@getabrain/mcp-server

MCP server for GetABrain.ai — give your AI agent real human judgment as native tools.

Use with Claude Desktop / Cursor

Add to your MCP client config (e.g. claude_desktop_config.json):

{
  "mcpServers": {
    "getabrain": {
      "command": "npx",
      "args": ["-y", "@getabrain/mcp-server"],
      "env": {
        "GETABRAIN_API_KEY": "gab_k_…",
        "GETABRAIN_API_SECRET": "gab_s_…"
      }
    }
  }
}

Get your API key by signing up at https://getabrain.ai.

Test mode

Test mode is a flag on the key, not a different key format. When you mint an API key — via POST /api/v1/requestor/keys with {"mode":"test"}, or by choosing "test" in the dashboard — you get back a completely normal gab_k_… / gab_s_… key pair. There's no _test_ in the string; the test-ness lives in the database as an is_test flag on that key. No funding or card required.

Point GETABRAIN_API_KEY / GETABRAIN_API_SECRET at a test-mode key and the server behaves identically, except:

• submit_query never touches your balance — no charge, no insufficient_balance errors.
• Responses come back synthetic and are always marked simulated: true, so your pipeline (submit → wait/poll → rate) can be built and exercised end-to-end before any real human worker or real money is involved.
• get_balance reports mode: "test" so the agent/human can tell at a glance which environment it's in.

When you're ready to go live: mint a live-mode key (same call, {"mode":"live"} or the dashboard default), fund the account with create_topup_link (works with either key type — a test-mode agent can generate the link, a human completes checkout to add real funds), and swap the env vars. get_balance then reports mode: "live", and submit_query starts spending real balance and dispatching to real paid workers.

Tools

• get_balance — read-only: prepaid balance (cents), mode ("test"/"live"), and auto_reload_enabled (with a setup link + hint when it's off and would otherwise stall a live account at zero balance).
• create_topup_link — mints a Stripe Checkout URL to add funds (min $5); a human opens it in a browser to pay — the agent cannot complete payment itself.
• submit_query — ask real humans a question (16 query types: A/B test, rating, ranking, sentiment, yes/no, image/video/audio review, voice/video/photo capture, …). Returns a query_id. Spends balance on a live key; free and simulated: true on a test key.
• get_responses — one-shot, read-only: current status + whatever responses exist right now, no waiting.
• wait_for_responses — bounded polling (up to max_wait_seconds, default/max 50s); returns ready with responses once enough arrive, or pending — call again to keep waiting. Use this instead of get_responses when you want the tool call itself to wait.
• list_queries — read-only: your recent queries, optionally filtered by status.
• rate_response — rate a worker's answer 1–5 (optional feedback_text); feeds the worker quality system.

Example agent flow

1. get_balance → confirm funds (or mode: "test" for a free sandbox run).
2. If funds are short on a live key: create_topup_link → human completes checkout → get_balance again.
3. submit_query → get query_id.
4. wait_for_responses (repeat while pending) → read the human (or simulated, in test mode) answers.
5. rate_response → optionally rate each response to improve future worker matching.

Full API docs: https://getabrain.ai/docs/api