Schema Maker
Build JSON schemas for LLM function calling, convert REST APIs to OpenAPI 3.1, and design database schemas. Developer-first, no account required.
Free Schema Tools — No Account Required
Function Calling Schema Builder
Generate valid JSON-LD structured data. Copy, download, or share instantly.
Free · No AccountOpenAPI 3.1 Converter
Generate valid JSON-LD structured data. Copy, download, or share instantly.
Free · No AccountDatabase Schema Generator
Generate valid JSON-LD structured data. Copy, download, or share instantly.
Free · No Account