Hi,

You can use NCBI Datasets to retrieve metadata from those assemblies. You have multiple ways of achieving what you need. For simplicity, I'll post two options:

1. You can download the entire metadata report and process it using either dataformat or jq. I'm assuming you have a text file with all the assemblies you need metadata for, one per line.

datasets summary genome accession --inputfile assemblies.txt --as-json-lines > assemblies-metadata.jsonl
dataformat tsv genome --inputfile assemblies-metadata.jsonl --fields accession,assminfo-submitter

This will produce a TSV file with the assembly accession and submitter.

1. Instead of downloading the entire metadata file, you can pipe the two commands above and extract the information you need.

datasets summary genome accession --inputfile assemblies.txt --as-json-lines |  dataformat tsv genome --fields accession,assminfo-submitter

For example:

cat assemblies.txt
GCF_000002285.5
GCF_005444595.1
GCF_011100685.1

datasets summary genome accession --inputfile assemblies.txt  --as-json-lines |  dataformat tsv genome --fields accession,assminfo-submitter

Assembly Accession      Assembly Submitter
GCF_000002285.5 Dog Genome Sequencing Consortium
GCF_005444595.1 University of Michigan
GCF_011100685.1 Uppsala University

I hope it helps!