Description
Sending an image attachment via Discord results in a ValidationException error from the kiro-cli ACP backend, even though openab 0.7.0 successfully downloads, resizes, compresses, and base64-encodes the image.
Environment
- openab chart: 0.7.0
- openab image:
ghcr.io/openabdev/openab:94253a5
- kiro-cli: 1.29.5
Reproduction Steps
- Deploy openab 0.7.0 with kiro agent (
kiro-cli acp --trust-all-tools)
- Enable debug logging:
RUST_LOG=debug
- Send a message with an image attachment (tested with
image/webp) in the configured Discord channel
- Bot responds with:
⚠️ Internal Error (code: -32603) Internal error
Error Log
{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":"Encountered an error in the response stream: request_id: 7994620f-3062-4099-984c-9922a151076d, error: An unknown error occurred: ValidationException"},"id":3}Analysis
openab correctly:
- Downloads the image from Discord CDN
- Resizes and compresses it (via the
image crate)
- Base64-encodes and sends it as an ACP
ContentBlock::Image { media_type, data } in the session/prompt request
The error originates from kiro-cli forwarding the prompt to the LLM API (Bedrock). The ValidationException suggests kiro-cli 1.29.5 either:
- Does not support
image type content blocks in ACP prompts
- Or constructs the LLM API request incorrectly when image blocks are present
Expected Behavior
The bot should process the image and respond with a description or acknowledgment of the image content.
Description
Sending an image attachment via Discord results in a
ValidationExceptionerror from the kiro-cli ACP backend, even though openab 0.7.0 successfully downloads, resizes, compresses, and base64-encodes the image.Environment
ghcr.io/openabdev/openab:94253a5Reproduction Steps
kiro-cli acp --trust-all-tools)RUST_LOG=debugimage/webp) in the configured Discord channel⚠️ Internal Error (code: -32603) Internal errorError Log
{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":"Encountered an error in the response stream: request_id: 7994620f-3062-4099-984c-9922a151076d, error: An unknown error occurred: ValidationException"},"id":3}Analysis
openab correctly:
imagecrate)ContentBlock::Image { media_type, data }in thesession/promptrequestThe error originates from kiro-cli forwarding the prompt to the LLM API (Bedrock). The
ValidationExceptionsuggests kiro-cli 1.29.5 either:imagetype content blocks in ACP promptsExpected Behavior
The bot should process the image and respond with a description or acknowledgment of the image content.