Capacities

You can connect your Claude-style MCP client to Capacities by running the Capacities MCP Server locally. This server exposes common Capacities endpoints for managing spaces, searching content, saving web links, and adding daily notes, making it easy to integrate your knowledge base into your workflow.

How to use

You interact with the Capacities MCP Server through an MCP client by starting the server as a local process and pointing your client to the MCP endpoint. The server provides access to these core actions: listing spaces, retrieving space information, searching content across spaces, saving web links with metadata, and adding content to daily notes. Use these capabilities to fetch data, index your knowledge base, or push items into Capacities directly from your tooling.

How to install

Prerequisites you need on your machine: Node.js with Bun-compatible tooling, and an editor to edit configuration files. You will also need your Capacities API key to authenticate requests.

# Quick local setup (example workflow)
# 1) Ensure you have Node/Bun tooling installed
# 2) Create or update your project to include the Capacities MCP server config

Additional sections

Configuration and usage notes:
- The Capacities MCP Server runs locally via a standard MCP client configuration. It uses the npx command to launch the Capacities MCP package and passes your API key for authentication.

Example configuration snippet for Claude Desktop integration (place in your local MCP config):

{
  "mcpServers": {
    "capacities": {
      "command": "npx",
      "args": ["-y", "capacities-mcp"],
      "env": {
        "CAPACITIES_API_KEY": "your_capacities_api_key_here"
      }
    }
  }
}

Available tools

capacities_list_spaces

Retrieve a list of all your personal Capacities spaces.

capacities_get_space_info

Get detailed information about a specific space, including its structures and collections. Requires spaceId.

capacities_search

Search across your Capacities spaces with optional filters like searchTerm, spaceIds, mode, and advanced structure filters.

capacities_save_weblink

Save a web link to a specified space with optional metadata such as title, description, tags, and markdown content to add to notes.

capacities_save_to_daily_note

Append markdown content to today’s daily note in a specified space, with optional origin labeling and timestamp control.