fix(intercept/messages): convert enabled thinking to adaptive for Bedrock Opus 4.7+#281
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fix(intercept/messages): convert enabled thinking to adaptive for Bedrock Opus 4.7+#281dannykopping wants to merge 1 commit into
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…rock Opus 4.7+ Claude Opus 4.7 (and future adaptive-only Bedrock models) reject the legacy thinking.type "enabled" + budget_tokens shape with a 400. Claude Code falls back to that shape when it cannot read the upstream model's capability metadata, which is exactly the case when AI Bridge sits between the client and Bedrock. This is the symmetric counterpart to the adaptive -> enabled conversion added in #225 for older Bedrock models. The new conversion is gated on a bedrockModelRequiresAdaptiveThinking helper that matches Opus 4.7 model IDs (and ARN-style application inference profile names). The effort level is derived from the original budget_tokens / max_tokens ratio using the midpoints of the forward mapping's anchor ratios, so a payload that round-trips through both conversions lands on the same effort level it started with. An explicit output_config.effort already present in the request is preserved. Adaptive-only models support output_config natively (no beta flag), so the field-strip pass is updated to exempt output_config for those models. Fixes #280
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Disclaimer: implemented by a Coder Agent using Claude Opus 4.6
Fixes #280.
Closing in favour of the same change against
coder/coder, since aibridge is now vendored there.