Anthropic migrated the OAuth token endpoint from
console.anthropic.com/v1/oauth/token (now returns HTTP 404) to
platform.claude.com/v1/oauth/token. The token *refresh* path already
iterated both hosts, but the two initial code-exchange call sites were
hardcoded to the dead console host, so every new Claude OAuth login
failed with 'Token exchange failed: HTTP Error 404: Not Found' and saved
no credentials.
Fix the whole bug class:
- Add _OAUTH_TOKEN_URLS [platform.claude.com, console.anthropic.com] in
agent/anthropic_adapter.py; _OAUTH_TOKEN_URL now points at the live
host for backward-compat with existing imports.
- run_hermes_oauth_login_pure() (CLI flow) iterates the list, first
success wins, mirroring the refresh path.
- hermes_cli/web_server.py (desktop dashboard flow) imports the list and
iterates it too, so the GUI login path is fixed identically.
Probe: console.anthropic.com/v1/oauth/token -> HTTP 404 (gone),
platform.claude.com/v1/oauth/token -> HTTP 400 (alive). Verified a real
Claude MAX OAuth login now succeeds end-to-end.