Api Endpoint

Avg Interest Rates API

The average interest rate the US Treasury currently pays on its outstanding debt, broken out by security (Treasury Bills, Notes, Bonds, TIPS, FRNs, savings, and the marketable/total aggregates) for the latest reported month, in percent. No ticker needed. A read on the government's cost of borrowing that complements the /treasury-yields curve. Sourced from the US Treasury (FiscalData).

Open interactive test console

Offering

Provider: x402stock.xyz
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Financial Analysis
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402stock.xyz/api/v1/avg-interest-rates
MIME type: application/json
First seen: 2026-10-16T01:50:45.949Z
Last seen: 2026-11-04T16:11:25.827Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85"
  }
]

Observed health

Status: Healthy
Latest latency: 175 ms
Average latency: 321 ms
HTTP status: 402
Last checked: 2026-11-04T16:11:25.822Z
Reachability: 100% over 10 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {}
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "source": {
          "type": "string",
          "const": "us_treasury"
        },
        "as_of": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "series": {
          "type": "string"
        },
        "unit": {
          "type": "string"
        },
        "record_date": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "count": {
          "type": "number"
        },
        "rates": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "security_type": {
                "type": "string"
              },
              "security": {
                "type": "string"
              },
              "avg_interest_rate": {
                "anyOf": [
                  {
                    "type": "number"
                  },
                  {
                    "type": "null"
                  }
                ]
              }
            },
            "required": [
              "security_type",
              "security",
              "avg_interest_rate"
            ],
            "additionalProperties": false
          }
        }
      },
      "required": [
        "source",
        "as_of",
        "series",
        "unit",
        "record_date",
        "count",
        "rates"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "type"
  ]
}