Hi all, This new feature looks very exciting for tracking reproducibility - now in theory both the tool wrapper version (explicit in the XML) and any underlying tool version will both be recorded: https://bitbucket.org/galaxy/galaxy-central/changeset/84b20f29dfdf I have updated the NCBI BLAST+ wrappers to use the new feature, please merge/transplant this branch/commit: https://bitbucket.org/peterjc/galaxy-central/src/blast_2011_07_07 https://bitbucket.org/peterjc/galaxy-central/changeset/11f425f4e137 I hope the new tool version string will get its own field in the database soon (and be viewable via the web interface). Note that string may well be multi-line, e.g. $ blastp -version blastp: 2.2.25+ Package: blast 2.2.25, build Apr 6 2011 13:59:28 Unless that is you go for more fragile solutions like these to ensure a single line: $ samtools 2>&1 | grep -i "^Version" Version: 0.1.16 (r963:234) $ bwa 2>&1 | grep -i "^Version" Version: 0.5.9-r16 Thanks, Peter P.S. I would say the name <version_string> is a bit confusing, I'd have picked <version_cmd> or <version_command> instead.