fourzerotwo-si

fourzerotwo-si Us Treasury API

US Treasury Fiscal Data: US national debt to the penny, average interest rates on Treasury debt, Treasury exchange rates and daily cash balance.

Documentation GitHub OpenAPI

Operations 5

GET /v1/us-treasury/debt-to-penny US Treasury Fiscal Data: National debt to the penny #

GET /v1/us-treasury/avg-interest-rates US Treasury Fiscal Data: Average interest rates #

GET /v1/us-treasury/operating-cash US Treasury Fiscal Data: Daily cash balance #

GET /v1/us-treasury/gold-reserve US Treasury Fiscal Data: Gold reserve #

GET /v1/us-treasury/exchange-rates US Treasury Fiscal Data: Treasury exchange rates #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/fourzerotwo-si/openapi/fourzerotwo-si-us-treasury-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Fourzerotwo Si Us Treasury API
  version: 1.1.0
  contact:
    url: https://fourzerotwo.si
  description: 'Operations tagged us-treasury across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: us-treasury
  description: 'US Treasury Fiscal Data: US national debt to the penny, average interest rates on Treasury debt, Treasury exchange rates and daily cash balance.'
paths:
  /v1/us-treasury/debt-to-penny:
    get:
      operationId: us_treasury__debt_to_penny
      summary: 'US Treasury Fiscal Data: National debt to the penny'
      description: 'Total public debt outstanding, latest days. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - us-treasury
      externalDocs:
        url: https://fourzerotwo.si/apis/us-treasury/debt-to-penny
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: us-treasury__debt-to-penny
    servers:
    - url: https://fourzerotwo.si
  /v1/us-treasury/avg-interest-rates:
    get:
      operationId: us_treasury__avg_interest_rates
      summary: 'US Treasury Fiscal Data: Average interest rates'
      description: 'Average interest rates on marketable and non-marketable Treasury securities. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - us-treasury
      externalDocs:
        url: https://fourzerotwo.si/apis/us-treasury/avg-interest-rates
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: us-treasury__avg-interest-rates
    servers:
    - url: https://fourzerotwo.si
  /v1/us-treasury/operating-cash:
    get:
      operationId: us_treasury__operating_cash
      summary: 'US Treasury Fiscal Data: Daily cash balance'
      description: 'Treasury General Account operating cash balance, latest days. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - us-treasury
      externalDocs:
        url: https://fourzerotwo.si/apis/us-treasury/operating-cash
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: us-treasury__operating-cash
    servers:
    - url: https://fourzerotwo.si
  /v1/us-treasury/gold-reserve:
    get:
      operationId: us_treasury__gold_reserve
      summary: 'US Treasury Fiscal Data: Gold reserve'
      description: 'US Treasury-owned gold by location, latest. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - us-treasury
      externalDocs:
        url: https://fourzerotwo.si/apis/us-treasury/gold-reserve
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: us-treasury__gold-reserve
    servers:
    - url: https://fourzerotwo.si
  /v1/us-treasury/exchange-rates:
    get:
      operationId: us_treasury__exchange_rates
      summary: 'US Treasury Fiscal Data: Treasury exchange rates'
      description: 'Quarterly Treasury reporting rates of exchange for a country''s currency. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - us-treasury
      externalDocs:
        url: https://fourzerotwo.si/apis/us-treasury/exchange-rates
      parameters:
      - name: currency
        in: query
        required: true
        description: Filter, e.g. country_currency_desc:eq:United Kingdom-Pound
        schema:
          type: string
        example: country_currency_desc:eq:United Kingdom-Pound
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: us-treasury__exchange-rates
    servers:
    - url: https://fourzerotwo.si
components:
  responses:
    PaymentRequired:
      description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
      headers:
        PAYMENT-REQUIRED:
          schema:
            type: string
          description: Base64 JSON x402 v2 PaymentRequired
      content:
        application/json:
          schema:
            type: object
            properties:
              x402Version:
                type: integer
              error:
                type: string
              accepts:
                type: array
                items:
                  type: object
    Error:
      description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
              charged:
                type: boolean
  securitySchemes:
    freeKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json