> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vistazo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# U.S. Treasury

> Federal debt, spending & rates

U.S. federal fiscal data — daily national debt, monthly spending vs. revenue and the deficit, and average interest rates on Treasury securities.

Data from the U.S. Treasury Fiscal Data API (fiscaldata.treasury.gov). Upstream API: [fiscaldata.treasury.gov](https://fiscaldata.treasury.gov/).

**Endpoint** `https://mcp.vistazo.ai/treasury/mcp`

| Tool                                            | What it does         |           |
| ----------------------------------------------- | -------------------- | --------- |
| [`national_debt`](#national_debt)               | National debt        | Read-only |
| [`spending_and_revenue`](#spending_and_revenue) | Spending and revenue | Read-only |
| [`interest_rates`](#interest_rates)             | Interest rates       | Read-only |

## national\_debt

`Read-only` · `Reaches outside Vistazo`

Daily U.S. national debt — total public debt outstanding with the public vs. intragovernmental split, one row per day (\{date, total\_debt, public\_debt, intragov\_debt}). Chart as a trend line, or the split as a stacked area. Defaults to the trailing year.

## spending\_and\_revenue

`Read-only` · `Reaches outside Vistazo`

Monthly federal receipts vs. outlays and the resulting deficit/surplus — one row per month (\{date, receipts, outlays, deficit, surplus}). Chart receipts + outlays as two lines, or the balance as bars. `deficit` is positive when outlays exceeded receipts; `surplus` is its negation. Defaults to the trailing \~2 years.

## interest\_rates

`Read-only` · `Reaches outside Vistazo`

Monthly average interest rates the U.S. pays on its debt, by security type — one row per month with a percent column per selected security (Treasury Bills, Notes, Bonds, …). Chart as multi-series lines. Defaults to Bills/Notes/Bonds over the trailing \~3 years.