fix: merge consecutive tool results for Anthropic API compatibility#378
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glod wants to merge 1 commit intorowboatlabs:mainfrom
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fix: merge consecutive tool results for Anthropic API compatibility#378glod wants to merge 1 commit intorowboatlabs:mainfrom
glod wants to merge 1 commit intorowboatlabs:mainfrom
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When the Anthropic API returns multiple parallel tool calls in a single assistant message, all tool_result blocks must be sent together in the next message. Previously, each tool result was sent as a separate message, causing Anthropic's API to reject the request with: "tool_use ids were found without tool_result blocks immediately after" This change modifies convertFromMessages() to merge consecutive tool messages into a single message containing all tool_result content blocks. Fixes rowboatlabs#375
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@glod is attempting to deploy a commit to the RowBoat Labs Team on Vercel. A member of the Team first needs to authorize it. |
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I believe the Anthropic issue has been solved with this commit: 097efb3 If this is still an issue, can you put provide to reproduce (e.g. what prompt was used)? |
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Summary
tool_resultcontent blocksProblem
When an agent workflow triggers multiple parallel tool calls, the Anthropic API returns an error:
This happens because each tool result was being sent as a separate message, but Anthropic's API requires all tool results for parallel calls to be in a single message.
Solution
Modified
convertFromMessages()inruntime.tsto detect consecutive tool messages and merge them into one message containing alltool_resultblocks.Fixes #375