AI agents call hex_to_hsl to retrieve information from TinyFn without modifying anything — 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 (e.g., #FF5733 or FF5733) |
Parameters from the server's own tool schema.
This is a pure computational transformation tool that converts color format from hexadecimal to HSL color space. It performs no I/O, does not modify persistent state, does not execute external code, and cannot be destructive. It is deterministic and safe—typical of the utility functions described in the server's purpose (math, conversion, validation).
From the tool's definition Tool name 'hex_to_hsl' and description 'Convert hex color to HSL' indicate a data conversion operation that retrieves/transforms color values without side effects.
Attacks that exploit this kind of access
Convert hex color to HSL. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
hex_to_hsl accepts 1 parameter: hex_color. Required: hex_color. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for hex_to_hsl: 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.
hex_to_hsl is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the hex_to_hsl 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.
Set action: deny in the PolicyLayer policy for hex_to_hsl. 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.
hex_to_hsl 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.
hex_to_hsl is one line of TinyFn's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →