OpenAI Codex OAuth returning 429 errors since March 16 despite full quota
OpenAI Codex OAuth authentication has been failing for users since March 16, with all requests returning 429 "you exceeded your current quota" errors despite dashboards showing full quota availability. This affects ChatGPT Plus subscribers using Codex OAuth with OpenClaw.
Key Details
The issue has been ongoing for 15+ days according to early reporters, with no fix yet from OpenAI. An open GitHub issue (#54615) documents multiple users experiencing identical problems.
Symptoms include:
- Every Codex OAuth request returns 429 "you exceeded your current quota" error
- Codex dashboard shows 100% quota remaining
- ChatGPT web interface works normally
- Re-authenticating doesn't resolve the issue
- Revoking Codex CLI tokens and re-linking doesn't fix it
- Logging out of OpenAI everywhere and reconfiguring doesn't work
- The gateway continues using the same profile hash regardless of user actions
Workarounds
Users have found two practical workarounds:
- Switch default model to Anthropic Claude Sonnet via API key (this incurs costs, unlike the previous ChatGPT Plus subscription access)
- Configure DeepSeek as a fallback provider in agent settings so that when the primary model returns 429 errors, the agent automatically tries DeepSeek instead of failing completely
The root cause remains unclear - it could be an intentional block of third-party OAuth usage by OpenAI or a persistent bug. Users who specifically set up OpenClaw to use their existing ChatGPT subscription through OAuth without paying API costs are currently unable to do so.
📖 Read the full source: r/openclaw
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