R Observatory: Metrics for curl version 8.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

curl

8.1.0Package record

A Modern and Flexible Web Client for R

500packages dependsuggested by 274

17Mdownloads / year

79.3%test coverage

9/13flavors OK

Overview

About

Maintained by Jeroen OomsCRAN page ↗GitHub ↗Website ↗Issues ↗

Bindings to 'libcurl' https://curl.se/libcurl/ for performing fully configurable HTTP/FTP requests where responses can be processed in memory, on disk, or streaming via the callback or connection interfaces. Some knowledge of 'libcurl' is recommended; for a more-user-friendly web client see the 'httr2' package which builds on this package with http specific tools and logic.

Changes in 8.1.0

Win/MacOS: update to libcurl 8.14.20261014 (mainly CVE backports)
Sanitize sensitive URLs from the call embedded in libcurl error conditions so that it is no longer exposed via traceback()/sys.calls() (#454)

From NEWS in the release

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("curl", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("jeroen/curl")

Development version from jeroen/curl. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-curl

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-curl

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-curl

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

1ERROR3NOTE9OK

Check messages

ERRORwhether package can be installedr-devel-windows-x86_64

Installation failed.
See 'd:/Rcompile/CRANpkg/local/4.7/curl.Rcheck/00install.out' for details.

NOTEcompiled coder-oldrel-macos-arm64, r-oldrel-macos-x86_64, r-oldrel-windows-x86_64

r-oldrel-macos-arm64, r-oldrel-macos-x86_64

File ‘curl/libs/curl.so’:
  Found non-API call to R: ‘R_new_custom_connection’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.

r-oldrel-windows-x86_64

File 'curl/libs/x64/curl.dll':
  Found non-API call to R: 'R_new_custom_connection'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual,
and section 'Moving into C API compliance' for issues with the use of
non-API entry points.

CRAN check page ↗

Slowest check: 5.1 min · r-oldrel-windows-x86_64

Status changes

ERROR9 OK, 3 NOTE, 1 ERROR2026-10-20
NOTE10 OK, 3 NOTE2026-10-17
ERROR9 OK, 3 NOTE, 1 ERROR2026-10-15
NOTE10 OK, 3 NOTE2026-09-25
ERROR9 OK, 3 NOTE, 1 ERROR2026-09-18

Show 13 earlier changesHide 13 earlier changes

NOTE10 OK, 3 NOTE2026-09-12
ERROR9 OK, 3 NOTE, 1 ERROR2026-09-04
NOTE10 OK, 3 NOTE2026-08-30
ERROR8 OK, 3 NOTE, 1 ERROR2026-04-27
NOTE7 OK, 7 NOTE2026-04-24
ERROR6 OK, 7 NOTE, 1 ERROR2026-04-16
NOTE6 OK, 8 NOTE2026-03-31
ERROR5 OK, 8 NOTE, 1 ERROR2026-03-28
NOTE6 OK, 8 NOTE2026-03-25
ERROR6 OK, 7 NOTE, 1 ERROR2026-03-22
NOTE6 OK, 8 NOTE2026-03-16
ERROR5 OK, 8 NOTE, 1 ERROR2026-03-15
NOTE6 OK, 8 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 8.1.0

README· In the repository, left out of the releaseVignettesYes · 2 · dynamicNEWSYes · 100% structured · mentions 8.1.0Citation fileNoWebsiteYes

Help pages: 19
Examples that run: 65%11 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran) · 5 never run
Exported functions with examples: 89%
Documented parameters: 100%
Return-value docs: 21%
Help pages citing references: 0%

Vignettes (2)

How these are measured

Downloads

17M

CRAN downloads in the past year

Rank #23 · ~46.7K/day · ~1.4M/mo

Releases R versions

Daily download trend is not available in this view yet.

1.3M30 days

4.2M90 days

17M1 year

Compare downloads with other packages →

Also on243.1K r2u2.1K autocran1.6M conda_forge21K c2d4u

How downloads are counted

Repository

jeroen/curl ↗Account: jeroen

234Stars

78Forks

8Open issues

6Open PRs

41Releases

1,348Commits

28Commit identities

1,348 commits · Last activity 2026-10-19 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 72%
Median days to close, 50 most recently updated closed issues: 2
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-10-07 · 2302026-09-24 · 234

How these are measured

PracticesBeta

4 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/jeroen/curl on 2026-10-22.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (1)

GitHub Pages site last deployed 2026-04-20

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-04-23
Named in .Rbuildignore: .claude
Pull request it wrote: opened by a project member
Commits: at least 1 crediting it in the message

Models named in its commits

Claude Opus 5.51 commit · Oct 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing curl adds no packages beyond those that come with R.

Depends (1)

R >= 3.0.0

Imports (0)

none

LinkingTo (0)

none

Suggests (8)

spelling testthat knitr jsonlite later rmarkdown httpuv webutils

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

500direct

3,381indirect

Depends 4 · Imports 496

Suggested by 274

Show the 48 most downloaded dependentsHide the 48 most downloaded dependents

Depends, Imports or LinkingTo, most downloaded first

and 452 more dependents and 274 packages that suggest it on CRAN ↗

How these are counted

Code & Tests

People & History

People (3)

Jeroen Ooms

Author, Maintainer since 0.2 (2014)

Hadley Wickham

Contributor · added in 0.6

Posit Software, PBC

Copyright holder · added in 6.0.0

Listed in earlier versions (1)

RStudio

no longer listed · 0.6 to 5.2.3

Releases (59)

Pick two releases to compare their code metrics.

