ai-agents-bedrock-llama-body-f-malformed-input-request-error-2-schema-violations--c0014519

THEN Modify the request body to use 'prompt' as the key instead of 'inputText' for the 'meta' provider. In the Bedrock API invocation, ensure the provider-specific mapping is applied—either by updating the LangChain source or overriding the body in a custom wrapper.

# Before (fails): body = {"prompt": ..., "max_gen_len": ...}
# For meta models, the key must be 'prompt' not 'inputText'
body = {"prompt": "Hello!", "max_gen_len": 512, "temperature": 0.2, "top_p": 0.9}
response = client.invoke_model(body=json.dumps(body), modelId='meta.llama2-13b-chat-v1')