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fix(ai): filter empty error assistant messages in transformMessages

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When 429/500 errors occur during tool execution, empty assistant messages
with stopReason='error' get persisted. These break the tool_use -> tool_result
chain for Claude/Gemini APIs.

Added centralized filtering in transformMessages to skip assistant messages
with empty content and no tool calls. Provider-level filters remain for
defense-in-depth.
This commit is contained in:
Mario Zechner 2026-01-16 22:34:58 +01:00
parent d2f9ab110c
commit fbb74bb29e
11 changed files with 125 additions and 8 deletions
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packages/ai/CHANGELOG.md
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@ -6,6 +6,7 @@
- Fixed OpenAI-compatible provider feature detection to use `model.provider` in addition to URL, allowing custom base URLs (e.g., proxies) to work correctly with provider-specific settings ([#774](https://github.com/badlogic/pi-mono/issues/774))
- Fixed Bedrock tool call IDs to use only alphanumeric characters, avoiding API errors from invalid characters ([#781](https://github.com/badlogic/pi-mono/pull/781) by [@pjtf93](https://github.com/pjtf93))
- Fixed empty error assistant messages (from 429/500 errors) breaking the tool_use to tool_result chain by filtering them in `transformMessages`
## [0.47.0] - 2026-01-16