Add Codex OAuth troubleshooting note#31
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Codex CLI 0.142.0+ drops the RFC 9207 `iss` parameter from the OAuth callback (openai/codex issue 31573), so `codex mcp login` fails with "Authorization server response missing required issuer" against spec-compliant servers, including the hosted Logfire MCP. Document the failure mode and workarounds. Claude-Session: https://claude.ai/code/session_014iPT6z2qtARBxoKCPgw4wc
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Codex CLI 0.142.0 through at least 0.144.3 drops the RFC 9207
issparameter from the OAuth authorization callback (openai/codex#31573), socodex mcp login logfirefails withAuthorization server response missing required issuerafter the browser shows "Authentication complete". This has been breaking the Install-In-Codex flow for users since late June.Adds a troubleshooting subsection under Install In Codex documenting the failure mode and workarounds (server-side workaround being rolled out to hosted Logfire MCP; downgrade to codex 0.141.0 otherwise).
https://claude.ai/code/session_014iPT6z2qtARBxoKCPgw4wc