Does this API still return LIBOR data?
Yes, for archival and legacy analytics. Set benchmark=libor to retrieve the last published LIBOR series; the default benchmark=sofr returns the live SOFR replacement rate.
LIBOR / SOFR API
4 Tenors
History + Spread
SOFR-First
SOFR & LIBOR. One benchmark API.
Latest values, historical windows, and tenor spread analytics for SOFR and archival LIBOR — with basis-point change computed on every response.
1m–12m · tenorsbps · change trackingCustom · date rangesSpread · analytics
Switch benchmarks, instantly.
This calls the live LIBOR/SOFR API. Pick a benchmark and tenor to see the latest value and its basis-point change.
Request builder
Benchmark and tenor in, latest value out.
GET /libor
Spread between tenors
GET /spread with shortTenor and longTenor returns the spread series and latestSpreadBps between any two maturities.
Output preview
Live response from the API, plus the exact request to reproduce it.
Loading live rate...
Why LIBOR / SOFR API
Every benchmark, every tenor.
SOFR-first, LIBOR archival
benchmark=sofr returns the live replacement rate; benchmark=libor returns the last published legacy series.
Basis-point change built in
changeBps is computed on the latest endpoint so you never need to diff observations manually.
Historical windows
GET /history returns a time series with configurable period, plus custom startDate/endDate filtering.
Tenor spread analytics
GET /spread computes the gap between any two tenors, ideal for curve-steepness monitoring.
Flexible sorting
History and spread series support sort=asc or desc so charts and tables get data in the right order.
Catalog discovery
GET /catalog returns every supported benchmark, tenor, and period option for building dynamic pickers.
/api/v1/libor
Endpoints, at a glance.
Latest value, history, spread analytics, and catalog discovery — all GET, all backed by a consistent benchmark and tenor contract.
GET/api/v1/libor
Latest value
Latest benchmark/tenor value and basis-point change, with optional date-range filtering.
GET/api/v1/libor/history
History
Historical points for benchmark/tenor/period, with date-range filtering and sort control.
GET/api/v1/libor/spread
Tenor spread
Spread history and latest spread between two tenors, with date-range filtering and sort control.
GET/api/v1/libor/catalog
Catalog
Supported benchmarks, tenors, and periods.
| Parameter | Type | Required | Description |
|---|---|---|---|
| benchmark | string | no | sofr (default) or libor. |
| tenor | string | no | 1m, 3m, 6m, or 12m. Defaults to 3m. |
| period | string | no | latest, 1y, 5y, or max. Defaults to 1y. |
| startDate / endDate | string | no | Inclusive date bounds (YYYY-MM-DD). |
| shortTenor / longTenor | string | no | Spread endpoint leg tenors. Default to 3m and 12m. |
| sort | string | no | asc (default) or desc for history and spread series. |
Error reference
Failures you can plan for.
Every response includes a success flag and a correlationId for tracing.
400Validation Error
Invalid benchmark, tenor, or period query values.
401Authentication Error
Missing or invalid gateway API key. Send x-api-key or api_key with every request.
404Not Found
Unknown route under /api/v1/libor.
429Rate Limit Error
More than 200 requests in a 15-minute window per IP.
502Processing Error
Unexpected internal processing failure.
Example error response
{
"success": false,
"error": "Invalid query parameters",
"correlationId": "1784850701208-r7wul8jcl"
}FAQ
API questions developers ask first.
Which tenors are supported?
1 month, 3 month, 6 month, and 12 month for both SOFR and LIBOR benchmarks.
How do I get spreads between two tenors?
GET /spread with shortTenor and longTenor returns the spread history in basis points, plus latestSpreadBps for the most recent gap between the two maturities.
Can I filter by a custom date range?
Yes. /history and /spread accept startDate and endDate (YYYY-MM-DD) in addition to the period window, and both support sort=asc or desc.
How do I authenticate requests?
Send your Datpaq API key as an x-api-key header or an api_key query parameter. Keys are created in the Datpaq dashboard and a free tier is included.
Add SOFR and LIBOR data in one request.
Latest values, history, and tenor spreads for SOFR and archival LIBOR, with basis-point change already computed.