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Use explain when CI or a hook prints a SUPA_* diagnostic code. The command prints the built-in diagnostic summary without opening a browser.

Run it

Arguments

string
Required diagnostic code. Matching is case-insensitive.

Exit codes

Diagnostics

Browse documented diagnostic families.

Check

Understand safety diagnostics.

Verify

Understand convergence diagnostics.

Migrations

Understand history diagnostics.
Last modified on June 16, 2026