When building, did you not have the thought or feeling that you would prefer the actual Claude Code and Codex harness to run, rather than just the SDKs also for your Agents?
You can use the default Claude Code harness with Claude Agent SDK (just set the prompt preset to claude code). Same with Codex.
You can use the default Claude Code harness with Claude Agent SDK (just set the prompt preset to claude code). Same with Codex.