AI agents call rot13 to retrieve information from TinyFn without modifying anything — 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 ROT13 encode/decode |
Parameters from the server's own tool schema.
ROT13 is a simple reversible character substitution cipher that only transforms input data without creating, modifying, deleting, or executing operations. The tool retrieves/transforms information without side effects, matching the Read category definition.
From the tool's definition Tool name 'rot13' and description 'Apply ROT13 cipher (encoding and decoding are the same operation)' indicate a deterministic encoding transformation with no side effects or data modification.
Attacks that exploit this kind of access
Apply ROT13 cipher (encoding and decoding are the same operation). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
rot13 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 rot13: 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.
rot13 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 rot13 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 rot13. 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.
rot13 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.
rot13 is one line of TinyFn's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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