This record as markdown: /tools/io-tinyfn-tinyfn/word-count.md
What word_count does on TinyFn
AI agents call word_count 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 |
|---|---|---|---|
text | string | Yes | The text to count words in |
Parameters from the server's own tool schema.
Why word_count is rated Low
This is a deterministic utility function that analyzes input text and returns a numeric result. It has no side effects, does not modify data, does not execute code or external operations, and does not involve financial transactions or irreversible actions. It falls squarely in the Read category as a data analysis/retrieval function.
From the tool's definition Tool name 'word_count' and description 'Count words in text' indicate a simple query operation that retrieves a count metric from provided text without modifying, executing external operations, or affecting any data.
Attacks that exploit this kind of access
The rule that runs word_count 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 word_count, this is the rule to start with:
word_count 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 word_count call is checked against it from then on.
Questions about word_count
Count words in text. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
word_count accepts 1 parameter: text. Required: text. 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 word_count: 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.
word_count 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 word_count 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 word_count. 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.
word_count 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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