0.13.4

mikeqzy/3dgs-avatar-release0.13.4Jul 11, 2026by laithrw

AI Summary

Updates the MCP server for CLI 3.0 and fixes critical navigation and markdown extraction issues. Enhances error handling for LLM output truncation and improves CLI startup performance.

Key Highlights

Updated MCP server for CLI 3.0 with max_dim guard.
Fixes for navigation readiness detection and markdown extraction.
Improved LLM output truncation handling and CLI startup speed.

New Features

MCP server for CLI 3.0
Navigation readiness detection fix
Markdown extraction fix
LLM output truncation handling
Browser error handling
Browser Harness pinning
CLI polish

Full Release Notes

## What's Changed
- MCP server for CLI 3.0: shared MCP runner, `max_dim` guard.
- Fix navigation readiness detection: per-target lifecycle event storage, and handle same-document navigations without burning the readiness timeout.
- Fix markdown extraction destroying URLs and dropping long link lines.
- Detect LLM output truncation instead of failing with misleading parse errors, and let truncation errors switch to the fallback LLM.
- Keep plain BrowserErrors recoverable and preserve structured error memory through execute_action.
- Fix visibility check mutating shared snapshot bounds.
- Pin Browser Harness to `0.1.5` (Windows reliability fixes, cloud-browser suggestion).
- CLI polish: shim for legacy CLI commands, hints for unknown commands, faster startup.
- Restructure README quickstart around the CLI and Python library paths.

**Full Changelog**: https://github.com/browser-use/browser-use/compare/0.13.3...0.13.4