Infer a JSON Schema (draft-07) from an example value, walking objects and arrays
Infer a JSON Schema (draft-07) from an example value, walking objects and arrays recursively. Set detectFormat=true to tag strings that look like date-time/date/email/uri/uuid, requireAll=false to leave object properties optional, and additionalProperties=true to allow extra keys.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
634 msmedian answer time
$0.004listed price per call
$0.004price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://jsonschema.openverbs.com/v1/infer
| Category | Code and developer |
|---|---|
| Provider host | jsonschema.openverbs.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.004 | 634 ms |
Example input (from the provider)
{
"body": {
"detectFormat": false,
"requireAll": false,
"sample": "example"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"additionalProperties": {
"description": "Allow properties beyond those seen. Default false.",
"type": "boolean"
},
"detectFormat": {
"description": "Tag recognizable string formats (date-time/date/email/uri/uuid). Default false.",
"type": "boolean"
},
"requireAll": {
"description": "Mark all object properties as required. Default true.",
"type": "boolean"
},
"sample": {
"description": "An example value to infer a schema from (any JSON type)."
}
},
"required": [
"sample"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}