Product
claude-code-router
An open-source intermediary layer that routes Claude Code requests to other large-model APIs. It supports switching between multiple models and converting request formats.
Timeline (last 90 days)
Oct 19
Most client SDKs or in-house message serializers keep only the OpenAI-standard content and tool_calls fields and discard the non-standard extension field reasoning_content, which is the structural reason the 400 error keeps recurring in projects such as opencode, LangChain and claude-code-router.
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