First month free with promo codeFirst month free with codeEveryone else starts with 30 free calls and 30 minutes.Redeem DEEPGRAMStart free

Google Gemini setup guide

Connect Google Gemini to ClawCall with remote MCP

In Gemini Spark, add ClawCall as a custom Connected App with the MCP URL, then sign in. This works where Spark custom apps are available; regular Gemini chat does not offer it.

Based on Google’s documentation; not yet tested live with ClawCallUpdated

Remote MCP endpointhttps://api.clawcall.dev/mcp
Setup surface
Gemini Spark custom Connected App
Transport
Remote MCP URL
Authentication
OAuth discovery and DCR

Before you start

Availability. Google documents custom Connected Apps for Gemini Spark with important eligibility limits, including supported account, age, language, country, and Spark access. Google currently requires manual confirmation for write actions, so a host-level Always allow control may not be available.
  • A personal Google account with access to Gemini Spark custom Connected Apps.
  • A ClawCall account.
  • A real US destination in +1 E.164 format for any call you choose to place.
  • A clear, user-directed task with destination and decision boundaries specified before a real call.

Connect Google Gemini to ClawCall

  1. Confirm Gemini Spark eligibility

    Use a personal account and confirm the custom-app feature is available for your country, language, age, and account. Managed workspaces can expose different controls.

  2. Open Connected Apps

    In the Gemini web app, open Connected Apps settings and choose the control to add a custom app.

  3. Enter the ClawCall MCP URL

    Name the app ClawCall and enter https://api.clawcall.dev/mcp. The endpoint already follows the remote MCP contract Google requests.

    https://api.clawcall.dev/mcp
  4. Keep dynamic registration

    Leave Advanced features closed. Google says those fields are for servers without Dynamic Client Registration, and ClawCall supports DCR and OAuth discovery.

  5. Sign in and approve scopes

    Complete ClawCall sign-in, review calls:read and calls:write, and approve only if you trust the account and task.

  6. Or use Gemini CLI

    Gemini CLI supports Streamable HTTP, automatic OAuth discovery, and Dynamic Client Registration. Add ClawCall under mcpServers with httpUrl, run /mcp auth clawcall, and set trust to true.

    {
      "mcpServers": {
        "clawcall": {
          "httpUrl": "https://api.clawcall.dev/mcp",
          "trust": true
        }
      }
    }

OAuth scopes and host permissions

Google Gemini signs in with OAuth and asks for two scopes: calls:read to read account and call state, and calls:write to place or hang up calls and change call settings. It gets revocable tokens, never your ClawCall API key.

Recommended: trust ClawCall where Gemini allows it

Gemini Spark asks you to confirm each write action, and that cannot be turned off. In Gemini CLI, set trust to true for the uninterrupted workflow ClawCall recommends, the CLI’s equivalent of Always allow.

Trust only skips the repeated approval prompts. It does not widen the two OAuth scopes, override host policy, or allow bulk or automated calling.

Verify read-only, then place one controlled call

Check account state first. Only after that succeeds, place the first real call to a number you control.

1. Read-only check

Check my ClawCall plan and remaining trial allowance. Do not place a call.

2. One controlled call

Using ClawCall, call my phone at +1XXXXXXXXXX. Say this is a connector test, ask me to confirm I can hear the AI, then end the call. Show me any transcript evidence actually captured afterward.

Ask normally. Gemini Spark can pick ClawCall automatically when a task needs a phone call; choosing the app by hand is optional.

Tools and troubleshooting

ClawCall gives Google Gemini 11 tools: read tools for the calling guide, your plan, settings, calls, transcripts, and recordings, and write tools that place, wait on, or hang up a call and update settings. A call’s outcome describes the phone network, so read the transcript evidence actually captured before treating the task as done. The remote MCP reference lists every tool and scope.

If no tools appear, check that the server URL ends in /mcp. If you see 401 or a sign-in prompt, reconnect and approve ClawCall again instead of pasting an API key. For anything else, see troubleshooting in the docs.

Disconnect and revoke access

  1. Disconnect or remove ClawCall in Google Gemini.
  2. Open ClawCall Dashboard → Settings → Connected AI assistants → Disconnect to revoke its OAuth tokens.

FAQ

Do I need to choose ClawCall before every request?
No. Once the connection is enabled, the agent can pick ClawCall automatically when an ordinary request needs a phone call. Naming the tool is optional and mainly useful for troubleshooting.
What does it cost?
The ClawCall trial includes 30 calls and 30 minutes, whichever lasts later. After that, a paid plan covers ongoing calls. The host itself may need its own plan for plugins or connectors.
Does a successful network outcome prove the task succeeded?
No. A network outcome describes the call path. Read the transcript evidence actually captured before claiming a reservation, cancellation, price, or other real-world task was completed.
How do I revoke access?
Remove or disconnect ClawCall in the host, then open ClawCall Dashboard → Settings → Connected AI assistants → Disconnect to revoke that connection’s tokens.
How long does ClawCall keep transcripts and recordings?
ClawCall deletes transcripts 7 days after a call ends and recordings 10 minutes after a call ends. Recording URLs are temporary and cannot be renewed after they expire.

Sources

Setup steps come from Google Gemini’s own documentation and ClawCall’s product documentation, checked on the dates below.

  1. Google: Connect a custom app to Gemini Spark with MCPOfficial host documentation · checked
  2. Google: Gemini CLI MCP serversOfficial host documentation · checked
  3. Andreessen Horowitz: Top 100 Gen AI Consumer Apps, 6th editionIndependent market analysis · checked
  4. ClawCall: Hosted MCP for AI agentsClawCall documentation · checked
  5. ClawCall securityClawCall security · checked

Related pages

Give Google Gemini a phone line

Create a ClawCall account, add the endpoint, and start with the read-only check. The trial includes 30 calls and 30 minutes, whichever lasts later.

Text ClawCall