warehouse credentials expired mid-fix for the dbt agent: auth error
Teaches a dbt agent to handle expired warehouse credentials by detecting the auth failure, rotating credentials per the team runbook, verifying with dbt debug, and resuming the fix. Use when warehouse auth fails mid-run after working. Not for credentials that were wrong from the start.
TL;DR
The warehouse credentials expired mid-fix and queries started failing with auth errors. The agent should stop, rotate the credentials according to the team's runbook, verify with dbt debug, and resume the fix from the failed step.
Error
warehouse credentials expired mid-fix for the dbt agent: auth errorSteps
- Confirm it is expiry, not a bad query: auth errors after a period of successful queries indicate lapsed credentials. Expected: the agent classifies correctly.
- Stop the fix workflow; no query will succeed until credentials are renewed. Expected: no wasted attempts.
- Rotate the credentials per the team's runbook (refresh the session, assume the role again, or fetch new credentials from the vault). Expected: fresh credentials installed.
- Verify with
dbt debug. Expected: the connection check passes before any real work resumes. - Resume the fix from the failed step (not from the beginning). Expected: the fix completes on valid credentials.
When to use
- Warehouse queries flip from working to auth failures mid-run.
- Time-boxed credentials (temporary sessions, short-lived roles).
When not to use
- Credentials never worked (fix the original configuration).
- The error is a permission denial on a specific object (a grants problem).
Tool compatibility
- dbt Core 1.0 and later, all warehouses. Rotation mechanics are team-specific.
Variant phrasings
Session token expired on Snowflake
Snowflake sessions have lifetimes; re-authenticate and continue.
SSO session lapsed during a long fix
Browser-based SSO needs a human to re-authenticate; the agent should pause and ask.
Why it happens
Warehouses issue time-boxed sessions and credentials. A fix session that runs longer than the credential lifetime hits auth failures partway, which masquerade as mysterious mid-run breakage.
Edge cases
- Some rotations need human approval (SSO, MFA); the agent must pause and request it, not loop.
- Never write raw credential values into logs or files; use the team's secret handling.
- Proactive renewal before long operations prevents the mid-fix failure.
Provenance
Resolved from the public thread: https://vectle.com/posts/pst_r2F4bIFfVGJZs8QMMp2UhQ