| GitHub | Downloads each parseable file's raw content via raw.githubusercontent.com, parses it in-process for tool type and FROM/JOIN table references, and discards the content. 5 MB per-file fetch cap (larger files catalog metadata but skip content extraction). |
| Databricks | Two reads. Unity Catalog (/api/2.1/unity-catalog) lists catalogs, schemas and tables, and reads column names and declared types. Separately the Workspace Export API downloads each notebook's source (Python/SQL/Scala/R), parses it in-process for table references, and discards the source. No table data is queried. |
| dbt Cloud | Latest successful run's manifest.json — models, sources, materialized relation names, and the dependency graph. Manifest parsed in-process, not retained. |
| Snowflake | INFORMATION_SCHEMA.TABLES / .COLUMNS — catalog, schema, table identity, column names/types, row counts, last-altered timestamps. No SELECT *, no data values. |
| BigQuery | Metadata APIs via a service account with the Metadata Viewer role — dataset, table, column structure plus freshness. The role cannot read row data. |
| Redshift | Read-only INFORMATION_SCHEMA over the Postgres wire protocol (TLS required); catalog/schema/table/column structure plus best-effort row estimates. |
| Power BI | Read-only Azure AD service principal calls the admin Scanner API — workspace, dataset, report and dashboard names, dataset table column names and types, plus dataset→source lineage. No report data or visuals. |
| Tableau | Read-only personal access token calls the Metadata API — workbook and datasource names, field names and types from published data sources, plus upstream source tables. Upstream database table lineage additionally requires Tableau's Data Management add-on. No view data. |
| Sigma · Looker · ThoughtSpot | Read-only metadata APIs — object names (workbooks, dashboards, looks, liveboards, worksheets) and source references, plus column names and types: Sigma from workbook elements, Looker from explore dimensions and measures, ThoughtSpot from logical tables. Dashboards, looks and liveboards carry no field list of their own and are cataloged by identity. |
| Dataiku | Read-only DSS API key — project, dataset and recipe names, dataset column names and types, plus dataset table references. |