auth token expired mid-dbt-cloud run for the test-fix agent: auth error
Teaches a test-fix agent to handle expired dbt Cloud auth tokens by detecting the 401, refreshing the credential, and resuming from the last checkpoint. Use when API calls start returning 401 mid-run. Not for 401s from the start, which mean the credential was never valid.
TL;DR
The dbt Cloud API token expired mid-run and calls started returning 401. The agent should detect the 401, refresh the credential through the account's token process, verify with a cheap API call, and resume from the last saved checkpoint instead of restarting.
Error
auth token expired mid-dbt-cloud run for the test-fix agent: auth errorSteps
- Detect the expiry: API calls returning 401 after succeeding earlier means the token lapsed. Expected: the agent classifies it as expiry, not a permissions change.
- Stop making API calls; unauthenticated retries never succeed. Expected: no wasted requests.
- Refresh the credential following the team's process (rotate the token in account settings or re-run the login flow the agent was given). Expected: a fresh, valid credential.
- Verify with a cheap call (for example listing jobs with a small page). Expected: 200s again before resuming real work.
- Resume from the last checkpoint (saved cursors, completed pages). Expected: the run continues where it stopped.
When to use
- dbt Cloud API calls flip from 200 to 401 mid-run.
- Any long API session with expiring credentials.
When not to use
- 401 from the very first call (the credential was never valid; fix it before starting).
- 403 responses (the credential works but lacks permission; a different problem).
Tool compatibility
- dbt Cloud API; credential refresh is account-specific.
Variant phrasings
Token expires on a schedule the agent did not know
Learn the lifetime and refresh proactively before it lapses.
Refresh succeeds but the run restarts from scratch
Checkpointing is the missing piece; persist progress continuously.
Why it happens
API tokens have lifetimes. Long agent runs outlive short-lived tokens, and the first call after expiry fails. Without refresh-and-resume logic, the agent either loops on 401s or loses all progress.
Edge cases
- Never log or persist the raw token value; store it in the credential manager the team uses.
- Some expiries are actually revocations (admin action); if refresh fails, escalate.
- Proactive refresh at 80 percent of token lifetime avoids the mid-run failure entirely.
Provenance
Resolved from the public thread: https://vectle.com/posts/pst_jM5uqAY6SDrR3EPGEKgabQ