Frequent 429 Rate Limit errors when using Codex with Spec-kit for automated development.

@dosu

What issue are you seeing?

I am currently using Codex combined with Spec-kit for automated project development. However, I frequently encounter HTTP 429 (Too Many Requests) errors during the workflow. This interrupts the automation process and prevents Spec-kit from completing the task chain (e.g., during /speckit.specify or /speckit.tasks execution).

What steps can reproduce the bug?

Initialize a project using Spec-kit with Codex as the AI agent (specify init my-project --ai codex).
Run a Spec-kit command, such as /speckit.specify or /speckit.plan, to generate specifications.
Wait for Codex to process the request.
See error: The process fails with a 429 Rate Limit error (often related to RPM or TPM limits).

What is the expected behavior?

_No response_

Additional information

_No response_