LLMSchema

LLMSchema is a command-line tool that extracts database schemas into concise Markdown documentation for AI agents.

LLMSchema is a command-line tool and Go library that extracts database schemas into concise Markdown documentation for AI coding agents and LLMs. It supports PostgreSQL, MySQL, and SQLite databases, capturing tables, columns, types, indexes, constraints, and relationships. Users can output a single portable document with an index or generate multiple files with one overview and separate files per table. The tool helps AI agents understand the data model efficiently without overwhelming their context window. It also offers table filtering, exclusion options, and integration with CI or migration scripts.

LLMSchema at a glance

Best for: Software engineer
Runs on: CLI, macOS, Linux, API
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: github.com/tordrt/llmschema

Key features

Extracts schemas into concise Markdown
Supports PostgreSQL, MySQL, and SQLite
Generates single-file or multi-file documentation
Includes table filtering and exclusion
Omit or include table index and database info
Tracks generated files with a hidden manifest
Available as a CLI tool and Go library

Use it for

Provide database schemas to AI coding agents
Generate per-table Markdown files for targeted agent work
Automate schema documentation updates in CI or migrations
Maintain purpose-specific schema subsets with table filters

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