The artefacts produced by the European Central Bank's BIRD project are free and openly available and provided as a public good.
The BIRD project is described at https://www.ecb.europa.eu/stats/ecb_statistics/co-operation_and_standard... , a useful short video overview of the BIRD project is available at https://youtu.be/CUreE2REzvA
The artefacts produced by the BIRD project are a standard input data model and a set of regulatory logic defined in a language called VTL which transforms the input data model into the values required to populate European regulatory reports.
By providing open-source tools for the BIRD project , the Eclipse Free BIRD Tools project hopes to remove barriers to understanding, contribution, trial, and adoption of the BIRD.