Pricing

$20.00 / 1,000 file processeds

JSON Schema Generator — Infer Draft-07 Schema from Any JSON

Infer a JSON Schema from a sample via API. Input: a JSON URL or pasted JSON. Output: a draft-07 JSON Schema with types, required fields, nested object and array item schemas, string formats, and detected enums. Cheap flat pay-per-file pricing per inference.

Pricing

$20.00 / 1,000 file processeds

Rating

0.0

(0)

Developer

Anthony Snider

Actor stats

Bookmarked

Total users

Monthly active users

2 days ago

Last modified

JSON Schema Inferer

Turn any JSON sample into a clean, draft-07 JSON Schema in one call.

Live on the Apify Store — run it instantly or call it as an agent tool via Apify MCP.

What you get

Types for every value (string, integer, number, boolean, object, array, null), with unions when samples disagree.
Required fields — object keys are required; for arrays of objects, only keys present in every item are required.
Nested objects & arrays inferred recursively; array item schemas are merged across all elements.
Format detection on strings: date-time, date, email, uri, uuid.
Small enums detected automatically for repeated scalar values in arrays.
Stats per sample: property count, required fields, formats, and enums detected.

Feed it a URL that returns JSON, or paste raw JSON directly. Bulk-friendly — pass arrays of URLs or JSON strings.

Input

{
  "url": "https://jsonplaceholder.typicode.com/users/1",
  "detectFormats": true,
  "detectRequired": true
}

Or paste a sample instead of a URL:

{
  "json": "{ \"id\": 1, \"email\": \"ada@example.com\", \"createdAt\": \"2024-01-15T09:30:00Z\", \"tags\": [\"a\", \"b\"] }"
}

Output

{
  "source": { "type": "json" },
  "rootType": "object",
  "schema": {
    "$schema": "http://json-schema.org/draft-07/schema#",
    "type": "object",
    "properties": {
      "id": { "type": "integer" },
      "email": { "type": "string", "format": "email" },
      "createdAt": { "type": "string", "format": "date-time" },
      "tags": { "type": "array", "items": { "type": "string" } }
    },
    "required": ["id", "email", "createdAt", "tags"]
  },
  "stats": { "properties": 4, "requiredFields": 4, "formatsDetected": 2, "enumsDetected": 0 }
}

Each inferred schema is one file-processed charge.

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