Adds ConverseStream API support to the Bedrock provider, implementing
the StreamingProvider interface. Tokens flow via onChunk callback for
real-time delivery to streaming-capable channels.
- Extract buildConverseParams to share request logic between Chat and ChatStream
- Add converseStreamReader interface for testability
- Preserve raw payload in Arguments on JSON parse failure
- Ensure Function.Arguments is always valid JSON
- Streaming timeout only applied when explicitly configured
- Capture stream Close() errors for diagnostics
- Consistent "bedrock conversestream" / "bedrock:" log prefixes
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add support for AWS Bedrock as an LLM provider using the Converse API.
The implementation is behind a build tag (-tags bedrock) to keep the
default binary size small.
Features:
- AWS SDK v2 with automatic credential chain (env vars, profiles, IAM roles)
- Converse API for unified access to Claude, Llama, Mistral models
- Tool/function calling support with proper document handling
- Image support with base64 decoding and size limits
- Request timeout configuration
- Region validation and endpoint resolution for all AWS partitions
Usage:
go build -tags bedrock
model: bedrock/us.anthropic.claude-sonnet-4-20250514-v1:0
api_base: us-east-1 (or full endpoint URL)
Andy Lo-A-Foe