SchemaSentry

SchemaSentry is a web app (with optional Slack integration) that turns messy spreadsheet-based “databases” into governed, no-code tables with real constraints. It lets teams import Google Sheets/CSV, auto-detect entities, and then enforce rules like required fields, unique IDs, allowed values, and relationship integrity—without writing SQL. The killer feature is “Guardrails”: when someone tries to paste junk, duplicate keys, or break a relationship, the system blocks it, explains why, and suggests a fix. It also provides change logs, approvals for schema edits, and a lightweight API for syncing to tools like Zapier/Make. This is not trying to replace Airtable/Notion; it’s a governance layer for teams that already live in spreadsheets but keep suffering from silent data corruption and inconsistent formats.