Deutsche Bundesbank — Yields by ISIN (BBSSY)

Official time series from the Deutsche Bundesbank providing yields by ISIN, published under the BBSSY dataflow via the SDMX 2.1 REST interface. A single endpoint serves data in multiple formats, including SDMX-ML (XML), CSV and JSON, and requests can be narrowed to specific series using a key path together with startPeriod, endPeriod and lastNObservations filters. The dataset is part of the Bundesbank's broader time series database covering German economic and financial statistics, and is useful for analysts and researchers tracking bond yields at the individual security level.Yields by ISIN (BBSSY) — official time series from the Deutsche Bundesbank, published as the BBSSY dataflow over SDMX 2.1 REST. One endpoint serves XML (SDMX-ML), CSV (?format=csv) and JSON (?format=json); extract exactly the series you need with a key path and startPeriod / endPeriod / lastNObservations filters.