Sidekick for

Sidekick runs as a local MCP server that OpenCode starts for you.

  1. Get the InDesign plugin

    From Adobe Exchange. 30 days to try, then $9.95 a month, cancel any time.

    Get it on Adobe Exchange

  2. Install Sidekick

    Open the downloaded file and follow the prompts. A Mac asks for your password, Windows for administrator permission.

    Another computer?

  3. Add Sidekick to OpenCode

    Add to ~/.config/opencode/opencode.json (Windows: %USERPROFILE%\.config\opencode\opencode.json). Already have an opencode.jsonc there? Add it to that file instead.

    {
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "indesign-sidekick": {
      "type": "local",
      "command": ["indesign-sidekick", "start"],
      "enabled": true
    }
  }
}

  4. Check it

    Restart OpenCode. In a terminal, opencode mcp list should show indesign-sidekick as connected. Then, with a document open in InDesign, ask: how many pages does my document have?

    No answer from InDesign? Ask sidekick health and send us the reply.

Other ways

Not working?

opencode mcp list says no servers are configured?
That's a bug in the OpenCode 2.0 preview, which doesn't load MCP servers yet. Use the stable 1.x release.
Your assistant can't find indesign-sidekick?
Restart the assistant after installing, so it sees the updated PATH. Still nothing? Use the full path: /usr/local/bin/indesign-sidekick on macOS, or on Windows run where indesign-sidekick and take the path ending in .cmd.
Slow start on a company network?
If your network blocks the npm registry, add --offline to the npx arguments (npx -y --offline indesign-sidekick start). Sidekick then stops picking up new versions until you remove it.
Using Sidekick in more than one assistant?
Install it once for the whole computer, then add it to each assistant, and only once per assistant: two entries in one assistant start two copies. See Using multiple AI assistants.