Tools
Fabric hardens Codex OAuth token persistence with atomic writes and cross-process locks
Fabric v1.4.471, released 2026-08-28, persists refreshed Codex OAuth tokens across processes by writing rotated credentials atomically under cross-process locks, and reloads stored tokens before refresh so stale disk values cannot overwrite fresh credentials. It also reuses valid refresh tokens before launching interactive authentication, requiring an account identifier and an unexpired token for that fast path. Concurrent agent processes sharing one Codex credential file were the failure case.
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