Recent US Treasury auctions API

List recent US Treasury securities auctions from the keyless US Treasury FiscalData API, normalized into a clean schema (auction/issue/maturity dates, CUSIP, security type and term) with an optional security-type filter. Answers 'what Treasury securities were auctioned recently?','when is the next 8-week bill issued?'.

Price$0.01per request

MethodPOST

Route/v1/gov/treasury-auctions

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache3600s public

govtreasuryauctionbillsnotesbondscusipus

API URLhttps://x402.hexl.dev/v1/gov/treasury-auctions

Integration docs

Example request

{
  "securityType": "Bill",
  "limit": 1
}

Example response

{
  "count": 1,
  "auctions": [
    {
      "auctionDate": "2026-06-04",
      "issueDate": "2026-06-09",
      "maturityDate": "2026-08-04",
      "cusip": "912797US4",
      "securityType": "Bill",
      "securityTerm": "8-Week"
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [],
  "properties": {
    "securityType": {
      "type": "string",
      "examples": [
        "Bill",
        "Note",
        "Bond"
      ]
    },
    "limit": {
      "type": "number",
      "minimum": 1,
      "maximum": 100,
      "default": 20
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}