Payload Validator for VS Code

com.gumballtools/payload-validator

Validate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.

client:VS Code transport:streamable-http tools:5

Install Payload Validator in VS Code

.vscode/mcp.json

{
  "servers": {
    "payload-validator": {
      "type": "http",
      "url": "https://payload-validator.gumballtools.com/api/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs