This record as markdown: /tools/io-tinyfn-tinyfn/swap-case.md
What swap_case does on TinyFn
AI agents call swap_case 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 convert |
Parameters from the server's own tool schema.
Why swap_case is rated Low
This is a deterministic text utility that reads input and returns a transformed string. It has no capability to modify data structures, execute code, delete information, or perform any irreversible action. It belongs in the Read category as a data retrieval/transformation tool with minimal risk.
From the tool's definition Tool name 'swap_case' and description 'Swap case of each character' indicate a pure string transformation that returns modified text without side effects, persistent changes, or external operations.
Attacks that exploit this kind of access
The rule that runs swap_case 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 swap_case, this is the rule to start with:
swap_case 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 swap_case call is checked against it from then on.
Questions about swap_case
Swap case of each character. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
swap_case 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 swap_case: 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.
swap_case 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 swap_case 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 swap_case. 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.
swap_case 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.
More on TinyFn, and thousands of servers like it.
This server
Across the catalogue