Kit by Speakeasy

Kit by Speakeasy is an open-source coding agent runtime that gives AI models a single tool for writing and running programs. It ships as one static binary that includes a terminal client, an Agent Client Protocol (ACP) server, an A2A endpoint, and a subagent orchestrator. Because ACP separates agent clients from agent runtimes, Kit works with compatible editors and can orchestrate other agent harnesses without custom integrations.