This record as markdown: /tools/io-tinyfn-tinyfn/random-boolean.md
What random_boolean does on TinyFn
AI agents call random_boolean 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 |
|---|---|---|---|
count | integer | — | Number of booleans to generate |
true_weight | number | — | Probability of True (0.0 to 1.0) |
Parameters from the server's own tool schema.
Why random_boolean is rated Low
This tool is purely generative and deterministic in nature—it returns a random boolean without reading, writing, modifying, or deleting any state. It has no capacity to affect systems, data, or financial resources. It falls squarely into the Read category as a value-generation operation with no blast radius.
From the tool's definition Tool generates random boolean value(s) with no side effects, no data modification, and no external operations triggered.
Attacks that exploit this kind of access
The rule that runs random_boolean 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 random_boolean, this is the rule to start with:
random_boolean 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 random_boolean call is checked against it from then on.
Questions about random_boolean
Generate random boolean value(s). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
random_boolean accepts 2 parameters: count, true_weight. 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_boolean: 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_boolean 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_boolean 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_boolean. 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_boolean 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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