AI agents call validate_uuid 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 |
|---|---|---|---|
uuid_str | string | Yes | UUID to validate |
Parameters from the server's own tool schema.
This tool retrieves or queries information (whether a given string is a valid UUID) and returns a result without creating, modifying, deleting, or executing external operations. It is purely a deterministic validation check, consistent with the server's purpose of providing utility functions. No sensitive data exposure, no irreversible actions, no code execution or financial impact.
From the tool's definition Tool name 'validate_uuid' and description 'Validate a UUID' indicate a validation/checking operation with no data modification or side effects. Validation tools are read operations that check format or content without altering state.
Attacks that exploit this kind of access
Validate a UUID. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
validate_uuid accepts 1 parameter: uuid_str. Required: uuid_str. 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 validate_uuid: 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.
validate_uuid 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 validate_uuid 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 validate_uuid. 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.
validate_uuid 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.
validate_uuid 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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