A CLI tool that converts natural language descriptions into fully-formed SQL schemas for PostgreSQL, MySQL, and SQLite.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install schema-writer
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install schema-writer using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Schema Writer?
Schema Writer is a developer-centric tool designed to accelerate the database design process by translating plain English into structured SQL. As a key utility within the Openclaw Skills ecosystem, it eliminates the manual labor of writing CREATE TABLE statements, ensuring that types, constraints, and relationships are handled automatically. It is particularly useful for developers who want to maintain focus on application logic rather than database syntax.
This tool supports major relational database systems including PostgreSQL, MySQL, and SQLite. By integrating this into your workflow, you can move from a conceptual idea to a functional database schema in seconds, making it an essential addition for anyone leveraging Openclaw Skills for rapid development.
Schema Writer Use Cases
- Rapidly bootstrapping database schemas for new software projects.
- Prototyping data models directly from natural language requirements.
- Automating the creation of boilerplate SQL for repetitive table structures.
- Translating business requirements into relational database constraints.
How Schema Writer Works
- The user provides a natural language description of the data model via the CLI command.
- The tool processes the text to identify entities, attributes, and table relationships.
- Based on the selected dialect (PostgreSQL, MySQL, or SQLite), the tool maps the entities to appropriate data types.
- It generates a comprehensive SQL script containing CREATE TABLE statements, foreign keys, and indexes.
- The resulting schema is either printed to the console or saved to a specified file.
Schema Writer Setup
Schema Writer requires Node.js 18+ and can be run instantly without a permanent installation using npx.
# Generate a basic schema for PostgreSQL (default)
npx ai-schema "users with email and profile pictures"
# Generate a MySQL schema for a blog
npx ai-schema "authors and posts with categories" --dialect mysql
# Save a SQLite schema to a specific file
npx ai-schema "inventory management system" --dialect sqlite -o db_init.sql
Schema Writer Data Schema & Taxonomy
| Component | Description |
|---|---|
| Supported Dialects | PostgreSQL, MySQL, SQLite |
| Constraint Logic | Automatic Primary Keys, Foreign Keys, and NOT NULL defaults |
| Relationship Mapping | Intelligent detection of One-to-Many and Many-to-Many links |
| Output Type | Raw SQL text compatible with standard database clients |
Schema Writer Advanced Features
- Intelligent relationship detection for automatic foreign key and index creation.
- Dialect-specific data typing to ensure syntax compatibility with specific database engines.
- CLI flags for output redirection, making it highly compatible with automated build pipelines.
- Seamless integration into development workflows that prioritize Openclaw Skills for efficient code generation.
SKILL.md
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