Validate JSON data against a bounded JSON Schema Draft 2020-12 contract for nested objects, arrays, required properties, types, enums, formats, lengths, patterns, and numeric bounds; return deterministic instance and schema JSON Pointers, explicit error truncation, input hashes, and no remote reference resolution.
https://apiacre.com/v1/data/schema-validateSend 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 $0.01 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 $0.01 USDC in atomic units. Copying the command does not install, authenticate, sign, or pay; review the request and use a separate low-value wallet before running it.
npx --yes awal@latest x402 pay https://apiacre.com/v1/data/schema-validate \
-X POST \
-d '{"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"name":{"type":"string","minLength":1},"score":{"type":"integer","minimum":0}},"required":["name","score"],"additionalProperties":false},"instance":{"name":"Ada","score":"98"},"max_errors":25,"check_formats":true}' \
--max-amount 10000 \
--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-validate
npx --yes agentcash@latest fetch https://apiacre.com/v1/data/schema-validate \
--method POST \
--header 'content-type: application/json' \
--body '{"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"name":{"type":"string","minLength":1},"score":{"type":"integer","minimum":0}},"required":["name","score"],"additionalProperties":false},"instance":{"name":"Ada","score":"98"},"max_errors":25,"check_formats":true}' \
--payment-protocol x402 \
--payment-network base \
--max-amount 0.010{
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"name": {
"type": "string",
"minLength": 1
},
"score": {
"type": "integer",
"minimum": 0
}
},
"required": [
"name",
"score"
],
"additionalProperties": false
},
"instance": {
"name": "Ada",
"score": "98"
},
"max_errors": 25,
"check_formats": true
}{
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
"service": "data.schema-validate",
"version": "1",
"data": {
"valid": false,
"schemaValid": true,
"instanceValid": false,
"errorCount": 1,
"errorCountExact": true,
"errorsReturned": 1,
"errorsTruncated": false,
"errors": [
{
"kind": "instance",
"instancePath": "/score",
"schemaPath": "/properties/score/type",
"keyword": "type",
"message": "'98' is not of type 'integer'"
}
],
"schema": {
"dialect": "https://json-schema.org/draft/2020-12/schema",
"declaredDialect": "https://json-schema.org/draft/2020-12/schema",
"utf8Bytes": 224,
"sha256": "9565a3dfc9aaadfaf2b3163f433b954d7d91246b6c225c11a8c16fe42ae841e4",
"remoteReferencesAllowed": false
},
"instance": {
"utf8Bytes": 27,
"sha256": "43d117eb76b608a0d05820c70320889a6577ff85446e00412b6e6487c1559149"
},
"validation": {
"engine": "python-jsonschema",
"engineVersion": "4.26.0",
"draft": "2020-12",
"formatChecking": true,
"maxErrors": 25,
"networkRequestsMade": false
}
},
"meta": {
"duration_ms": 42,
"cached": false,
"sources": [],
"warnings": [],
"next_actions": [
{
"service": "data.schema",
"title": "JSON Schema generator",
"reason": "Infer the rejected instance's observed Draft 2020-12 shape for comparison with the intended schema.",
"method": "POST",
"path": "/v1/data/schema",
"price": "$0.025",
"input_template": {
"content": "$json($request.instance)",
"format": "json",
"root_mode": "preserve"
},
"use_output": "Run when this result.data.instanceValid is false, then compare the follow-up result.data.schema with the caller's intended contract; inference does not repair the instance or replace that contract.",
"handoff_path": "/catalog/data.schema",
"checkout_path": "/try/data.schema",
"sample_path": "/samples/data.schema",
"maximum_atomic_usdc": "25000",
"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.
Convert 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 $0.005 and 2 authorizations.
Review the one-call quote · Compare both routesApply only explicit deterministic syntax repairs to caller-supplied JSON, infer a Draft 2020-12 schema from the valid result, then validate a future JSON value.
Inspect the 3-step recipeInfer a Draft 2020-12 contract from representative records, then validate a future JSON value with bounded, machine-readable error pointers.
Inspect the 2-step recipeThese optional follow-ups use this result in a larger workflow. Each call shows a fresh x402 challenge and requires separate buyer authorization.
Infer the rejected instance's observed Draft 2020-12 shape for comparison with the intended schema.
Review and run this separate callcurl -i -X POST 'https://apiacre.com/v1/data/schema-validate' \
-H 'content-type: application/json' \
--data '{"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"name":{"type":"string","minLength":1},"score":{"type":"integer","minimum":0}},"required":["name","score"],"additionalProperties":false},"instance":{"name":"Ada","score":"98"},"max_errors":25,"check_formats":true}'