fed_board_h15_rate_spread
Calculate a time series of one Federal Reserve Board H.15 rate minus another on aligned business dates. Returns both canonical series, component values, percentage-point and basis-point spreads, pagination, provenance, and exact hosted coverage. Use this for '10-year minus 2-year Treasury spread'...
This record as markdown: /tools/io-github-blackboxfoundry-livedatalink/fed-board-h15-rate-spread.md
What fed_board_h15_rate_spread does on Livedatalink
AI agents call fed_board_h15_rate_spread 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 | integer | — | Maximum aligned observations. Default 30. |
offset | integer | — | Aligned observations to skip. Default 0. |
end_date | string | — | ISO date YYYY-MM-DD. |
series_a | string | Yes | Exact H.15 series_name, descriptive name, or Treasury alias such as '10-year Treasury', '2y', or '3-month Treasury'. |
series_b | string | Yes | Exact H.15 series_name, descriptive name, or Treasury alias such as '10-year Treasury', '2y', or '3-month Treasury'. |
start_date | string | — | ISO date YYYY-MM-DD. |
response_format | string | — | Human-readable markdown or machine-readable JSON. Default markdown. |
Parameters from the server's own tool schema.
Why fed_board_h15_rate_spread is rated Low
Even though fed_board_h15_rate_spread only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs fed_board_h15_rate_spread 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 fed_board_h15_rate_spread, this is the rule to start with:
fed_board_h15_rate_spread 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 fed_board_h15_rate_spread call is checked against it from then on.
Questions about fed_board_h15_rate_spread
Calculate a time series of one Federal Reserve Board H.15 rate minus another on aligned business dates. Returns both canonical series, component values, percentage-point and basis-point spreads, pagination, provenance, and exact hosted coverage. Use this for '10-year minus 2-year Treasury spread', 'prime minus fed funds', or 'compare 30-year and 5-year yields'. Treasury aliases such as '10y' and '2y' are accepted. Not a forecast or trading signal. It is categorised as a Read tool in the Livedatalink MCP Server, which means it retrieves data without modifying state.
fed_board_h15_rate_spread accepts 7 parameters: limit, offset, end_date, series_a, series_b, start_date, response_format. Required: series_a, series_b. 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 fed_board_h15_rate_spread: 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.
fed_board_h15_rate_spread 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 fed_board_h15_rate_spread 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 fed_board_h15_rate_spread. 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.
fed_board_h15_rate_spread 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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