# ACP is a client protocol, not a control plane

What the Agent Client Protocol standardizes, what it leaves to the host, and how Coding Agent Control Plane composes project, environment, provider, model, and harness before any handshake.

- Published: 2026-07-21
- Category: agentic-systems
- Tags: architecture, coding-agents, security, tooling, workflows
- HTML: https://harnez.ai/posts/coding-agent-control-plane/

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