Antigravity OAuth Errors — Fix 'Version No Longer Supported' and Authentication Issues

## Fix 'Version No Longer Supported' Error This is the most common Antigravity issue. Google blocked the old User-Agent version. Here's how to fix it:

### Step 1: Locate the File to Patch The User-Agent is hardcoded in the pi-ai library. Find it based on your OS:

Windows (npm install): `` C:\Users\YOURUSER\AppData\Roaming\npm\node_modules\openclaw\node_modules\@mariozechner\pi-ai\dist\providers\google-gemini-cli.js

Windows (pnpm): `` C:\Users\YOURUSER\AppData\Local\pnpm\global\5\node_modules\openclaw\node_modules\@mariozechner\pi-ai\dist\providers\google-gemini-cli.js

macOS/Linux (npm): ``bash ~/.npm-global/lib/node_modules/openclaw/node_modules/@mariozechner/pi-ai/dist/providers/google-gemini-cli.js

macOS/Linux (source build): ``bash ~/moltbot-ref/node_modules/.pnpm/@mariozechner+pi-ai@0.45.3_*/node_modules/@mariozechner/pi-ai/dist/providers/google-gemini-cli.js

### Step 2: Edit the User-Agent Open the file and find this line (around line 26):

"User-Agent": "antigravity/1.11.5 darwin/arm64",

Change it to:

"User-Agent": "antigravity/1.15.8 darwin/arm64",

### Step 3: Restart the Gateway

openclaw gateway restart# orclawdbot gateway restart

That's it! The error should be resolved.

## Alternative: Switch to Direct Gemini API If patching doesn't work or you want a more stable solution, use a direct Gemini API key instead of Antigravity:

clawdbot configure

Select Google Gemini (direct API) instead of Antigravity. You'll need a Gemini API key from https://aistudio.google.com/apikey

Model IDs for direct Gemini: - google-gemini/gemini-1.5-pro - google-gemini/gemini-1.5-flash (cheaper/faster) - google-gemini/gemini-2.0-flash-exp

## Fix Gmail OAuth Configuration Errors If you see: error: too many arguments for 'setup'. Expected 0 arguments but got 1.

The Gmail OAuth config goes at the root level of your config file, NOT inside skills.entries:

Correct placement in `~/.clawdbot/config.json5`:

{  "meta": { ... },  "models": { ... },    // Gmail config at ROOT level  "gmail": {    "clientId": "YOUR_GOOGLE_CLIENT_ID.apps.googleusercontent.com",    "clientSecret": "YOUR_GOOGLE_CLIENT_SECRET"  },    "channels": { ... },  "skills": { ... }}

Google Cloud Console Setup: 1. Create a project at https://console.cloud.google.com/ 2. Enable Gmail API 3. Create OAuth 2.0 credentials (Desktop app type) 4. Add http://127.0.0.1:5316 as authorized redirect URI 5. Download client ID and secret

Then authenticate:

clawdbot gmail login

## Fix OAuth Token Errors (API Key vs Setup Token) If you see: HTTP 401: authentication_error: invalid x-api-key

Use the correct token type: - ✅ Use sk-ant-oat01-... tokens (from claude setup-token) - ❌ Don't use sk-ant-sid02-... tokens (browser session cookies - they're short-lived and fragile)

To get the correct token:

claude setup-token

This generates a proper OAuth token that won't expire randomly.

## Setting Up Multiple Antigravity Accounts If you see: Profile google-antigravity:email@gmail.com timed out (possible rate limit). Trying next account...

OpenClaw supports multiple Google accounts for failover. Configure in auth-profiles.json:

{  "google-antigravity": [    {      "email": "account1@gmail.com",      "token": "..."    },    {      "email": "account2@gmail.com",       "token": "..."    }  ]}

When one account hits rate limits, OpenClaw automatically tries the next account.

To add a second account:

clawdbot configure# Select Google Antigravity# Log in with your second Google account# It will be added to the profile list

## Rate Limit Cooldowns Antigravity has aggressive rate limits. If you keep hitting cooldowns: 1. Add more accounts for failover (see above) 2. Reduce request frequency - space out your requests 3. Use a fallback model - configure a backup like OpenRouter: ``json5 { agents: { defaults: { model: { primary: "google-antigravity/gemini-2.0-flash-exp", fallbacks: ["openrouter/google/gemini-2.0-flash-exp:free"] } } } }

## Full Troubleshooting Checklist

# 1. Check your versionopenclaw --version# 2. Check gateway statusopenclaw status --all# 3. Probe the Antigravity provideropenclaw models status --probe --probe-provider google-antigravity# 4. Watch logs for errorsopenclaw logs --follow# 5. Restart after any config changesopenclaw gateway restart