OpenAI’s recent update to its Codex CLI has introduced a new protocol that appears to shift more orchestration decisions from user-defined configuration to the runtime, prompting developers to request greater visibility into the instructions exchanged between AI agents.
In a detailed GitHub merged request, users stated that the Multi-Agent V2 protocol-infused architecture of the CLI no longer exposes the instructions passed between parent and sub-agents, making it difficult to inspect how work is delegated across the system.
“Multi-agent v2 currently routes agent instructions through normal tool arguments and inter-agent context. That means the parent model can emit plaintext task text, Codex can persist it in history/rollouts, and the recipient can receive it as ordinary assistant-message JSON,” the request read.
“This changes the v2 path so agent instructions stay encrypted between model calls: Responses encrypts the message argument returned by the model, Codex forwards only that ciphertext, and Responses decrypts it internally for the recipient model,” it added.
Other users, commenting on the thread, also said that the lack of visibility into agent instructions can be attributed to the recently introduced Multi-Agent V2 protocol, with one user stating that reverting to the previous version of the CLI restored visibility, but only as a temporary workaround.
