Skip to content


MIT 1 9 978
703.8 thousand (month) May 06 2012 1.4.7(9 months ago)
1,610 4 83 MIT
3.3.1(2 months ago) Dec 11 2011 30.5 million (month)

The aim of httr is to provide a wrapper for the curl package, customised to the demands of modern web APIs.

Key features:

  • Functions for the most important http verbs: GET(), HEAD(), PATCH(), PUT(), DELETE() and POST().
  • Automatic connection sharing across requests to the same website (by default, curl handles are managed automatically), cookies are maintained across requests, and a up-to-date root-level SSL certificate store is used.
  • Requests return a standard reponse object that captures the http status line, headers and body, along with other useful information.
  • Response content is available with content() as a raw vector (as = "raw"), a character vector (as = "text"), or parsed into an R object (as = "parsed"), currently for html, xml, json, png and jpeg.
  • You can convert http errors into R errors with stop_for_status().
  • Config functions make it easier to modify the request in common ways: set_cookies(), add_headers(), authenticate(), use_proxy(), verbose(), timeout(), content_type(), accept(), progress().
  • Support for OAuth 1.0 and 2.0 with oauth1.0_token() and oauth2.0_token(). The demo directory has eight OAuth demos: four for 1.0 (twitter, vimeo, withings and yahoo) and four for 2.0 (facebook, github, google, linkedin). OAuth credentials are automatically cached within a project.

needle is an HTTP client library for Node.js that provides a simple, flexible, and powerful API for making HTTP requests. It supports all major HTTP methods and has a clean and easy-to-use interface for handling responses and errors.

Example Use


# GET requests:
resp <- GET("")
status_code(resp)  # status code
headers(resp)  # headers
str(content(resp))  # body

# POST requests: 
# Form encoded
resp <- POST(url, body = body, encode = "form")
# Multipart encoded
resp <- POST(url, body = body, encode = "multipart")
# JSON encoded
resp <- POST(url, body = body, encode = "json")

# setting cookies:
resp <- GET("", set_cookies("MeWant" = "cookies"))
content(r)$cookies  # get response cookies
const needle = require('needle');

// needle supports both Promises and async/await
needle.get('', (err, res) => {
    if (err) {

const response = await needle.get('')

// concurrent requests can be sent using Promise.all
const results = await Promise.all([

// POST requests
const data = { name: 'John Doe' };
await'', data)

// proxy
const options = {
    proxy: ''
await needle.get('', options)

// headers and cookies
const options = {
  headers: {
      'Cookie': 'myCookie=123',
      'X-My-Header': 'myValue'
await needle.get('', options)

Alternatives / Similar