x-api-key: ********************curl --location 'https://sugra.ai/api/v2/fixed-income/treasury/curve-analytics?date=undefined' \
--header 'x-api-key: <api-key>'{
"data": {
"date": "2026-06-26",
"real_date": "string",
"spreads": {
"property1": {
"bps": 0,
"inverted": true
},
"property2": {
"bps": 0,
"inverted": true
}
},
"butterflies": {
"property1": 0,
"property2": 0
},
"breakeven": [
{
"tenor": "10Y",
"tenor_months": 120,
"breakeven_bps": 230
}
]
},
"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
}
}