating means not enough data yet; Unknown means no data.
zensei_index_summaryThe latest written summary of the Zensei Index, with the score and regime it was written for. A summary is rewritten only when the indicators change. Check `stale` and `ageDays` before quoting it as today's view, and prefer zensei_index_today for the current number. The Zensei Index is a RISK score from 0 to 100: LOWER IS HEALTHIER. 0-20 Supportive, 20-40 Vulnerable, 40-70 Stressed, 70-100 Restrictive. A rising score means conditions are deteriorating, not improving.