JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
Install
Run one of the commands below, then add the client config underneath.
https://json-validator.api.klymax402.com/mcpClient configuration
Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.
{
"mcpServers": {
"json-validator": {
"url": "https://json-validator.api.klymax402.com/mcp"
}
}
}About this server
JSON Validator API is listed in the Developer Tools category of the MCPNav directory. It is distributed as SSE and can be loaded by any client that speaks the Model Context Protocol.
Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.
Frequently asked questions
What is the JSON Validator API MCP server?＋
JSON Validator API is an MCP server by Br0ski777. JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
How do I install JSON Validator API?＋
Install it with: https://json-validator.api.klymax402.com/mcp. Then add the JSON config to your client's MCP settings and restart the client.
Is JSON Validator API free to use?＋
The MCP server itself is free to install. The source is public on https://github.com/Br0ski777/json-validator-x402. Any third-party API it calls (such as a search or maps API) may require its own key and billing.
Which clients support JSON Validator API?＋
Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.