getcompanion-ai/co-mono
1
0
Fork 0
mirror of https://github.com/getcompanion-ai/co-mono.git synced 2026-04-21 04:00:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

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

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

8
packages/ai/src/providers/transform-messages.ts
View file

@ -118,6 +118,14 @@ export function transformMessages<TApi extends Api>(messages: Message[], model:
existingToolResultIds = new Set();
}
// Skip empty assistant messages (no content and no tool calls)
// This handles error responses (e.g., 429/500) that produced no content
// All providers already filter these in convertMessages, but we do it here
// centrally to prevent issues with the tool_use -> tool_result chain
if (assistantMsg.content.length === 0 && toolCalls.length === 0) {
continue;
}
result.push(msg);
} else if (msg.role === "toolResult") {
existingToolResultIds.add(msg.toolCallId);