Fix: Bedrock Application Inference ARN breaks Claude Sonnet tools usage #561
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Description
This PR fixes the issue when running a agent using tools with application inference profile of Claude Sonnet 3.7 as input. Note that using regional inference profile is working well, and only application inference profile (AIP) will not return any tools use information.
Root Cause
Langchain needs to identify the model id of the foundation model but fails to detect the foundation model from the input AIP ARN (e.g.,
arn:aws:bedrock:us-east-1:111111484058:application-inference-profile/c3myu2h6fllr), while regional inference profile contains the foundation model nameus.anthropic.claude-3-7-sonnet-20250219-v1:0and can be easily used to identify the base model id. Therefore, regional inference profile is working well while AIP is not.Solution
To identify the foundation model used in AIP, we need to call Bedrock
get_inference_profilecontrol plane API, and parse the model id from the response.Issue
#535