extract_keywords
Extract keywords from text based on frequency.
This record as markdown: /tools/io-tinyfn-tinyfn/extract-keywords.md
What extract_keywords does on TinyFn
AI agents call extract_keywords 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 | Text to extract keywords from |
top_n | integer | — | Number of keywords |
Parameters from the server's own tool schema.
Why extract_keywords is rated Low
This tool performs frequency-based keyword extraction, a pure read operation that analyzes input text and returns results. It has no side effects, does not modify data, execute code, delete anything, or move money. The operation is deterministic and safe for AI agent use.
From the tool's definition Tool name 'extract_keywords' and description 'Extract keywords from text based on frequency' indicate a text analysis operation that retrieves/queries information from provided text without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
The rule that runs extract_keywords 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 extract_keywords, this is the rule to start with:
extract_keywords 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 extract_keywords call is checked against it from then on.
Questions about extract_keywords
Extract keywords from text based on frequency. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
extract_keywords accepts 2 parameters: text, top_n. 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 extract_keywords: 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.
extract_keywords 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 extract_keywords 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 extract_keywords. 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.
extract_keywords 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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