Code Mala Tang

Jun 18, 2026 · Artificial Intelligence

From Tool Calls to Real Execution: Inside Claude Code’s 43‑Tool Scheduling System

The article dissects Claude Code’s tool runtime, detailing how a unified TypeScript interface, a feature‑gated registry, a seven‑stage dispatch pipeline, and a concurrency scheduler transform model‑generated tool_use blocks into safe, parallel or serial system operations, including dynamic MCP extensions.