Nonlinear Calendar MCP server

Nonlinear Calendar is a remote MCP server that gives an AI agent 12 tools, among them activity_window, body_rhythm, date_lookup. It answers at https://balance-engine.vercel.app/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.

Nonlinear Calendar: this year’s months fold onto the previous 12 years. No key to try.

Description as the publisher wrote it.

The 12 tools Nonlinear Calendar offers

Add Nonlinear Calendar to your AI client

Every block below points at https://balance-engine.vercel.app/api/mcp. Pick your client and copy.

claude mcp add --transport http nonlinear-calendar https://balance-engine.vercel.app/api/mcp

{
  "mcpServers": {
    "nonlinear-calendar": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://balance-engine.vercel.app/api/mcp"]
    }
  }
}

{
  "mcpServers": {
    "nonlinear-calendar": {
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "servers": {
    "nonlinear-calendar": {
      "type": "http",
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "context_servers": {
    "nonlinear-calendar": {
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "nonlinear-calendar": {
      "serverUrl": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "nonlinear-calendar": {
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

name: Nonlinear Calendar
version: 0.0.1
schema: v1
mcpServers:
  - name: Nonlinear Calendar
    type: streamable-http
    url: https://balance-engine.vercel.app/api/mcp

{
  "mcpServers": {
    "nonlinear-calendar": {
      "httpUrl": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "nonlinear-calendar": {
      "type": "http",
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "nonlinear-calendar": {
      "url": "https://balance-engine.vercel.app/api/mcp"
    }
  }
}

goose://extension?url=https%3A%2F%2Fbalance-engine.vercel.app%2Fapi%2Fmcp&type=streamable_http&id=nonlinear-calendar&name=Nonlinear%20Calendar

Is Nonlinear Calendar up right now?

It answered our last check on 24 October 2026 in 275 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to Nonlinear Calendar

Questions about Nonlinear Calendar

How many tools does Nonlinear Calendar have?

12, as returned by the server's own tools/list on 21 September 2026: activity_window, body_rhythm, date_lookup, energy_adjust, month_brief, people_roster, personal_day, personal_month, and 4 more.

Is Nonlinear Calendar down?

It answered our last check on 24 October 2026 in 275 ms. Over 6 checks since 11 September 2026 it answered 6.

How do I add Nonlinear Calendar to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://balance-engine.vercel.app/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Nonlinear Calendar need an API key?

It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.

Where this comes from

Publisher: io.github.singularitybpjade. Endpoint host: balance-engine.vercel.app. ARD identifier: urn:air:io.github.singularitybpjade:mcp:balance-engine. First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.