Validate data against a supplied schema — checks required fields, nested objects

Validate data against a supplied schema — checks required fields, nested objects, arrays, enums, string formats, numeric ranges, lengths, and additional-property rules deterministically, with optional type coercion and repair, returning precise errors with JSON paths so agents can verify structured data before acting on it.

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://netintel.dev/schema/validate

Our checks, last 30 days

Example input (from the provider)

{
  "body": {
    "data": {
      "age": "42",
      "name": "Acme"
    },
    "schema": {
      "age": "number",
      "email": "email",
      "name": "string"
    }
  },
  "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": {
          "properties": {
            "allow_llm": {
              "description": "Default true. Gates the LLM repair fallback only \u2014 validation itself is always deterministic.",
              "type": "boolean"
            },
            "coerce": {
              "description": "Default false. Coerce values to the declared types where lossless (\"5\" \u2192 5, \"yes\" \u2192 true).",
              "type": "boolean"
            },
            "data": {
              "description": "The data to validate: an object, an array, or a JSON string (malformed strings are repaired first). Max 64KB.",
              "type": [
                "object",
                "array",
                "string"
              ]
            },
            "repair": {
              "description": "Default false. When invalid, also return a repaired copy of the data plus is_repaired_valid. Deterministic first (coercion, declared defaults, enum casing, strict extra-key removal).",
              "type": "boolean"
            },
            "schema": {
              "description": "JSON Schema ({\"type\":\"object\",\"properties\":{...},\"required\":[...]}) or a simplified field\u2192type map ({\"age\":\"number\",\"email\":\"email\",\"tags\":\"string[]\",\"bio\":\"string?\"}). In the map form a field is required unless suffixed with '?'. Formats: email, url, date, date-time, uuid, ipv4, ipv6, hostname.",
              "type": "object"
            }
          },
          "required": [
            "data",
            "schema"
          ],
          "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"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "coerced": {
              "type": "boolean"
            },
            "error_count": {
              "type": "number"
            },
            "errors": {
              "type": "array"
            },
            "findings": {
              "type": "array"
            },
            "grade": {
              "type": "string"
            },
            "is_repaired_valid": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "repaired": {
              "type": [
                "object",
                "array",
                "null"
              ]
            },
            "score": {
              "type": "number"
            },
            "valid": {
              "type": "boolean"
            },
            "warnings": {
              "type": "array"
            }
          },
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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