Tutorial: driving Gemini CLI via ACP with JSON-RPC over stdio

On October 24, 2026, a tutorial was published on DEV Community's AI section explaining how to drive Gemini CLI over JSON-RPC. The piece opens by walking through Agent Client Protocol (ACP) and argues that parsing a terminal UI to guess what an agent is doing breaks every time the agent redraws its screen, which is why ACP is presented as a more structured way for editors and third-party agents to communicate than ANSI escape codes.

The worked example is the author's own implementation, written in roughly 70 lines of Python. It launches and calls gemini --acp over JSON-RPC on stdio, and walks through the four request and response read paths between the editor and the agent, illustrating how ACP lets a third-party agent plug into an editor. The article also cautions that the example's applicability depends on how far ACP support actually extends.

No follow-up developments after the publication are covered in the available material, so the tutorial stands as a single self-contained walkthrough of wiring Gemini CLI to an editor through ACP, with the approach and its limits described by its author.