Use this service when you need this capability: validates a supplied canonical JSON value against a supplied bounded JSON Schema locally with normalized deterministic errors.
0.005 USDC per call
x402 V2 exact payment on Base mainnet (eip155:8453) using USDC. The HTTP 402 challenge confirms the exact requirements before an authorized payment.
POST https://signalharness.ai/api/agent/services/json_schema_validate/invokeValidates a supplied canonical JSON value against a supplied bounded JSON Schema locally with normalized deterministic errors.
This service applies bounded processing to the supplied input. Review its schema, result fields, and limits for the exact supported capability.
| Field | Type | Required | Limits |
|---|---|---|---|
| value | object or array or string or number or boolean or null | Required | See the complete OpenAPI schema. |
| schema | object or boolean | Required | See the complete OpenAPI schema. |
{
"value": {
"example": true
},
"schema": {
"type": "object"
}
}{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"additionalProperties": false,
"minProperties": 2,
"maxProperties": 2,
"required": [
"value",
"schema"
],
"properties": {
"value": {
"description": "The bounded JSON value to validate.",
"type": [
"object",
"array",
"string",
"number",
"boolean",
"null"
]
},
"schema": {
"description": "The bounded JSON Schema object or boolean schema.",
"type": [
"object",
"boolean"
]
}
}
}Illustrative output from the canonical adapter fixture and schema. It is not a completed paid execution or a current live observation.
{
"valid": false,
"errors": [
{
"keyword": "example",
"instancePath": "example",
"schemaPath": "example",
"message": "example",
"paramsJson": "example"
}
],
"failingPaths": [
"example"
],
"schemaPaths": [
"example"
]
}{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"additionalProperties": false,
"minProperties": 4,
"maxProperties": 4,
"required": [
"valid",
"errors",
"failingPaths",
"schemaPaths"
],
"properties": {
"valid": {
"type": "boolean"
},
"errors": {
"type": "array",
"minItems": 0,
"maxItems": 64,
"items": {
"type": "object",
"additionalProperties": false,
"minProperties": 5,
"maxProperties": 5,
"required": [
"keyword",
"instancePath",
"schemaPath",
"message",
"paramsJson"
],
"properties": {
"keyword": {
"type": "string",
"minLength": 1,
"maxLength": 128
},
"instancePath": {
"type": "string",
"minLength": 0,
"maxLength": 2048
},
"schemaPath": {
"type": "string",
"minLength": 0,
"maxLength": 2048
},
"message": {
"type": "string",
"minLength": 1,
"maxLength": 2048
},
"paramsJson": {
"type": "string",
"minLength": 2,
"maxLength": 8192
}
}
}
},
"failingPaths": {
"type": "array",
"minItems": 0,
"maxItems": 64,
"items": {
"type": "string",
"minLength": 0,
"maxLength": 2048
}
},
"schemaPaths": {
"type": "array",
"minItems": 0,
"maxItems": 64,
"items": {
"type": "string",
"minLength": 0,
"maxLength": 2048
}
}
}
}Timeout: 3000 ms. Full schemas are in OpenAPI.
This schema-valid request returns the canonical HTTP 402 challenge without executing the service. A payment-capable client validates the challenge, signs only with prior authority and budget, and retries the identical body.
curl -i -X POST https://signalharness.ai/api/agent/services/json_schema_validate/invoke \
-H "Content-Type: application/json" \
--data '{"value":{"example":true},"schema":{"type":"object"}}'