Codex OAuth refresh tokens are single-use and rotate on every refresh.
Sharing them with the Codex CLI / VS Code via ~/.codex/auth.json made
concurrent use of both tools a race: whoever refreshed last invalidated
the other side's refresh_token. On top of that, the silent auto-import
path picked up placeholder / aborted-auth data from ~/.codex/auth.json
(e.g. literal {"access_token":"access-new","refresh_token":"refresh-new"})
and seeded it into the Hermes pool as an entry the selector could
eventually pick.
Hermes now owns its own Codex auth state end-to-end:
Removed
- agent/credential_pool.py: _sync_codex_entry_from_cli() method,
its pre-refresh + retry + _available_entries call sites, and the
post-refresh write-back to ~/.codex/auth.json.
- agent/credential_pool.py: auto-import from ~/.codex/auth.json in
_seed_from_singletons() — users now run `hermes auth openai-codex`
explicitly.
- hermes_cli/auth.py: silent runtime migration in
resolve_codex_runtime_credentials() — now surfaces
`codex_auth_missing` directly (message already points to `hermes auth`).
- hermes_cli/auth.py: post-refresh write-back in
_refresh_codex_auth_tokens().
- hermes_cli/auth.py: dead helper _write_codex_cli_tokens() and its 4
tests in test_auth_codex_provider.py.
Kept
- hermes_cli/auth.py: _import_codex_cli_tokens() — still used by the
interactive `hermes auth openai-codex` setup flow for a user-gated
one-time import (with "a separate login is recommended" messaging).
User-visible impact
- On existing installs with Hermes auth already present: no change.
- On a fresh install where the user has only logged in via Codex CLI:
`hermes chat --provider openai-codex` now fails with "No Codex
credentials stored. Run `hermes auth` to authenticate." The
interactive setup flow then detects ~/.codex/auth.json and offers a
one-time import.
- On an install where Codex CLI later refreshes its token: Hermes is
unaffected (we no longer read from that file at runtime).
Tests
- tests/hermes_cli/test_auth_codex_provider.py: 15/15 pass.
- tests/hermes_cli/test_auth_commands.py: 20/20 pass.
- tests/agent/test_credential_pool.py: 31/31 pass.
- Live E2E on openai-codex/gpt-5.4: 1 API call, 1.7s latency,
3 log lines, no refresh events, no auth drama.
The related 14:52 refresh-loop bug (hundreds of rotations/minute on a
single entry) is a separate issue — that requires a refresh-attempt
cap on the auth-recovery path in run_agent.py, which remains open.
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