A Toolkit for Connecting R and Large Language Models R package btw version 1.3.0 A complete toolkit for connecting 'R' environments with Large Language Models (LLMs). Provides utilities for describing 'R' objects, package documentation, and workspace state in plain text formats optimized for LLM consumption. Supports multiple workflows: interactive copy-paste to external chat interfaces, programmatic tool registration with 'ellmer' chat clients, batteries-included chat applications via 'shinychat', and exposure to external coding agents through the Model Context Protocol. Project configuration files enable stable, repeatable conversations with project-specific context and preferred LLM settings. Software Depends: R (>= 4.2.0) Imports: brio, cli, clipr, dplyr, ellmer (>= 0.3.0), frontmatter, fs, jsonlite, lifecycle, mcptools, pkgsearch, rlang (>= 1.1.0), rmarkdown, rstudioapi, S7, sessioninfo, skimr, utils, withr, xml2 Suggests: bslib (>= 0.11.0), callr, chromote, covr, DBI, devtools, diffviewer, duckdb, evaluate, fansi, gert, gh, htmltools, pandoc, pkgload, processx, ragg, Rapp (>= 0.3.0), renv, roxygen2, shiny, shinychat (>= 0.4.0), testthat (>= 3.0.0), tibble, usethis Garrick Aden-Buie <garrick@adenbuie.com> Comprehensive R Archive Network (CRAN) Garrick Aden-Buie [aut, cre] (ORCID: <https://orcid.org/0000-0002-7111-0077>), Simon Couch [aut] (ORCID: <https://orcid.org/0000-0001-5676-5107>), Joe Cheng [aut], Posit Software, PBC [cph, fnd], Google [cph] (Material Design Icons), Microsoft [cph] (@vscode/codicons), Jamie Perkins [cph] (countUp.js author) MIT + file LICENSE (https://CRAN.R-project.org/package=btw/LICENSE) 2026-07-02 application/tgz https://CRAN.R-project.org/package=btw doi:10.32614/CRAN.package.btw