A cleaning plan you can inspect.
Choose local cleaning for a complete private CSV export, a temporary Loam workspace for a bounded regional preview, or governed Loam for durable permissioned work.
Local mode is recommended
Choose a CSV up to 20 MB, 100,000 rows, and 500 columns. Parsing, profiling, every plan step, preview, undo, fuzzy suggestions, and full CSV export happen in this browser without upload.
Build and export locally
Select columns, add whitespace, case, null, or deduplication steps, and review their explicit order. Export downloads a new CSV without overwriting the source. Formula-like values are prefixed with an apostrophe so common spreadsheets keep them as text.
Temporary Loam preview
Choose temporary mode explicitly for a direct Loam upload. The Worker creates one private leased Namespace; the service key remains server-side and the exact-Namespace token stays only in page memory. The browser uploads directly to the pinned object store and calls ordinary Loam regional APIs. The Namespace expires after 24 hours by default, never later than 7 days, and activity does not extend it. Reloading or disconnecting loses access; the visitor cannot retain the Namespace.
Temporary limits
Temporary plans support lowercase, uppercase, and exact-row deduplication. Loam computes source/output counts and shows up to 100 rows. Ordinary query responses fail above 10,000 rows or 16 MiB, and temporary access cannot save a view or download a full large result. Use local mode for full CSV export or governed Loam for a durable cleaned view.
Governed Loam and Claude
Login with Loam is optional identity, not a requirement for either anonymous mode and not a way to retain a temporary Namespace. Open Loam for governed cleaning under current workspace permissions. Claude uses Loam's existing connector and MCP resource; this site has no MCP or ordinary-data proxy.