Package Exports

@captain-sdk/captain-mcp
@captain-sdk/captain-mcp/dist/server.js

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Readme

@captain-sdk/captain-mcp

MCP server for Captain — multimodal RAG search and persistent project search. Usable from Claude Code, Cursor, and any MCP-aware client.

What it does

Exposes 18 tools:

Core search & collection management (16, ported from the OpenClaw plugin):

captain_search, captain_list_collections, captain_create_collection, captain_delete_collection
captain_list_documents, captain_delete_document, captain_wipe_documents
captain_job_status, captain_cancel_job
captain_index_url, captain_index_youtube, captain_index_text
captain_index_s3, captain_index_gcs, captain_index_azure, captain_index_r2

Live-search sugar (2, new in MCP):

captain_save — save a short note (decision, gotcha, bug repro, design constraint) to a per-project collection with a timestamped, slugified filename. Auto-creates the collection on first use.
captain_find — semantic search over saved notes, with timestamps surfaced so stale notes are obvious.

Install

npm install -g @captain-sdk/captain-mcp

Or run directly via npx (recommended — what the Claude Code and Cursor integrations use):

npx -y @captain-sdk/captain-mcp

Config (env vars)

CAPTAIN_API_KEY=cap_...                # required
CAPTAIN_ORGANIZATION_ID=019a...        # required
CAPTAIN_BASE_URL=https://api.runcaptain.com  # optional, default shown

Get an API key at runcaptain.com/studio.

Use from Claude Code

Install the companion plugin: claude-code-plugin-captain. It bundles the .mcp.json pointing at this package.

Use from Cursor

Use the one-click deeplink or manual .cursor/mcp.json in cursor-plugin-captain.

Use from any MCP client

Add to your client's MCP config:

{
  "mcpServers": {
    "captain": {
      "command": "npx",
      "args": ["-y", "@captain-sdk/captain-mcp"],
      "env": {
        "CAPTAIN_API_KEY": "cap_...",
        "CAPTAIN_ORGANIZATION_ID": "019a..."
      }
    }
  }
}

Smoke test

CAPTAIN_API_KEY=... CAPTAIN_ORGANIZATION_ID=... \
  npx @modelcontextprotocol/inspector npx @captain-sdk/captain-mcp

Captain API docs
OpenClaw Captain plugin — equivalent tools for the OpenClaw runtime.