Verifiable FDR Diagnostics for Proteomics R package diagFDR version 0.1.0 Provides methods to compute verifiable false discovery rate (FDR) diagnostic checks for workflows based on target-decoy competition and related confidence measures. Implements calibration, stability and tail diagnostics, including tail support, threshold elasticity, posterior error probability (PEP) reliability, and equal-chance checks. Software Depends: R (>= 4.2.0) Imports: dplyr, tibble, ggplot2, purrr, rlang, readr, xml2, cp4p, tidyr, scales, data.table Suggests: arrow, knitr, officer, rvg, testthat (>= 3.0.0), withr, rmarkdown, jsonlite Quentin Giai Gianetto <quentin.giaigianetto@pasteur.fr> Comprehensive R Archive Network (CRAN) Quentin Giai Gianetto [aut, cre] GPL-3 2026-04-13 application/tgz https://CRAN.R-project.org/package=diagFDR doi:10.32614/CRAN.package.diagFDR