This record as markdown: /tools/io-tinyfn-tinyfn/trim.md
What trim does on TinyFn
AI agents call trim 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 trim |
Parameters from the server's own tool schema.
Why trim is rated Low
This is a deterministic string utility function that takes input text and returns a transformed version with whitespace removed. It neither reads from external sources, modifies stored data, executes code, deletes anything, nor moves money. It is a simple, reversible text processing function with minimal security risk.
From the tool's definition Tool name 'trim' and description 'Trim whitespace from text' indicate a pure string transformation operation with no side effects, no data persistence, no external calls.
Attacks that exploit this kind of access
The rule that runs trim 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 trim, this is the rule to start with:
trim 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 trim call is checked against it from then on.
Questions about trim
Trim whitespace from text. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
trim 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 trim: 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.
trim 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 trim 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 trim. 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.
trim 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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