treasury_exchange_rates
Official US Treasury Reporting Rates of Exchange (the rates US government agencies use to convert foreign currency balances to dollars). Published quarterly. Provide a country or currency to filter, e.g. 'Canada', 'Euro', 'Yen'.
This record as markdown: /tools/io-github-blackboxfoundry-livedatalink/treasury-exchange-rates.md
What treasury_exchange_rates does on Livedatalink
AI agents call treasury_exchange_rates to retrieve information from Livedatalink 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 |
|---|---|---|---|
limit | number | — | Max rows to return. |
query | string | — | Country or currency name to match, e.g. 'Canada', 'Euro Zone', 'Japan'. |
Parameters from the server's own tool schema.
Why treasury_exchange_rates is rated Low
This tool retrieves publicly available, read-only financial reference data (exchange rates) published by the US Treasury. It has no side effects, cannot modify data, execute code, delete records, or move money. Users query it to access existing rate information. While it touches the financial domain, it is purely informational and presents no financial risk of its own—it is a reference tool, not a transaction tool.
From the tool's definition Tool description indicates it 'Published quarterly' official rates and allows users to 'Provide a country or currency to filter' - these are query operations that retrieve and present pre-published data.
Attacks that exploit this kind of access
The rule that runs treasury_exchange_rates safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Livedatalink, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For treasury_exchange_rates, this is the rule to start with:
treasury_exchange_rates 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 Livedatalink, apply this rule, and every treasury_exchange_rates call is checked against it from then on.
Questions about treasury_exchange_rates
Official US Treasury Reporting Rates of Exchange (the rates US government agencies use to convert foreign currency balances to dollars). Published quarterly. Provide a country or currency to filter, e.g. 'Canada', 'Euro', 'Yen'. It is categorised as a Read tool in the Livedatalink MCP Server, which means it retrieves data without modifying state.
treasury_exchange_rates accepts 2 parameters: limit, query. The full parameter table on this page comes from the server's own tool schema.
Register the Livedatalink MCP server in PolicyLayer and add a rule for treasury_exchange_rates: 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 Livedatalink. Nothing to install.
treasury_exchange_rates 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 treasury_exchange_rates 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 treasury_exchange_rates. 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.
treasury_exchange_rates is provided by the Livedatalink MCP server (https://livedatalink.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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