color_name_lookup

Find the closest named color for a hex code.

SERVERUnClick SOURCE@unclick/mcp-server

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/color-name-lookup.md

WHAT IT DOES

What color_name_lookup does on UnClick

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

Parameter	Type	Required	Description
`hex`	string	Yes	Hex color code (e.g. 'ff5733' or '#ff5733').

Parameters from the server's own tool schema.

RISK

Why color_name_lookup is rated Low

This is a simple lookup utility that queries a color database and returns information. It neither modifies data, executes code, deletes anything, nor involves financial transactions. The operation is read-only and has minimal security impact.

From the tool's definition Tool name 'color_name_lookup' and description 'Find the closest named color for a hex code' indicate a pure data retrieval operation. Takes a hex code input and returns matching color name data with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs color_name_lookup safely

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

color_name_lookup Allowed

color_name_lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every color_name_lookup call is checked against it from then on.

FAQ

Questions about color_name_lookup

What does the color_name_lookup tool do? +

Find the closest named color for a hex code. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.

What parameters does color_name_lookup accept? +

color_name_lookup accepts 1 parameter: hex. Required: hex. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on color_name_lookup? +

Register the UnClick MCP server in PolicyLayer and add a rule for color_name_lookup: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches UnClick. Nothing to install.

What risk level is color_name_lookup? +

color_name_lookup is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit color_name_lookup? +

Yes. Add a rate_limit block to the color_name_lookup rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block color_name_lookup completely? +

Set action: deny in the PolicyLayer policy for color_name_lookup. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides color_name_lookup? +

color_name_lookup is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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