GSW fitted nominal Treasury curve

GET

/api/v2/fixed-income/treasury/gsw-curve

Last modified:2026-07-19 17:02:27

Maintainer:Not configured

OperationId:fixed_income_treasury_gsw_curve

x-mcp-tool:get_treasury_gsw_curve

The Federal Reserve Board GSW (Gurkaynak-Sack-Wright) fitted nominal Treasury yield curve for one day: zero-coupon, par, and instantaneous forward rates at 1Y-30Y, plus the 1y1y and 5y5y forwards. Omit date for the latest published curve (weekly, may lag a few business days), or pass date (YYYY-MM-DD) for on or before. NOTE: a Federal Reserve staff research product, NOT an official statistical release - subject to delay, revision, or methodology change without advance notice.

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location 'https://sugra.ai/api/v2/fixed-income/treasury/gsw-curve?date=undefined' \
--header 'x-api-key: <api-key>'

Responses

🟢200OK

application/json

Zero / par / forward points for the GSW nominal curve.

Bodyapplication/json

Example

{
    "data": {
        "date": "2026-06-26",
        "points": [
            {
                "tenor": "10Y",
                "tenor_months": 120,
                "zero_yield": 0,
                "par_yield": 0,
                "inst_forward": 0
            }
        ],
        "forward_1y1y": 0,
        "forward_5y5y": 0
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "attribution": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true,
        "stale": true
    }
}

🟠401Unauthorized

🟠422Parameter Error

🟠429

🔴503Service Unavailable

Modified at 2026-07-19 17:02:27

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