A worked example · not your data

What happened when we ran it.

We pointed RippleProof at a demo warehouse with five dbt repositories and asked it to rename one column. Below is everything it did, in order, including the three times it stopped and refused to continue. Nothing here is yours; it is a record of one real run you can read end to end.

$ ripple-proof plan --instruction "rename user_id to customer_id"

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Run log

00:00.4 Read the source schema over MCPanalytics.orders confirms user_id exists and customer_id does not list_schema_fields

00:01.1 Traced lineage and ownership5 reachable assets, 4 with column evidence, 6 review routes get_lineage

00:01.9 Refused: two dbt models claim one assetA naive agent picks one and patches it. The campaign blocks pending a human choice. blocked

00:02.0 A reviewer selected a discovered candidateoperations_primary chosen, operations_shadow retained in the record, hash-bound human

00:02.4 Refused: dashboard reachable, column use unprovenReachability is not usage, so the Looker dashboard gets no invented patch manual review

00:03.6 Generated 8 files across 4 repositories4 SQL model repairs and 4 dbt contract updates 8 files

01:12.8 Executed the repairs in isolation4 dbt roots built the exact expected nodes; a disposable PostgreSQL container renamed and rolled back 4 / 4 roots

01:31.2 Refused: the lineage moved after planningThe cached metadata interface still returned a removed edge; the uncached graph did not stale context

02:04.7 Opened 4 review-only pull requestsRequired checks passing, auto-merge disabled, merging stays human 4 PRs

02:19.3 Recorded approved-for-review in DataHubRead back across 6 assets through a fresh client, explicitly not approved-to-merge 6 / 6 assets

0false repairs across 8 cases

3refusals in this run

8files across 4 repositories

11of 11 audit checks

Next: read the generated code Full evidence record The 14-case corpus

Timings and counts come from the captured campaign bound to manifest 7b907e81. This page replays a completed run; it does not contact DataHub or GitHub.