To cite package ‘chains’ in publications use:

  Harmon J (2026). _chains: Complex Reactive Values for 'shiny'_. R
  package version 0.0.0.9017, <https://github.com/shinyworks/chains>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {chains: Complex Reactive Values for 'shiny'},
    author = {Jon Harmon},
    year = {2026},
    note = {R package version 0.0.0.9017},
    url = {https://github.com/shinyworks/chains},
  }