Protocol conversion: four APIs, fully connected

Conversion coverage

• All 12 paths between OpenAI Chat Completions, OpenAI Responses, Anthropic Messages and Gemini are available

• An existing SDK can call models served through another protocol

Parameters and errors

• Supports parallel_tool_calls and caller identity

• Unsupported content blocks return a 400 with details about what could not be converted

• Compatibility docs list field mappings for each conversion path