FAIR Theory Construction R package theorytools version 0.1.3 An integrated suite of tools for creating, maintaining, and reusing FAIR (Findable, Accessible, Interoperable, Reusable) theories. Designed to support transparent and collaborative theory development, the package enables users to formalize theories, track changes with version control, assess pre-empirical coherence, and derive testable hypotheses. Aligning with open science principles and workflows, 'theorytools' facilitates the systematic improvement of theoretical frameworks and enhances their discoverability and usability. Software Depends: R (>= 3.5) Imports: worcs (>= 0.1.19), gert, gh, cli, jsonlite, curl, knitr, dagitty, yaml, tidySEM (>= 0.2.9), methods, Deriv, stringdist Suggests: rmarkdown, testthat (>= 3.0.0), pkgdown, webexercises, withr, usethis, fs, ggplot2, igraph, bookdown, reticulate Caspar J. Van Lissa <c.j.vanlissa@tilburguniversity.edu> Comprehensive R Archive Network (CRAN) Caspar J. Van Lissa [aut, cre] (ORCID: <https://orcid.org/0000-0002-0808-5024>) GPL (>= 3) 2026-02-07 application/tgz https://CRAN.R-project.org/package=theorytools doi:10.32614/CRAN.package.theorytools