SQL Schema Masking for AI — Sanitize Data Before ChatGPT

The AI Schema Masker lets you mask table and column names in SQL and schema definitions before sending them to AI. Your database structure never leaves your browser. Deterministic mapping lets you restore AI-generated SQL to your real identifiers in one click.

How it works: Paste SQL or build a prompt from your schema. Mask identifiers (e.g. tables → T_001, columns → C_001). Send the masked version to AI. Use the mapping to convert AI output back to your real names. 100% client-side, no server, no signup.

Use the tool →

AI Schema Masker

World's first fully client-side SQL identifier masker. Mask tables and columns for AI prompts, then restore the response—all in your browser. No data ever leaves your device.

World's firstclient-side DITE-based SQL masker
100% Data Security—nothing sent to servers
Client-side only—runs entirely in your browser

Mask raw SQL

Paste existing SQL → mask identifiers → send to AI → paste AI response and restore below.

Original input

SQL, procedures,
CTEs, or JSON (up to ~5MB)

Masked output

Copy and send to AI

Restore AI response (use case 1)

Paste the AI's reply from the masked query above

2

Secure AI Prompt Compiler

Schema + instruction → AI-safe prompt. No raw SQL; you define tables and columns, then restore the AI's SQL here.

Tables & columns
Table JOINs (how tables connect)
=
Generated prompt (copy and send to AI)

Restore AI response (use case 2)

Paste the AI's SQL reply from the prompt you sent above

How AI Schema Masker works

100% data security, client-side only. The DITE engine (lexer → contextual extraction → deterministic mapping → token-based transform) runs entirely in your browser; no data leaves your device. Web Worker keeps the UI responsive for large inputs. Your SQL and schemas stay private.