Connect Antigravity to Any API

Give Google Antigravity a verifiable, domain-scoped identity. Configure the Streamable HTTP Remote MCP endpoint in ~/.gemini/config/mcp_config.json in one prompt.

Preferred: 1-Shot Setup Prompt

Paste this prompt directly into Antigravity. It safely installs the agent skill and wires the Remote MCP endpoint:

I want to install the AgentOnboard skill and MCP server:

1. For skill, run:
npx skills add agentonboard/skills -g -a '*' -s '*' -y

2. For MCP, add the server to your global MCP config (~/.gemini/config/mcp_config.json):
{
  "mcpServers": {
    "agentonboard": {
      "type": "http",
      "url": "https://agentonboard.xyz/api/mcp",
      "headers": {
        "Authorization": "Bearer <key>"
      }
    }
  }
}

3. API key setup:
Ask me for my AgentOnboard API key (starts with aon_live_). If I provide it, replace <key> with my key and write this config. If I prefer not to provide it in chat, guide me where to save it.

4. Once done, verify connection using the whoami tool.
Rules: Never commit or echo the full API key into persistent files or chat logs.

Your secret key (aon_live_...) is configured directly on the client transport. It is never stored in Antigravity’s persistent conversation history or prompt cache.

Alternative: Manual Setup

If you prefer to configure Antigravity by hand without using the automated prompt:

1. Install the agent skill

Installs workflow instructions so Antigravity understands auth.md discovery:

npx skills add agentonboard/skills -g -a '*' -s '*' -y

2. Configure ~/.gemini/config/mcp_config.json

Add this configuration to ~/.gemini/config/mcp_config.json:

~/.gemini/config/mcp_config.json

{
  "mcpServers": {
    "agentonboard": {
      "type": "http",
      "url": "https://agentonboard.xyz/api/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

3. Reload session

Restart Antigravity session / reload MCP to initialize the new tools.

Verify connection

In your Antigravity chat or terminal, ask:

Run the whoami tool and tell me which AgentOnboard account is connected.

Antigravity will call the Remote MCP server and print your verified email:

{
  "email": "user@example.com",
  "key_prefix": "aon_live_abcd"
}

Frequently asked about Antigravity

Where is Antigravity's MCP configuration located?

Global configuration lives in ~/.gemini/config/mcp_config.json. Antigravity discovers this file across all CLI and IDE workspaces.

Does Antigravity support skills and MCP simultaneously?

Yes. Antigravity uses agent skills (installed via npx skills add agentonboard/skills) for workflow instructions and MCP tools (get_token, whoami) for cryptographic token minting.

Ready to run Antigravity with AgentOnboard?

Create an API key in your dashboard and paste the setup prompt. Takes less than two minutes.

Get your API key All agents