Does GROQ Vision have schema documentation and autocomplete like GraphQL?

Yes! The Vision plugin does have features to help you construct queries, though they work differently than GraphQL Playground's schema introspection and autocomplete.

What Vision offers:

According to the Vision plugin documentation, Vision provides:

• Query execution and testing - Test GROQ queries directly against your datasets with immediate results
• Dataset, API version, and perspective selectors - Dropdown menus to easily switch contexts
• Parameter support - Test queries with parameters (like $minSeats) just like in production code
• Direct API URL generation - Each query generates the actual API endpoint URL

However, Vision doesn't have built-in schema documentation or autocomplete like GraphQL Playground does.

For autocomplete and better IntelliSense:

The best developer experience for writing GROQ queries comes from the Sanity VS Code extension, which provides:

• Syntax highlighting for GROQ queries
• IntelliSense/autocomplete when using defineQuery or groq template literals in your code
• Query execution directly from VS Code
• Integration with Sanity TypeGen for automatic type generation and type-safe queries

Why GROQ works differently:

Unlike GraphQL which requires a predefined schema for introspection, GROQ queries JSON documents directly without requiring schema definitions. This is actually one of GROQ's strengths - it can parse and query any JSON structure. However, this means there's no centralized schema to auto-generate documentation from.

Practical workarounds:

1. View actual documents in Vision - You can see your real data structure and available fields
2. Reference your Studio schema files - Your schema definitions in sanity.config.js/ts document your content structure
3. Use the _type field - Filter by document type to explore different content structures
4. Try groq.dev - A standalone GROQ playground for experimenting (though it won't have your project's data)

Bottom line: For the autocomplete/schema-aware experience you're looking for, I'd recommend using the VS Code extension for writing queries in your codebase, and Vision for quick testing against your actual data. The combination gives you a powerful workflow even though it's structured differently than GraphQL Playground.