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JSON Canvas logo

JSON Canvas

cam10001110101/mcp-server-obsidian-jsoncanvas

A Model Context Protocol (MCP) server for working with JSON Canvas files — the open infinite-canvas format used by Obsidian. It lets an MCP client create, validate, read, and list.canvas files.

View on GitHub3

Install

docker run -i --rm -v canvas-data:/data mcp/jsoncanvas

Client configuration

{
  "mcpServers": {
    "jsoncanvas": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-v",
        "canvas-data:/data",
        "mcp/jsoncanvas"
      ],
      "env": {
        "OUTPUT_PATH": "<OUTPUT_PATH>"
      }
    }
  }
}

Environment variables

OUTPUT_PATH
GitHub stars
3
Author
@cam10001110101
Category
Knowledge Management, Developer Tools
License
MIT
Updated
Oct 6, 2026

About JSON Canvas

Built on the official mcp Python SDK (>=1.27), which negotiates the 2025-11-25 MCP protocol revision. Runs over stdio by default and optionally over the Streamable HTTP transport.

Tools (6)

  • create_canvas

    Create a canvas from nodes (and optional edges) and write it to a date-prefixed.canvas file under OUTPUT_PATH.

  • validate_canvas

    Validate canvas data against the JSON Canvas 1.0 specification.

  • read_canvas

    Read a stored.canvas file and return its nodes and edges.

  • edit_canvas

    Add, update, and/or remove nodes and edges on a stored canvas in one atomic write (a failed operation leaves the file unchanged).

  • export_canvas

    Export a stored canvas to another format.

  • search_canvases

    Case-insensitive substring search across stored canvases.

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

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