A Developer's Guide to the GraphQL Schema Validator

The GraphQL Schema Validator is a simple but crucial tool for ensuring your GraphQL schema is syntactically correct. It uses the Schema Definition Language (SDL) to parse your schema and provides real-time feedback, helping you catch errors early in the development process.

Features

• Real-time Validation: The validator checks your schema's syntax as you type. There's no need to click a button.
• Clear Status Indicator: A badge at the top of the editor immediately tells you if your schema is "Valid" or "Invalid".
• Descriptive Error Messages: If there's a syntax error (like a missing type, incorrect keyword, or typo), a detailed error message appears below the editor, making it easy to find and fix the problem.
• Modern Editor: The tool uses the powerful Monaco Editor (the engine behind VS Code) for a familiar editing experience with excellent GraphQL syntax highlighting.

How to Use

1. Paste Your Schema: Enter your GraphQL schema in SDL format into the editor.
2. Check the Status: As you type, watch the badge above the editor.
   • If it's green and says "Valid Schema," your syntax is correct.
   • If it's red and says "Invalid Schema," look at the error message below the editor. It will describe the issue so you can correct your code.

This tool is perfect for a quick sanity check before committing a schema change or for debugging issues when your GraphQL server fails to start.