To cite package ‘httr’ in publications use:

Wickham H (2026). httr: Tools for Working with URLs and HTTP. R package version 1.4.8.9000, https://github.com/r-lib/httr.

Corresponding BibTeX entry:

  @Manual{,
    title = {httr: Tools for Working with URLs and HTTP},
    author = {Hadley Wickham},
    year = {2026},
    note = {R package version 1.4.8.9000},
    url = {https://github.com/r-lib/httr},
  }