distance
Calculate Euclidean distance between two points.
This record as markdown: /tools/io-tinyfn-tinyfn/distance.md
What distance does on TinyFn
AI agents call distance 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 |
|---|---|---|---|
x1 | number | Yes | X coordinate of point 1 |
x2 | number | Yes | X coordinate of point 2 |
y1 | number | Yes | Y coordinate of point 1 |
y2 | number | Yes | Y coordinate of point 2 |
Parameters from the server's own tool schema.
Why distance is rated Low
This is a deterministic mathematical utility that reads input parameters (two points) and returns a computed result. It matches the Read category pattern: retrieves/queries data with no side effects. The low severity reflects minimal blast radius—misuse would only produce incorrect calculations, not compromise data, systems, or operations.
From the tool's definition Tool name 'distance' with description 'Calculate Euclidean distance between two points' indicates a pure mathematical computation with no side effects, data modification, or external operations.
Attacks that exploit this kind of access
The rule that runs distance 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 distance, this is the rule to start with:
distance is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect TinyFn, apply this rule, and every distance call is checked against it from then on.
Questions about distance
Calculate Euclidean distance between two points. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
distance accepts 4 parameters: x1, x2, y1, y2. Required: x1, x2, y1, y2. 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 distance: 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.
distance 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 distance 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 distance. 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.
distance 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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