CLAUDEZILLA by Boot Industries
Browser automation for Claude Code and terminal AI harnesses. Control Firefox with full DOM access, screenshots, and page analysis. No Chrome, no telemetry.
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About this extension
Claudezilla brings native Firefox browser automation to AI coding harnesses: Claude Code, Hermes Agent, Pi Agent, omp, and standard mcp clients.
Control Firefox directly from your terminal: navigate pages, click elements, fill forms, capture screenshots, and analyze page content. A Google-free, telemetry-free alternative to Chrome-based browser automation.
FEATURES:
- Multi-harness support: Out-of-the-box integration with Claude Code, Hermes Agent, Pi Agent, and omp
- Eager & lazy tool discovery: Full catalog exposure for single-discovery harnesses (Hermes, Pi, omp) or lazy on-demand loading for token savings
- Page navigation and full DOM interaction (click, type, scroll, press keys)
- Attach to existing user tabs: Drive open browser tabs in place with explicit agent-initiated attach
- Screenshot capture to temporary paths with dynamic readiness detection and image compression
- Annotated screenshots with numbered element badges for precise visual interaction
- Structured page analysis via JSON with configurable limits and explicit truncation metadata (faster and cheaper than screenshots)
- Accessibility tree snapshots for semantic page understanding
- Page state diffing to detect changes between interactions
- Cookie and consent banner auto-dismissal (GDPR overlays, CMP platforms)
- Domain allowlists for agent sandboxing
- Flexible element waiting (CSS selector, text content, or URL pattern)
- Network request and console log monitoring
- Multi-agent and multi-harness safety: Tab ownership tracking, screenshot mutex, and slot reservations
- Session-scoped focus loops for persistent iterative development across sessions
- Orphaned tab cleanup with configurable timeout (CLAUDEZILLA_AGENT_TIMEOUT_MS) for human-in-the-loop workflows
- Per-operation timeouts (5s–300s, default 150s)
REQUIREMENTS:
- Supported AI harness: Claude Code, Hermes Agent, Pi Agent, omp, or standard mcp client
- Native messaging host (one-command installer with --target flag)
- Firefox 140+
- macOS, Linux, or Windows 10/11
PRIVACY & SECURITY:
- All communication is local via Unix socket / Windows pipe (no network exposure)
- Zero telemetry: No data collected or transmitted to external servers
- Page content accessed only on explicit tool invocation
- Console capture and JavaScript evaluation are strictly opt-in (off by default in popup settings)
- Request bodies are never captured
- Per-agent tab ownership prevents cross-session and cross-harness interference
- Community supported
- Open source (MIT license)
Setup & docs: claudezilla.com
Control Firefox directly from your terminal: navigate pages, click elements, fill forms, capture screenshots, and analyze page content. A Google-free, telemetry-free alternative to Chrome-based browser automation.
FEATURES:
- Multi-harness support: Out-of-the-box integration with Claude Code, Hermes Agent, Pi Agent, and omp
- Eager & lazy tool discovery: Full catalog exposure for single-discovery harnesses (Hermes, Pi, omp) or lazy on-demand loading for token savings
- Page navigation and full DOM interaction (click, type, scroll, press keys)
- Attach to existing user tabs: Drive open browser tabs in place with explicit agent-initiated attach
- Screenshot capture to temporary paths with dynamic readiness detection and image compression
- Annotated screenshots with numbered element badges for precise visual interaction
- Structured page analysis via JSON with configurable limits and explicit truncation metadata (faster and cheaper than screenshots)
- Accessibility tree snapshots for semantic page understanding
- Page state diffing to detect changes between interactions
- Cookie and consent banner auto-dismissal (GDPR overlays, CMP platforms)
- Domain allowlists for agent sandboxing
- Flexible element waiting (CSS selector, text content, or URL pattern)
- Network request and console log monitoring
- Multi-agent and multi-harness safety: Tab ownership tracking, screenshot mutex, and slot reservations
- Session-scoped focus loops for persistent iterative development across sessions
- Orphaned tab cleanup with configurable timeout (CLAUDEZILLA_AGENT_TIMEOUT_MS) for human-in-the-loop workflows
- Per-operation timeouts (5s–300s, default 150s)
REQUIREMENTS:
- Supported AI harness: Claude Code, Hermes Agent, Pi Agent, omp, or standard mcp client
- Native messaging host (one-command installer with --target flag)
- Firefox 140+
- macOS, Linux, or Windows 10/11
PRIVACY & SECURITY:
- All communication is local via Unix socket / Windows pipe (no network exposure)
- Zero telemetry: No data collected or transmitted to external servers
- Page content accessed only on explicit tool invocation
- Console capture and JavaScript evaluation are strictly opt-in (off by default in popup settings)
- Request bodies are never captured
- Per-agent tab ownership prevents cross-session and cross-harness interference
- Community supported
- Open source (MIT license)
Setup & docs: claudezilla.com
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Permissions and data
Required permissions:
- Exchange messages with programs other than Firefox
- Access browser tabs
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 0.7.0
- Size
- 316.55 KB
- Last updated
- 3 days ago (Sep 9, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection
Installation docs: https://claudezilla.com/extension.html
Permission justifications:
• nativeMessaging: Core functionality
• tabs/activeTab: Tab management
• <all_urls>: Content script for DOM interaction
• webRequest/webRequestBlocking: Page readiness detection
• storage: User preferences
No external data collection. All communication local via Unix socket.