To cite package ‘openmetrics’ in publications use:

Jacobs A (2021). openmetrics: A 'Prometheus' Client for R Using the 'OpenMetrics' Format. R package version 0.3.0.9000, https://github.com/atheriel/openmetrics.

Corresponding BibTeX entry:

  @Manual{,
    title = {openmetrics: A 'Prometheus' Client for R Using the
      'OpenMetrics' Format},
    author = {Aaron Jacobs},
    year = {2021},
    note = {R package version 0.3.0.9000},
    url = {https://github.com/atheriel/openmetrics},
  }