INDIVIDUAL MCP TOOL

validate_yaml

Validates a YAML document, including the values that mean different things to different YAML loaders.

gumballtools.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://payload-validator.gumballtools.com/api/mcp

No auth detected

Connect to this endpoint to inspect the live schema for validate_yaml and invoke it with your own arguments.

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.payload-validator]
url = "https://payload-validator.gumballtools.com/api/mcp"
enabled = true

Claude Code

.mcp.json

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

Claude Desktop

Settings → Connectors → Add custom connector

Name: payload-validator
Remote MCP URL: https://payload-validator.gumballtools.com/api/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "payload-validator": {
      "url": "https://payload-validator.gumballtools.com/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

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

Generic MCP

Client-specific MCP configuration

{
  "name": "payload-validator",
  "transport": "streamable-http",
  "url": "https://payload-validator.gumballtools.com/api/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

validate_json — Validates a JSON document and reports every problem with an exact line and column.
validate_xml — Validates an XML document for well-formedness, namespace correctness, and the entity-based attacks that arrive as XML.
validate_csv — Validates CSV text against RFC 4180 and reports ragged rows individually, with both field counts.
validate_auto — Detects whether a payload is JSON, YAML, XML or CSV, then validates it.