Autonomous agents with MCP tools now run a bounded tool-use loop: the model may
call tools (executed via the gateway, results fed back) until it returns a final
answer. Gated/DraftOnly agents get the tool catalog as data but never auto-call —
a human-in-the-loop agent never autonomously reaches an external tool.
Extends IModelClient with tool definitions and a tool-use conversation, adds the
OpenAI-compatible tool serialization/parsing plus a deterministic "tooluse" stub
client, and records every tool call in the run trace.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
soroush.asadi