check_color_contrast

What check_color_contrast does on GadgetHumans API Hub

AI agents call check_color_contrast to retrieve information from GadgetHumans API Hub without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why check_color_contrast is rated Low

The tool analyzes and returns accessibility data (contrast ratio values) based on input parameters. It has no side effects, does not create or modify data, does not execute code or commands, and does not involve financial or destructive operations. This is a pure utility function for accessibility compliance checking, clearly fitting the Read category.

From the tool's definition Tool 'check_color_contrast' performs a contrast ratio calculation between two colors according to WCAG standards. This is a read-only operation that retrieves or computes accessibility metrics without modifying, deleting, or executing arbitrary operations.

The rule that runs check_color_contrast safely

PolicyLayer is an MCP gateway: it sits between your AI agents and GadgetHumans API Hub, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For check_color_contrast, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_color_contrast": {}
  }
}

Questions about check_color_contrast