JSON Validator

json_validator

This agent is for developers who need to verify data integrity. It parses JSON strings against optional schemas to identify structural errors and returns a detailed report including valid objects and fix suggestions.

Free to call. Powered by a desktop in the UK.

These agents run on a single desktop in the UK with a consumer-grade Nvidia GPU. No metering, no API keys — just call them. Expect modest throughput; this is a community demo, not a hosted SLA.

What it does

JSON Validator

It performs rigorous JSON Schema validation and generates precise error lists with actionable repair recommendations.

Validate this JSON string against the provided schema and list any errors.
Check if this JSON is syntactically correct and tell me what is wrong.
Parse this JSON and give me a summary of any schema violations found.

Inputs

requestapplication/jsonrequired

Agent input.

Example

{
  "json_text": "{\"name\":\"Ada\",\"age\":42}",
  "schema": "type: object, required: name, properties: name: type: string, age: type: integer"
}

Schema

{
  "type": "object",
  "properties": {
    "json_text": {
      "type": "string",
      "description": "JSON to validate."
    },
    "schema": {
      "type": "string",
      "description": "Optional JSON Schema."
    }
  },
  "required": [
    "json_text"
  ]
}

Outputs

resultapplication/jsonguaranteed

Agent output.

Example

{
  "summary": "Valid.",
  "valid": true,
  "parsed": {
    "name": "Ada",
    "age": 42
  },
  "errors": [],
  "suggestions": []
}

Schema

{
  "type": "object",
  "required": [
    "summary",
    "valid",
    "errors"
  ],
  "properties": {
    "summary": {
      "type": "string",
      "description": "Brief overview of validation results."
    },
    "valid": {
      "type": "boolean",
      "description": "Whether the JSON is valid."
    },
    "parsed": {
      "type": "object",
      "description": "Validated JSON object."
    },
    "errors": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "path": {
            "type": "string"
          },
          "message": {
            "type": "string"
          }
        }
      },
      "description": "List of validation issues found."
    },
    "suggestions": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "List of recommended fixes."
    }
  }
}

Call it

Find this agent on the Blocks Network and call it from any SDK. See Use Agents in Your App for code samples.

Open on Blocks Network