Create and generate a nested JSON Schema Draft 2020-12 contract by inferring field types and required fields from representative JSON, CSV, TSV, JSON Lines, or YAML records, with equivalent CSV/TSV numeric and null inference, input evidence, and non-enforcing observed bounds.
https://apiacre.com/v1/data/schemaSend the JSON body below. An unpaid request returns HTTP 402 with a PAYMENT-REQUIRED header; an x402-compatible buyer signs the requirement and retries with PAYMENT-SIGNATURE.
Pay $0.025 USDC and run in your browserCoinbase Agentic Wallet can satisfy this x402 request in one command. Running it may pay automatically, so --max-amount is fixed to $0.025 USDC in atomic units. Copying the command does not install, authenticate, sign, or pay; review the request and use a separate low-value wallet before running it.
npx --yes awal@latest x402 pay https://apiacre.com/v1/data/schema \
-X POST \
-d '{"content":"[{\"name\":\"Ada\",\"score\":98}]","format":"json","root_mode":"records"}' \
--max-amount 25000 \
--jsonCoinbase pay-for-service documentation · Buyer setup and wallet safety
Run check first without payment. Its fetch command may automatically pay up to the exact listed price.
npx --yes agentcash@latest check https://apiacre.com/v1/data/schema
npx --yes agentcash@latest fetch https://apiacre.com/v1/data/schema \
--method POST \
--header 'content-type: application/json' \
--body '{"content":"[{\"name\":\"Ada\",\"score\":98}]","format":"json","root_mode":"records"}' \
--payment-protocol x402 \
--payment-network base \
--max-amount 0.025{
"content": "[{\"name\":\"Ada\",\"score\":98}]",
"format": "json",
"root_mode": "records"
}{
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
"service": "data.schema",
"version": "1",
"data": {
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "array",
"x-apiacre-observed": {
"sampleCount": 1,
"presentCount": 1,
"missingCount": 0,
"nullCount": 0,
"types": [
"array"
],
"arrayLength": {
"minimum": 1,
"maximum": 1
}
},
"items": {
"type": "object",
"x-apiacre-observed": {
"sampleCount": 1,
"presentCount": 1,
"missingCount": 0,
"nullCount": 0,
"types": [
"object"
]
},
"properties": {
"name": {
"type": "string",
"x-apiacre-observed": {
"sampleCount": 1,
"presentCount": 1,
"missingCount": 0,
"nullCount": 0,
"types": [
"string"
],
"stringLength": {
"minimum": 3,
"maximum": 3
}
}
},
"score": {
"type": "integer",
"x-apiacre-observed": {
"sampleCount": 1,
"presentCount": 1,
"missingCount": 0,
"nullCount": 0,
"types": [
"integer"
]
}
}
},
"required": [
"name",
"score"
]
}
},
"input": {
"format": "json",
"rootMode": "records",
"records": 1,
"characters": 27,
"utf8Bytes": 27,
"sha256": "c643e5c255c8922bcd1163746ad6233618735d05482f8d2fa68e30021648f076"
},
"inference": {
"version": "apiacre-schema-inference/3",
"dialect": "https://json-schema.org/draft/2020-12/schema",
"csvNumericStringsCoerced": false,
"csvEmptyStringsAsNull": false,
"tabularNumericStringsCoerced": false,
"tabularEmptyStringsAsNull": false,
"nodesProcessed": 4,
"nonStringKeysNormalized": 0,
"dateTimeScalarsNormalized": 0,
"observedBoundsEnforced": false,
"maximumDepth": 20,
"complete": true,
"warnings": []
}
},
"meta": {
"duration_ms": 42,
"cached": false,
"sources": [],
"warnings": [],
"next_actions": [
{
"service": "data.schema-validate",
"title": "JSON Schema validation",
"reason": "Validate a future JSON value against the inferred Draft 2020-12 contract.",
"method": "POST",
"path": "/v1/data/schema-validate",
"price": "$0.01",
"input_template": {
"schema": "$result.data.schema",
"instance": "$futureJsonValue",
"max_errors": 25,
"check_formats": true
},
"use_output": "Require result.data.valid and inspect JSON Pointer errors before accepting the value.",
"handoff_path": "/catalog/data.schema-validate",
"checkout_path": "/try/data.schema-validate",
"sample_path": "/samples/data.schema-validate",
"maximum_atomic_usdc": "10000",
"handoff_payment_required": false,
"executes_automatically": false,
"authorization_required": true
}
]
}
}These buyer-controlled recipes connect this service to compatible API Acre results. Every step has its own exact price and requires separate authorization.
For CSV text up to 500,000 characters, decode a caller-supplied file, remove seven common personal-data pattern classes, profile only the redacted records, and infer a Draft 2020-12 JSON Schema. Pattern redaction supports review but is not a compliance guarantee.
Inspect the 4-step recipeConvert caller-supplied CSV, TSV, JSON, JSON Lines, or YAML into deterministic JSON, infer a Draft 2020-12 schema from the converted records, then validate a caller-supplied future JSON value against that contract. A complete one-call alternative saves $0.005 and 2 authorizations.
Review the one-call quote · Compare both routesApply only explicit deterministic syntax repairs to caller-supplied JSON, infer a Draft 2020-12 schema from the valid result, then validate a future JSON value.
Inspect the 3-step recipeExtract a public page's metadata, then infer a JSON Schema for the normalized result so downstream agents can validate future records.
Inspect the 2-step recipeInfer a Draft 2020-12 contract from representative records, then validate a future JSON value with bounded, machine-readable error pointers.
Inspect the 2-step recipeCalculate deterministic code metrics, then infer a JSON Schema that consumers can use for build reports, dashboards, or regression history.
Inspect the 2-step recipeMerge and deduplicate public RSS or Atom sources, then infer a JSON Schema that downstream agents can use to validate future news snapshots.
Inspect the 2-step recipeThese optional follow-ups use this result in a larger workflow. Each call shows a fresh x402 challenge and requires separate buyer authorization.
Validate a future JSON value against the inferred Draft 2020-12 contract.
Review and run this separate callcurl -i -X POST 'https://apiacre.com/v1/data/schema' \
-H 'content-type: application/json' \
--data '{"content":"[{\"name\":\"Ada\",\"score\":98}]","format":"json","root_mode":"records"}'