v0.39.1

vercel-labs/agent-browserv0.39.1Oct 13, 2026by github-actions[bot]

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AI Summary

This release fixes a critical bug where mutating and launch commands were incorrectly retried after a lost daemon response. It introduces `outcome_unknown` reporting in CLI JSON and MCP responses to allow callers to inspect results before retrying, while read-only commands remain unaffected.

Key Highlights

  • Fixed duplicate command execution after a lost daemon response
  • Mutating and launch commands are no longer retried after request bytes are sent
  • CLI JSON and MCP responses now report `outcome_unknown` for inspection
  • Read-only commands and failures before sending retain retry logic

Full Release Notes

### Bug Fixes

- Fixed **duplicate command execution after a lost daemon response** so mutating and launch commands are no longer retried after any request bytes have been sent. CLI JSON and MCP responses report `outcome_unknown` so callers can inspect the result before retrying; read-only commands and failures before sending retain their retries (#2085)

### Contributors

- @Railly
- @rotemb-wond

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