AI agents call random_emoji 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 |
|---|---|---|---|
count | integer | — | Number of emojis |
category | string | — | Category: faces, animals, food, nature, objects, all |
Parameters from the server's own tool schema.
The tool performs a read-only operation that returns random emoji data. It has no capacity to modify, delete, or execute operations. The deterministic nature of the server (math, conversion, validation, hashing, encoding, date/time utilities) further confirms this is a simple data retrieval utility. Severity is low because misuse poses minimal risk—an AI agent calling this repeatedly cannot damage systems or data.
From the tool's definition Tool name is 'random_emoji' with description 'Get random emoji(s).' This retrieves/generates data (random emoji characters) with no side effects, modifications, or operations on external systems.
Attacks that exploit this kind of access
Get random emoji(s). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
random_emoji accepts 2 parameters: count, category. 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 random_emoji: 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.
random_emoji 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 random_emoji 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 random_emoji. 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.
random_emoji 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.
random_emoji 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.
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