Route bedrock anthropic models via invoke endpoint #89
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Route Bedrock-hosted Anthropic models (anthropic.* / *.anthropic.*) through the native Anthropic Messages API via the invoke endpoint instead of the lossy Converse API translation. - Add is_bedrock_anthropic_model() detection utility - Add bedrock::anthropic module for invoke endpoint request preparation - Integrate into transform_request: swap target adapter to Anthropic when model is bedrock anthropic, then prepare for invoke endpoint Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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…ormat Instead of special-casing bedrock anthropic models in lingua's transform_request, declare them as format "anthropic" in model_list.json and let the standard adapter pipeline handle translation. The router uses spec.format (not provider.format()) to drive transformation, and the resolver routes bedrock anthropic models to the bedrock provider despite having anthropic format. BedrockProvider dispatches to the invoke/invoke-with-response-stream endpoints for anthropic-format models, using SSE streaming instead of binary event streams. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Avoid double-parsing by running convert_to_anthropic inside transform_request where the Value is already in hand. BedrockProvider now only selects the URL (invoke vs converse), no payload manipulation. - Rename prepare_request -> convert_to_anthropic - Add is_bedrock_anthropic_target one-liner for format+model check - Extract needs_provider_post_processing / provider_post_process helpers Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
model_list.jsonfromformat: "converse"toformat: "anthropic", letting the standard Anthropic adapter handle translation instead of special-casing intransform_requestspec.format(from model catalog) instead ofprovider.format()to drive request transformationinvoke/invoke-with-response-streamendpoints with SSE streaming, while converse-format models use existing converse endpoints with binary event streamsTest plan
cargo test -p lingua --features bedrock,anthropic,openai-- 498 tests passcargo test -p braintrust-llm-router-- 29 tests passcargo clippy -p lingua -p braintrust-llm-router-- clean, no warningsvalidate.ts --format bedrock-anthropic🤖 Generated with Claude Code