Countinghouse (MCP in-process tooling)

Overview

Countinghouse is a newly launched open-source project that rethinks MCP tool orchestration by allowing tools to call each other in-process instead of routing calls back through the language model.[5] It aims to reduce latency and complexity in tool chains, while keeping the MCP contract. Developers should care because it offers a more efficient architecture for complex tool graphs and agent systems built on MCP.