⚡ Function Calling Schema Generator

Build tool definitions for LLMs — OpenAI, Anthropic, generic JSON Schema

🧩 Function Builder

required fields *

📋 Parameters

📄 Generated Schemas

Real‑time Validated
OpenAI 
{
  "type": "function",
  "function": {
    "name": "get_weather",
    "description": "...",
    "parameters": {}
  }
}
Anthropic 
{
  "name": "get_weather",
  "description": "...",
  "input_schema": {}
}
JSON Schema 
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {}
}