Fix MCP Timeouts: Async HandleId Pattern

MCP tools freeze AI agents when external APIs are slow, causing 424 errors. The async handleId pattern returns immediately with a job ID and polls for results without blocking. MCP tool timeout occurs when an AI agent calls a Model Context Protocol (MCP) tool that depends on a slow external API. The tool blocks the agent indefinitely instead of returning an error. The result is a 424 (Failed Dependency) error or a frozen workflow with no user feedback. This post shows the problem with real scena