Returns recent observations for any supported FRED data series. Use this to get current and historical values for mortgage rates, Treasury yields, Fed funds rate, CPI, SOFR, unemployment, GDP, energy prices, and more. Common use cases: - Current 30-yr mortgage rate: series_id=MORTGAGE30US, days=3...
Part of the LastLook Data server.
Free to start. No card required.
AI agents call get_series to retrieve information from LastLook Data without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_series only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"get_series": {}
}
}See the full LastLook Data policy for all 18 tools.
These attack patterns abuse exactly the kind of access get_series gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Returns recent observations for any supported FRED data series. Use this to get current and historical values for mortgage rates, Treasury yields, Fed funds rate, CPI, SOFR, unemployment, GDP, energy prices, and more. Common use cases: - Current 30-yr mortgage rate: series_id=MORTGAGE30US, days=30 - Current Fed funds rate: series_id=FEDFUNDS, days=30 - Current 10-yr Treasury yield: series_id=DGS10, days=30 - Current CPI (inflation): series_id=CPIAUCSL, days=30 - Current WTI crude oil: series_id=DCOILWTICO, days=30 The most recent observation in the returned array is the current value.. It is categorised as a Read tool in the LastLook Data MCP Server, which means it retrieves data without modifying state.
Register the LastLook Data MCP server in PolicyLayer and add a rule for get_series: 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 LastLook Data. Nothing to install.
get_series 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 get_series 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 get_series. 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.
get_series is provided by the LastLook Data MCP server (https://mcp.lastlookdata.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 18 LastLook Data tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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