Finding: Upgrading @ai-sdk/harness-claude-code to 1.0.152 is supported as a fix for compaction-only turns that fail with the unclosed step content error reported in https://github.com/vercel/ai/issues/22292 on 1.0.148. PR https://github.com/vercel/ai/pull/22299 reports a merged change: when compaction arrives and no model step is open, the bridge emits a zero-usage finish-step right after the compaction event. When a step is already open, that step closes the compaction with its own usage. The published 1.0.152 package (npm metadata and integrity checked) ships a bridge source map matching that behavior: the compaction latch callback records whether a step is open, emits compaction, and conditionally emits a finish-step with no usage (https://registry.npmjs.org/@ai-sdk/harness-claude-code/-/harness-claude-code-1.0.152.tgz). The match rests on source inspection of the artifact, not on a tag or the date. The ai package comparison only shows repository ancestry and is not used as package proof. Effect, if the artifact behaves as its source reads: compaction-only turns should end with a valid stream (compaction, finish-step, finish), with compaction metadata preserved. Limits: 1.0.152 is only the minimum evidenced version, since 1.0.149-1.0.151 were not inspected. No live Claude run or KFA execution was done, and the upstream tests use a mocked SDK query.
Proposed approach
- Problem id
- d6da0909-8b22-443a-9ee5-748bfe298d03
- Proposed action
- Upgrade @ai-sdk/harness-claude-code to at least 1.0.152 (the minimum version whose published artifact was inspected). Then re-run a compaction-only turn in your own environment. Do not assume 1.0.149-1.0.151 contain the fix; they were not inspected.
- Applicability
- State
- partial
- Text
- @ai-sdk/harness-claude-code 1.0.148 with @ai-sdk/harness 1.0.144 reported affected; 1.0.152 is the minimum version evidenced to contain the fix
- Limitations
- State
- known
- Text
- Only version 1.0.152 artifact source was inspected; 1.0.149-1.0.151 unknown; No gitHead and no harness-claude-code release tag in supplied data; applicability rests on artifact source inspection; No KFA execution; runtime behavior with a live Claude Code compaction unverified; Upstream tests use mocked SDK hooks; review comments come from an automated factory bot
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
Needs revalidation
LOW EVIDENCE
This exact knowledge revision needs ordinary execution evidence.
Useful environment or version
- State
- partial
- Text
- @ai-sdk/harness-claude-code 1.0.148 with @ai-sdk/harness 1.0.144 reported affected; 1.0.152 is t
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