opencode-antigravity-web

Web search and URL reading plugin for OpenCode using Antigravity (Google CloudCode) API.

Features

• search_web: Search Google for documentation, error fixes, or general info with source citations
• read_url_content: Fetch and read the text content of a specific URL
• Dynamic model selection: Automatically fetches available models and picks the best one
• Smart fallback: Tries multiple models and endpoints if one fails (capacity issues, rate limits)
• Quota-aware: Skips models with exhausted quota

Prerequisites

This plugin requires authentication via the opencode-antigravity-auth plugin.

Installation

Add the plugin to your OpenCode config (opencode.json):

{
  "$schema": "https://opencode.ai/config.json",
  "plugins": [
    "opencode-antigravity-auth",
    "opencode-antigravity-web"
  ]
}

Then authenticate:

opencode auth login

Choose "OAuth with Google (Antigravity)" and follow the browser flow.

Tools

search_web

Search the web using Google Search via Antigravity API.

Arguments:

• query (required): The search query or question
• urls (optional): List of specific URLs to analyze along with the search
• thinking (optional): Enable deep thinking for more thorough analysis (default: true)

Example:

Search for "typescript generics tutorial"

read_url_content

Fetch and read the text content of a specific URL.

Arguments:

• url (required): The URL to fetch and read
• thinking (optional): Enable deep thinking for analysis (default: false)

Example:

Read the content from https://docs.example.com/api

How It Works

The plugin dynamically fetches available models from Google's CloudCode API and selects the best one based on:

1. Recommended models first - prioritizes Google's recommended models
2. Quota remaining - skips models with exhausted quota
3. Multiple endpoints - tries fallback endpoints if primary fails

This means the plugin automatically adapts to new models as Google releases them, without requiring updates.

Troubleshooting

"No Models Available"

• Check your authentication with opencode auth login
• Verify your Google One AI Premium subscription is active

"All Models Unavailable"

• This usually means temporary capacity issues on Google's servers
• The error will show which models/endpoints were tried
• Wait a few minutes and try again

Related Plugins

• opencode-antigravity-auth - Authentication (required)
• opencode-antigravity-img - Image generation with Gemini

Acknowledgments

This plugin was inspired by opencode-google-antigravity-auth by shekohex.

License

MIT