How to Check the Expiration Date of Granted Codex Reset Credits

In June, Codex's reset mechanism was changed to stackable reset credits. Due to some bugs, three free reset credits were granted in June. Additionally, you can get extra reset credits by inviting friends (up to three times). However, these reset credits are only valid for 30 days, and the Codex interface does not display the specific expiration date for each reset credit.

Here is a simple method to check it.

Ask Codex to Check It Directly

The method is very simple: just send the following prompt to Codex, asking it to use the local credentials to query it itself. Setting the thinking level to medium is sufficient.

Please use the local Codex credentials to check the rate-limit reset credits:

Read `tokens.access_token` from `~/.codex/auth.json` and request the following endpoint:
https://chatgpt.com/backend-api/wham/rate-limit-reset-credits

Requirements:

1. Do not print access_token, refresh_token, cookie, or the full unique ID.
2. Only summarize available_count and the status/title/granted_at/expires_at for each credit.
3. Convert granted_at/expires_at from UTC to local time.
4. If a 401 status code is returned, it means the credentials are invalid or the Authorization header is incorrect.

Example Reply

A total of three credits were granted in June. I have already used one, so it shows two remaining.

Request successful, status code 200.
available_count: 2
Credits:
1. status: available
    title: Full reset (Weekly + 5 hr)
    granted_at: 2026-06-18 08:42:00 
    expires_at: 2026-07-18 08:42:00 

2. status: available
    title: Full reset (Weekly + 5 hr)
    granted_at: 2026-06-27 07:52:00 
    expires_at: 2026-07-27 07:52:00

Reset Credits Granted by OpenAI

A Total of Four Times in June

Granted when the stackable reset mechanism launched: June 12, 2026. Expiration date: July 12, 2026.
Granted due to a bug: June 18, 2026. Expiration date: July 18, 2026.
Granted due to a bug: June 27, 2026. Expiration date: July 27, 2026.

My query results match this record.