AI2SQL
AI SQL assistant that turns plain English into schema-aware queries across 10+ database dialects
💬 What is AI2SQL?
AI2SQL is an AI-powered SQL query assistant that generates, explains, fixes, optimizes, and executes SQL from plain-English requests against a user's actual database schema. It is built for analysts, backend developers, data engineers, and AI agents who need queries that respect a real schema and the right dialect, not a textbook example. A distinguishing feature is its MCP Gateway, which lets tools like Claude, Cursor, and ChatGPT query a database through a single read-only, audited endpoint. It also offers a local Connector app so credentials never leave the user's machine.
Who it's for
Best for: Data analysts, backend developers, and data engineers at small-to-mid teams who write SQL across multiple database dialects and want AI agents to query data safely.
- Translating a business question into a working SQL query on a real schema
- Explaining an inherited or undocumented query clause by clause
- Optimizing slow queries with rewrite suggestions and reasoning
- Fixing syntax errors, dialect mismatches, and wrong column references
- Letting Claude, Cursor, or ChatGPT query a production database read-only via MCP
Pros & cons
- Schema-aware generation uses live tables and columns, not generic examples
- Targets the specific dialect of the connected database
- Read-only enforcement at the gateway blocks writes before they reach the database
- Local Connector keeps credentials on the user's machine
- Supports 10+ database dialects and exposes MCP for major AI agent clients
- Start plan is capped at 100 SQL queries per month
- Local desktop Connector is limited to MySQL, PostgreSQL, and SQL Server
- Read-only by default, so write operations require changing the configuration away from the safe default
- Pricing details and social/community links are not prominently surfaced on the homepage
Key features
- Natural-language to SQL generation grounded in live database schema
- Supports PostgreSQL, MySQL, SQL Server, Oracle, Snowflake, BigQuery, Amazon Redshift, MongoDB, SQLite, and Firebird
- Query explanation, optimization, formatting, and error fixing
- Read-only enforcement at the gateway (writes, DROP, DDL blocked by default)
- MCP endpoint for AI agents (Claude, Cursor, ChatGPT) with per-query auditing and key scoping
- Local desktop Connector (Windows, macOS, Linux) so credentials do not leave the machine
- Team query library for reusable queries
- REST and MCP interfaces for programmatic query execution
Pricing
Pricing compared →Prices listed on the AI2SQL pricing page: $9/mo · $19/mo · $39/mo · $84/yr · $168/yr · $228/yr · $468/yr
Source: ai2sql.io pricing page. Price checked 2026-10-08. Confirm current plans before buying.
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Frequently asked
Does AI2SQL work on my real database schema?
Yes. It connects to your live schema and generates SQL using your actual table and column names rather than a generic example.
Which databases are supported?
PostgreSQL, MySQL, SQL Server, Oracle, Snowflake, BigQuery, Amazon Redshift, MongoDB, SQLite, and Firebird, with the local Connector supporting MySQL, PostgreSQL, and SQL Server.
Is the database access safe for AI agents?
The Gateway enforces read-only at the connection level, blocks writes and DDL by default, logs every query, and lets you revoke keys individually.
Is there a free trial?
Yes. A 7-day free trial is available, and the Start plan begins at $9 per month (or $7/month billed annually).