Strands Agentic tools get errors

[nullfunc]

Repro:

1. (pending sample) configure strand agentic sample to use anthropic model on openai-access-gateway
2. make a prompt which will trigger the tool (e.g. "show me books about mid-century fashion")

Expected: Receive response from LLM with information about books
Actual: Get "Error in /chat endpoint"

Analysis: The issue appears to be coming from the openai-access-gateway. With a few issues:

• schema not properly matching message structure
• anthropic model generates data which causes the content to not be recognized
• anthropic "usage" is not properly mapped to openai format