vcr: Record 'HTTP' Calls to Disk

Record test suite 'HTTP' requests and replays them during future runs. A port of the Ruby gem of the same name (<>). Works by hooking into the 'webmockr' R package for matching 'HTTP' requests by various rules ('HTTP' method, 'URL', query parameters, headers, body, etc.), and then caching real 'HTTP' responses on disk in 'cassettes'. Subsequent 'HTTP' requests matching any previous requests in the same 'cassette' use a cached 'HTTP' response.

Version: 1.2.2
Imports: crul (≥ 0.8.4), httr, webmockr (≥ 0.8.0), urltools, yaml, R6, base64enc, rprojroot
Suggests: roxygen2 (≥ 7.2.1), jsonlite, testthat, knitr, rmarkdown, desc, crayon, cli, curl, withr
Published: 2023-06-25
DOI: 10.32614/CRAN.package.vcr
Author: Scott Chamberlain ORCID iD [aut, cre], Aaron Wolen ORCID iD [aut], Maëlle Salmon ORCID iD [aut], Daniel Possenriede ORCID iD [aut], rOpenSci [fnd] (
Maintainer: Scott Chamberlain <sckott at>
License: MIT + file LICENSE
URL: (devel) (user manual)
NeedsCompilation: no
Language: en-US
Materials: NEWS
In views: WebTechnologies
CRAN checks: vcr results


Reference manual: vcr.pdf
Vignettes: 5. cassette manual editing
2. vcr configuration
4. vcr tests debugging
Design of vcr
Turning vcr on and off
vcr record modes
3. request matching
1. vcr introduction
Writing to disk


Package source: vcr_1.2.2.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): vcr_1.2.2.tgz, r-oldrel (arm64): vcr_1.2.2.tgz, r-release (x86_64): vcr_1.2.2.tgz, r-oldrel (x86_64): vcr_1.2.2.tgz
Old sources: vcr archive

Reverse dependencies:

Reverse suggests: air, archiveRetriever, bold, chirps, circle, citecorp, dbhydroR, deepdep, EDIutils, finbif, gfonts, gie, GNRS, hlidacr, intensegRid, ipumsr, magmaR, nasapower, natserv, osfr, pangaear, PowerSDI, PSAWR, qualtRics, rATTAINS, rb3, rcites, rcrossref, rdatacite, rdryad, rgbif, riem, ritis, rnpn, robotoolbox, rorcid, rredlist, rtoot, RTTWebClient, Rtumblr, rtweet, rvertnet, Rwtss, spocc, taxize, TNRS, trackdown, tradestatistics, tremendousr, votesmart, webchem, webmockr, wikitaxa, worrms


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