8.1.0Latest
record
2026-10-14 · current release · diff ↗ ·
listed once in CRAN's queue
Seen in one reading of CRAN's incoming queue, at 2026-10-14 10:55 UTC, so it stayed less than the time between readings.
8.0.0
record
2026-08-25 · diff ↗ ·
added 1 export
pattern:^CURL
R
R 4.6.0 released · 2026-04-24
7.1.0
record
2026-04-22 · diff ↗
7.0.0
record
2025-08-20 · diff ↗ ·
added 1 export
curl_options_table
6.4.0
record
2025-06-22 · diff ↗
6.3.0
record
2025-06-06 · diff ↗ ·
added 1 export
curl_modify_url
6.2.3
record
2025-05-24 · diff ↗
R
R 4.5.0 released · 2025-04-11
6.2.2
record
2025-03-24 · diff ↗
6.2.1
record
2025-02-19 · diff ↗
6.2.0
record
2025-01-23 · diff ↗
6.1.0
record
2025-01-06 · diff ↗
6.0.1
record
2024-11-14 · diff ↗
6.0.0
record
2024-11-05 · diff ↗ ·
added 1 export
curl_parse_url
5.2.3
record
2024-09-20 · diff ↗

Show 56 earlier eventsHide 56 earlier events

5.2.2
record
2024-08-26 · diff ↗
R
R 4.4.0 released · 2024-04-24
5.2.1
record
2024-03-02 · diff ↗
5.2.0
record
2023-12-08 · diff ↗ ·
added 1 export
find_port
5.1.0
record
2023-10-02 · diff ↗
5.0.2
record
2023-08-14 · diff ↗
5.0.1
record
2023-06-08 · diff ↗
R
R 4.3.0 released · 2023-04-21
5.0.0
record
2023-01-12 · diff ↗ ·
added 1 export
multi_download
4.3.3
record
2022-10-06 · diff ↗
R
R 4.2.0 released · 2022-04-22
4.3.2
record
2021-06-23 · diff ↗
R
R 4.1.0 released · 2021-05-18
4.3.1
record
2021-04-30 · diff ↗
R
R 4.0.0 released · 2020-04-24
4.3
record
2019-12-02 · diff ↗
4.2
record
2019-09-24 · diff ↗
4.1
record
2019-09-16 · diff ↗
4.0
record
2019-07-22 · diff ↗ ·
added 3 exports
curl_symbols, curl_upload, send_mail
R
R 3.6.0 released · 2019-04-26
3.3
record
2019-01-10 · diff ↗ ·
added 2 exports
curl_fetch_echo, file_writer
R
R 3.5.0 released · 2018-04-23
3.2
record
2018-03-28 · diff ↗
3.1
record
2017-12-12 · diff ↗
3.0
record
2017-10-06 · diff ↗ ·
added 1 export
multi_fdset
2.8.1
record
2017-07-22 · diff ↗
2.7
record
2017-06-26 · diff ↗ ·
added 1 export
parse_headers_list
2.6
record
2017-04-27 · diff ↗
R
R 3.4.0 released · 2017-04-21
2.5
record
2017-04-14 · diff ↗ ·
added 1 export
curl_echo
2.4
record
2017-03-24 · diff ↗ ·
added 1 export
form_data
2.3
record
2016-11-24 · diff ↗
2.2
record
2016-10-21 · diff ↗
2.1
record
2016-09-22 · diff ↗
2.0
record
2016-09-17 · diff ↗ ·
added 8 exports
curl_fetch_multi, handle_data, multi_add, multi_cancel, multi_list, multi_run, multi_set, new_pool
1.2
record
2016-08-13 · diff ↗
1.1
record
2016-07-26 · diff ↗
1.0
record
2016-07-24 · diff ↗
R
R 3.3.0 released · 2016-05-03
0.9.7
record
2016-04-10 · diff ↗
0.9.6
record
2016-02-17 · diff ↗ ·
added 1 export
has_internet
0.9.5
record
2016-01-23 · diff ↗ ·
added 1 export
nslookup
0.9.4
record
2015-11-20 · diff ↗
0.9.3
record
2015-08-25 · diff ↗
0.9.2
record
2015-08-08 · diff ↗ ·
added 1 export
ie_get_proxy_for_url
0.9.1
record
2015-07-04 · diff ↗
0.9
record
2015-06-19 · diff ↗
0.8
record
2015-06-06 · diff ↗
0.7
record
2015-05-22 · diff ↗
0.6
record
2015-05-19 · diff ↗ ·
added 13 exports
curl_fetch_disk, curl_fetch_memory, curl_fetch_stream, form_file, handle_cookies, handle_reset, handle_setform, handle_setheaders, handle_setopt, ie_proxy_info, new_handle, parse_date, parse_headers
R
R 3.2.0 released · 2015-04-16
0.5
record
2015-02-01 · diff ↗
0.4
record
2015-01-08 · diff ↗ ·
added 4 exports
curl_escape, curl_options, curl_unescape, curl_version
0.3
record
2014-12-01 · diff ↗ ·
added 1 export
curl_download
0.2
record
2014-11-20
R
R 3.1.0 released · 2014-04-10

Across CRAN, the median accepted release of the past year spent 26 hours in the queue, 90% under 11 days.How queue time is measured

Package metadata

First published: 2014-11-20
Total releases: 59 / 12 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.0.0
Download size: 714 KB

Appears in task views

Web Technologies and Services

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("curl")

Format

Ooms, J., Posit Software, PBC, & Wickham, H. (2026). curl: A Modern and Flexible Web Client for R (Version 8.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.curl

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for curl version 8.1.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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