JSON Validator API MCP Server

JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.

Local serverstdio

What is the JSON Validator API MCP Server?

JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.

What you get

JSON validator with optional JSON Schema validation and structure stats. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

ToolWhat it does
data_validate_jsonPOST

How to install the JSON Validator API MCP Server

{
  "mcpServers": {
    "json-validator": {
      "url": "https://json-validator.api.klymax402.com/mcp"
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

  • “Use JSON Validator API to data validate json.”

Frequently asked questions

JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.