0.13.4

juliangarnier/anime0.13.4Jul 11, 2026by laithrw

AI Summary

This release focuses on updating the MCP server for CLI 3.0, fixing critical bugs in navigation readiness detection and markdown extraction, and improving CLI performance. It also includes updates to the Browser Harness and documentation restructuring.

Key Highlights

MCP server for CLI 3.0: shared runner and max_dim guard
Fixed navigation readiness detection to handle same-document navigations without timeouts
Fixed markdown extraction destroying URLs and dropping long link lines
CLI polish: shims for legacy commands, hints for unknown commands, and faster startup
Pinning Browser Harness to version 0.1.5 for Windows reliability fixes

New Features

MCP server for CLI 3.0 with shared runner and max_dim guard
Detection of LLM output truncation with automatic fallback logic

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