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Using with OpenClaw / ClawdBot

OpenClaw (formerly ClawdBot/Moltbot) is an AI agent gateway that connects to messaging apps like Telegram, WhatsApp, Discord, Slack, and iMessage. You can configure it to use this proxy for Claude and Gemini models.

Prerequisites

  • OpenClaw installed (npm install -g openclaw@latest)
  • Antigravity Claude Proxy running on port 8080
  • At least one Google account linked to the proxy

Configure OpenClaw

Edit your OpenClaw config file at:

  • macOS/Linux: ~/.openclaw/openclaw.json
  • Windows: %USERPROFILE%\.openclaw\openclaw.json

Add the following configuration:

{
  "models": {
    "mode": "merge",
    "providers": {
      "antigravity-proxy": {
        "baseUrl": "http://127.0.0.1:8080",
        "apiKey": "test",
        "api": "anthropic-messages",
        "models": [
          {
            "id": "gemini-3.8-flash-tiered",
            "name": "Gemini 3.8 Flash",
            "reasoning": true,
            "input": ["text", "image"],
            "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 },
            "contextWindow": 1048576,
            "maxTokens": 65536
          },
          {
            "id": "gemini-3.6-flash-high",
            "name": "Gemini 3.6 Flash (High)",
            "reasoning": true,
            "input": ["text", "image"],
            "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 },
            "contextWindow": 1048576,
            "maxTokens": 65536
          },
          {
            "id": "claude-sonnet-4-6",
            "name": "Claude Sonnet 4.6",
            "reasoning": false,
            "input": ["text", "image"],
            "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 },
            "contextWindow": 200000,
            "maxTokens": 16384
          },
          {
            "id": "claude-sonnet-4-6-thinking",
            "name": "Claude Sonnet 4.6 Thinking",
            "reasoning": true,
            "input": ["text", "image"],
            "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 },
            "contextWindow": 200000,
            "maxTokens": 16384
          },
          {
            "id": "claude-opus-4-6-thinking",
            "name": "Claude Opus 4.6 Thinking",
            "reasoning": true,
            "input": ["text", "image"],
            "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 },
            "contextWindow": 200000,
            "maxTokens": 32000
          }
        ]
      }
    }
  },
  "agents": {
    "defaults": {
      "model": {
        "primary": "antigravity-proxy/gemini-3.8-flash-tiered",
        "fallbacks": ["antigravity-proxy/gemini-3.6-flash-high"]
      },
      "models": {
        "antigravity-proxy/gemini-3.8-flash-tiered": {}
      }
    }
  }
}

Important: Use 127.0.0.1 instead of localhost in the baseUrl. This ensures the connection stays on the loopback interface. If you're running on a VPS and accidentally start the proxy bound to 0.0.0.0, using localhost in your client config could still work but 127.0.0.1 makes the intent explicit and avoids potential DNS resolution issues.

Start Both Services

# Terminal 1: Start the proxy (binds to localhost only by default)
antigravity-claude-proxy start

# Terminal 2: Start OpenClaw gateway
openclaw gateway

Verify Configuration

# Check available models
openclaw models list

# Check gateway status
openclaw status

You should see models prefixed with antigravity-proxy/ in the list.

Switch Models

To change the default model:

openclaw models set antigravity-proxy/claude-opus-4-6-thinking

Or edit the model.primary field in your config file.

Troubleshooting

Connection Refused

Make sure the proxy is running before starting OpenClaw:

curl http://127.0.0.1:8080/health

Models Not Showing

  1. Verify the config file is valid JSON
  2. Check that mode is set to "merge" (not "replace" unless you want to override all built-in models)
  3. Restart the OpenClaw gateway after config changes

VPS Security

If running on a VPS, ensure the proxy only binds to localhost:

# Default binds to 0.0.0.0 (all interfaces) - exposed to network!
antigravity-claude-proxy start

# Explicitly bind to localhost only (recommended for VPS)
HOST=127.0.0.1 antigravity-claude-proxy start

By default, the proxy binds to 0.0.0.0 which exposes it to all network interfaces. On a VPS, always use HOST=127.0.0.1 to restrict access to localhost only, or ensure you have proper authentication (API_KEY env var) and firewall rules in place.

Further Reading