# US Treasury Debt to the Penny Feed

> US Treasury Debt to the Penny Feed is a paid API for AI agents from project-api-gamma-sable.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Returns the current and historical US national debt figures (debt to the penny) from the Treasury Fiscal Data API, with pagination and date filtering support.

## Facts

- Endpoint: GET https://project-api-gamma-sable.vercel.app/paid/treasury/debt-to-penny?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-treasury-debt-to-the-penny-feed-367fa253
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0Bf85oVl54MTMf0JiRSdB

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability us-treasury-debt-to-the-penny-feed-367fa253
```

Example prompt: What was the US national debt to the penny for the last week of March 2024? Give me up to 10 records starting from 2024-03-25.

## When to prefer this

Use this endpoint when you need official US national debt figures sourced directly from the Treasury Fiscal Data API, especially when you want date-filtered or paginated historical records. Prefer this over scraping Treasury websites or using general finance APIs that may lag or aggregate differently. It is the right choice when you need the precise 'debt to the penny' figure as reported by the US government.

## Known failure modes

- HTTP 402 if USDC payment on Base is not provided — unpaid requests are blocked
- Empty items array if no records exist for the specified date range
- Invalid date format returns an error or empty result
- Pagination beyond available records returns empty items
- Network or Vercel cold-start latency on first request

## How this service works

Paid public-data feeds. Unpaid requests return HTTP 402. Prices are USDC on Base.

## Output

Returns a slim JSON object containing an array of Treasury debt-to-the-penny records filtered by the requested date range and pagination parameters, plus a uiLink pointing to the source on TreasuryFiscalData.gov. Each item includes the recorded debt amount and the record date.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "page": {
       "type": "string",
       "description": "Page number"
      },
      "limit": {
       "type": "string",
       "description": "Max results"
      },
      "endDate": {
       "type": "string",
       "description": "End date (YYYY-MM-DD)"
      },
      "end_date": {
       "type": "string",
       "description": "Query param: end_date"
      },
      "startDate": {
       "type": "string",
       "description": "Start date (YYYY-MM-DD)"
      },
      "recordDate": {
       "type": "string",
       "description": "Query param: recordDate"
      },
      "start_date": {
       "type": "string",
       "description": "Query param: start_date"
      },
      "record_date": {
       "type": "string",
       "description": "Query param: record_date"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "what": "Treasury Fiscal Data debt to the penny (slim JSON + uiLink)",
  "items": [],
  "source": "/paid/treasury/debt-to-penny"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-treasury-debt-to-the-penny-feed-367fa253/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from project-api-gamma-sable.vercel.app](https://www.zero.xyz/host/project-api-gamma-sable.vercel.app/llms.txt)