grayscale_color

Convert color to grayscale.

SERVERTinyFn SOURCEhttps://api.tinyfn.io/mcp/all/

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-tinyfn-tinyfn/grayscale-color.md

WHAT IT DOES

What grayscale_color does on TinyFn

AI agents call grayscale_color to retrieve information from TinyFn 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_color`	string	Yes	Hex color to convert to grayscale

Parameters from the server's own tool schema.

RISK

Why grayscale_color is rated Low

This is a deterministic color conversion utility that reads input color data and returns a transformed representation. It performs no write operations, does not execute arbitrary code, does not delete data, and has no financial impact. It is a safe read-only transformation tool consistent with the server's purpose of providing utility functions for AI agents.

From the tool's definition Tool name 'grayscale_color' and description 'Convert color to grayscale' indicate a pure computation/transformation with no side effects, data modification, or external operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs grayscale_color safely

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

grayscale_color Allowed

grayscale_color 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": {
    "grayscale_color": {}
  }
}

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

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

FAQ

Questions about grayscale_color

What does the grayscale_color tool do? +

Convert color to grayscale. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.

What parameters does grayscale_color accept? +

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

How do I enforce a policy on grayscale_color? +

Register the TinyFn MCP server in PolicyLayer and add a rule for grayscale_color: 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 TinyFn. Nothing to install.

What risk level is grayscale_color? +

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

Can I rate-limit grayscale_color? +

Yes. Add a rate_limit block to the grayscale_color 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 grayscale_color completely? +

Set action: deny in the PolicyLayer policy for grayscale_color. 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 grayscale_color? +

grayscale_color is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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