fix: promote role:system messages from messages array to system param in Bedrock translator - #2189
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nacx merged 4 commits intoJun 10, 2026
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… in Bedrock translator
Some clients (e.g. Claude Code with the mid-conversation-system beta) send system prompts as {"role": "system"} entries in the messages array. The Anthropic SDK does not define a system role constant, so these messages would hit the default case and return an error. This promotes those entries to the top-level system parameter before the message conversion loop.
Signed-off-by: Linus Schlumberger <linus.schlumberger@siemens.com>
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## main #2189 +/- ##
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Coverage 84.73% 84.73%
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Files 144 144
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nacx
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Jun 10, 2026
nacx
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hustxiayang
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Jun 12, 2026
… in Bedrock translator (envoyproxy#2189) **Description** In the Anthropic-to-AWS-Bedrock translator, Claude Code with mid-conversation-system beta sends system prompts as {"role": "system"} in the messages array. The SDK has no system role constant so these hit the default error case. This promotes them to the top-level system param before conversion. Fixes envoyproxy#2206 Signed-off-by: Linus Schlumberger <linus.schlumberger@siemens.com> Co-authored-by: Ignasi Barrera <ignasi@tetrate.io> Signed-off-by: yxia216 <yxia216@bloomberg.net>
hustxiayang
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Jun 16, 2026
… in Bedrock translator (envoyproxy#2189) **Description** In the Anthropic-to-AWS-Bedrock translator, Claude Code with mid-conversation-system beta sends system prompts as {"role": "system"} in the messages array. The SDK has no system role constant so these hit the default error case. This promotes them to the top-level system param before conversion. Fixes envoyproxy#2206 Signed-off-by: Linus Schlumberger <linus.schlumberger@siemens.com> Co-authored-by: Ignasi Barrera <ignasi@tetrate.io> Signed-off-by: yxia216 <yxia216@bloomberg.net>
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Description
In the Anthropic-to-AWS-Bedrock translator, Claude Code with mid-conversation-system beta sends system prompts as {"role": "system"} in the messages array. The SDK has no system role constant so these hit the default error case. This promotes them to the top-level system param before conversion.
Fixes #2206
⚒️ with ❤️ by @siemens