frankfurter_currencies
List all currencies supported by the Frankfurter ECB exchange-rate API.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/frankfurter-currencies.md
What frankfurter_currencies does on UnClick
AI agents call frankfurter_currencies to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why frankfurter_currencies is rated Low
This tool performs a read-only operation—it queries and returns a list of currencies from an API. There is no data creation, modification, deletion, code execution, or financial transaction. The blast radius if misused is minimal, as retrieving a public list of supported currencies cannot cause harm or data loss.
From the tool's definition Tool name 'frankfurter_currencies' and description 'List all currencies supported by the Frankfurter ECB exchange-rate API' indicates a query operation that retrieves a static list of supported currencies with no side effects or modifications.
Attacks that exploit this kind of access
The rule that runs frankfurter_currencies safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For frankfurter_currencies, this is the rule to start with:
frankfurter_currencies 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 UnClick, apply this rule, and every frankfurter_currencies call is checked against it from then on.
Questions about frankfurter_currencies
List all currencies supported by the Frankfurter ECB exchange-rate API. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
Register the UnClick MCP server in PolicyLayer and add a rule for frankfurter_currencies: 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 UnClick. Nothing to install.
frankfurter_currencies 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 frankfurter_currencies 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 frankfurter_currencies. 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.
frankfurter_currencies is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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