This record as markdown: /tools/io-tinyfn-tinyfn/is-palindrome.md
What is_palindrome does on TinyFn
AI agents call is_palindrome 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 check |
ignore_case | boolean | — | Ignore case |
ignore_spaces | boolean | — | Ignore spaces |
Parameters from the server's own tool schema.
Why is_palindrome is rated Low
This is a deterministic validation/checking function that retrieves information about whether input text meets a palindrome criterion. It performs no writes, deletions, code execution, or financial transactions. Classification as Read is appropriate; severity is low as misuse poses minimal risk to systems or data.
From the tool's definition Tool name 'is_palindrome' and description 'Check if text is a palindrome' indicate a pure query operation that analyzes input text and returns a boolean result with no side effects, data modification, or external operations.
Attacks that exploit this kind of access
The rule that runs is_palindrome 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 is_palindrome, this is the rule to start with:
is_palindrome 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 is_palindrome call is checked against it from then on.
Questions about is_palindrome
Check if text is a palindrome. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
is_palindrome accepts 3 parameters: text, ignore_case, ignore_spaces. 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 is_palindrome: 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.
is_palindrome 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 is_palindrome 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 is_palindrome. 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.
is_palindrome 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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