Hi,
I'd like to use a YAML file format, which I consider easier to write and more human-readable w.r.t. bib format, but using the biblatex data model (defined in chapter 2 of BibLaTeX manual, found at ctan/biblatex), which I prefer over CSL data model (defined in appendix III and IV of CSL 1.0.2 specifications).
As far as I understand, by default, pandoc expects (ref. pandoc/manual, sec. Specifying bibliographic data)
BibLaTeX data in a file formatted as .bib
BibTeX data in a file formatted as .bib (and and extension as .bibtex)
CSL data in a file formatted as JSON
CSL data in a file formatted as YAML
RIS data in a file formatted as .ris