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fix(translator): map Claude "refusal" stop_reason to content_filter and surface its explanation

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Anthropic's API-level refusal (streaming classifier / ToS) ends the stream
with stop_reason "refusal", stop_details carrying the reason, zero output
tokens and no content blocks. Map refusal to content_filter in both
directions, surface stop_details.explanation as message text, and add
CLAUDE_STOP.REFUSAL to schema.
This commit is contained in:
Welington
2026-09-22 15:25:09 +07:00
parent 1a02713150
commit 0f488c7027
5 changed files with 97 additions and 0 deletions
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5
open-sse/translator/concerns/finishReason.js
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@@ -11,6 +11,10 @@ export function toOpenAIFinish(reason, format) {
case CLAUDE_STOP.MAX_TOKENS: return OPENAI_FINISH.LENGTH;
case CLAUDE_STOP.TOOL_USE: return OPENAI_FINISH.TOOL_CALLS;
case CLAUDE_STOP.STOP_SEQUENCE: return OPENAI_FINISH.STOP;
// A refusal is a blocked turn, not a clean stop: with the default mapping an
// OpenAI client saw finish_reason "stop" and an empty message (9Router logged
// "succeeded", OUT 0) and could not tell it from a real answer.
case CLAUDE_STOP.REFUSAL: return OPENAI_FINISH.CONTENT_FILTER;
default: return OPENAI_FINISH.STOP;
}
case "commandcode":
@@ -55,6 +59,7 @@ export function fromOpenAIFinish(reason, format) {
case OPENAI_FINISH.STOP: return CLAUDE_STOP.END_TURN;
case OPENAI_FINISH.LENGTH: return CLAUDE_STOP.MAX_TOKENS;
case OPENAI_FINISH.TOOL_CALLS: return CLAUDE_STOP.TOOL_USE;
case OPENAI_FINISH.CONTENT_FILTER: return CLAUDE_STOP.REFUSAL;
default: return CLAUDE_STOP.END_TURN;
}
default: