Step 1
POST to /api/v1/messages with the standard Anthropic-shape request.
Anthropic-shape /messages endpoint over our self-hosted Qwen + vLLM cluster.
Developers already use the Anthropic Messages shape — tools, tool_use, tool_result, strict JSON-schema. We want them to drop their existing client onto our infrastructure without rewriting it.
Underneath is a Qwen 3.6-27B running on our own vLLM cluster — Apache 2.0 weights, no third-party API call.
POST to /api/v1/messages with the standard Anthropic-shape request.
Get strict-schema tool calls validated by xgrammar; cached prefix for system, few-shots, and tool definitions.
Observability and audit identical to our consumer chat surface.
The Messages API surface is shipped, but the production cutover is gated on AWS GPU capacity and signed DPIA — see /models/llm_advisor for the dependency map.