---
title: "Steering in four agents, mapped onto the Agent Client Protocol"
description: "The data of the same comparison, posted where the protocol defines session injection: Codex CLI's steer lands at once, like an interrupt; Claude Code folds a new message in at the next safe boundary."
url: "https://mko.run/notes/2026-09-24-acp-steering/"
language: "en"
published: 2026-09-24
tags: ["acp", "agents", "upstream"]
---
# Steering in four agents, mapped onto the Agent Client Protocol

The data of the same comparison, posted where the protocol defines session injection: Codex CLI's steer lands at once, like an interrupt; Claude Code folds a new message in at the next safe boundary.