JSON Schema to AI Tool Schema
Wrap any JSON Schema into a ready-to-use function-calling tool.
JSON Schema
AI tool schema
{
"type": "function",
"function": {
"name": "search_docs",
"description": "Search the documentation index.",
"parameters": {
"type": "object",
"properties": {
"query": {
"type": "string",
"description": "Search query"
},
"limit": {
"type": "integer",
"minimum": 1,
"maximum": 50
}
},
"required": [
"query"
],
"additionalProperties": false
},
"strict": true
}
}About the JSON Schema to AI Tool Schema
Paste a plain JSON Schema, add a tool name and description, and export a valid OpenAI, Anthropic, Gemini or MCP tool definition. Strict mode strips unsupported keywords, forces additionalProperties: false and fills the required array so structured outputs validate first time.
Examples
Search schema
JSON{ "type": "object", "properties": { "query": { "type": "string" } } }Output
JSONOpenAI tool with strict: trueKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
Related tools
AI Tool Schema Builder
AI & LLM
Build function-calling schemas for OpenAI, Claude, Gemini, MCP and the AI SDK.
AI Tool Schema Converter
AI & LLM
Convert function-calling schemas between OpenAI, Anthropic, Gemini and MCP.
LLM Structured Output Validator
AI & LLM
Check that a model's JSON reply matches your JSON Schema.
MCP Tool Schema Validator
AI & LLM
Validate Model Context Protocol tool definitions before you ship them.
MCP Tool Schema Generator
AI & LLM
Generate an MCP, OpenAI or Anthropic tool schema from example arguments.
AI Dataset Deduplicator
AI & LLM
Remove exact and near-duplicate rows from fine-tuning datasets.
Frequently asked questions
Read more
- Structured data (JSON-LD) that search engines actually use
Most schema.org types have no effect on search results. Here are the ones that do, and how to mark them up correctly.
Comments
No login needed. Comments appear after a quick review.
Loading comments…
Version 1.0.0 · Updated 2026-08-15 · Runs entirely in your browser