v2.0.0

2.0.0 (2026-09-28)

⚠ BREAKING CHANGES

• AIR tool call contract, exact diff patches, and fixes for every client (#530)

Features

• add _meta.mcpStartupAwaitTimeoutMs option to allow awaiting for requested MCP servers startup outcome on session start (#517) (cf6609e)
• AIR tool call contract, exact diff patches, and fixes for every client (#530) (966a544)

Bug Fixes

• report authentication failures through ACP login flow (#550) (2a26ee4)
• resolve ACP v1 conformance failures found by acp-tck (#536) (1cc6223)
• restore read-only mode and clarify access presets (#480) (7fee150)
• specify correct default behavior in mcp-stratup-await-timeout.md (#551) (bf37821)
• update codex to 0.157.0 (#549) (7839796)
• update codex to 0.157.1 (#554) (9510cf1)
• update codex to 0.158.0 (#559) (59d0fb0)