To cite package ‘vaultr’ in publications use:

  FitzJohn R, Ashton R, Hinsley W (2023). _vaultr: Vault Client for
  Secrets and Sensitive Data_. R package version 1.2.0,
  <https://github.com/vimc/vaultr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {vaultr: Vault Client for Secrets and Sensitive Data},
    author = {Rich FitzJohn and Robert Ashton and Wes Hinsley},
    year = {2023},
    note = {R package version 1.2.0},
    url = {https://github.com/vimc/vaultr},
  }