What's New

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0.15.0 (2026-08-21)

• Fix non-deterministic notification ordering — notifications are serialized through a sink drained by concatMap, preserving arrival order (thanks @ljiro)
• Drain queued notifications on graceful close instead of discarding them; closeGracefully() now waits for the drain, bounded by the session requestTimeout
• Distinguish expected from anomalous notification-sink emission failures in logging
• Security: Jackson 2.21.2 → 2.21.5 and Jetty 12.0.14 → 12.0.37, clearing 17 known advisories (5 high) in the published dependency closure
• Ship the verbatim Apache License 2.0, and package LICENSE and NOTICE under META-INF in every artifact
• Run the integration tests — three *IT classes existed but were never executed by mvn verify
• Pin GitHub Actions to commit SHAs; bound workflow jobs to 30 minutes

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0.14.0 (2026-06-11)

• Docs: 0.14.0 release notes in README and CHANGELOG
• Add unstable providers/* methods
• Add messageId overloads to prompt context send methods
• Promote session config-option API to stable
• Deprecate the session-model API for removal
• Add logout and session/delete agent methods
• Add additionalDirectories and per-chunk messageId fields
• Add WebSocket edge case tests, increase max message size to 4MB
• Fix WebSocket client transport echoing agent requests back to agent
• Update version references to 0.12.0, add snapshot instructions
• Bump version to 0.13.0-SNAPSHOT

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0.12.0 (2026-05-25)

• Add tutorial cross-references for module-20 and module-31 in release notes
• Add elicitation decline and cancel integration tests
• Update README with versioning policy and 0.12.0-SNAPSHOT release notes
• Add session/fork and session/set_config_option (unstable)
• Add elicitation/create and elicitation/complete (unstable)
• Add @UnstableAcpApi stability marker annotation
• Add session/list, session/close, session/resume methods
• Bump version to 0.12.0-SNAPSHOT

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0.11.0 (2026-05-12)

• Remove MCP SDK dependency, add own JSON abstraction layer
• Update .gitignore with local tool config
• Bump version to 0.11.0-SNAPSHOT

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0.10.0 (2026-04-10)

• Restore Duration import removed by PR #1
• Add Implementation type with clientInfo/agentInfo fields
• Add UsageUpdate support to SessionUpdate types
• Add support for UsageUpdate in SessionUpdate interface and related tests
• Update README for 0.9.0 release
• Bump version to 0.10.0-SNAPSHOT
• style: remove unused imports

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0.9.0 (2026-03-31)

• Initial release.