password_entropy
Calculate password entropy (bits of randomness).
This record as markdown: /tools/io-tinyfn-tinyfn/password-entropy.md
What password_entropy does on TinyFn
AI agents call password_entropy 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 |
|---|---|---|---|
password | string | Yes | Password to analyze |
Parameters from the server's own tool schema.
Why password_entropy is rated Low
Password entropy calculation is a deterministic read-only operation that takes input data and produces a computed result. There is no data modification, code execution, destructive action, or financial impact. The tool is defensive in nature (helping assess password strength) and has no blast radius beyond returning a numerical analysis result.
From the tool's definition Tool name is 'password_entropy' and description states 'Calculate password entropy (bits of randomness)'. This is a purely analytical/computational function that examines a password input and returns a numeric metric without modifying, executing against…
Risk signalsHandles credentials or secrets (password)
Attacks that exploit this kind of access
The rule that runs password_entropy 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 password_entropy, this is the rule to start with:
password_entropy 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 password_entropy call is checked against it from then on.
Questions about password_entropy
Calculate password entropy (bits of randomness). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
password_entropy accepts 1 parameter: password. Required: password. 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 password_entropy: 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.
password_entropy 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 password_entropy 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 password_entropy. 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.
password_entropy 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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