cURL

aid: curl
name: cURL
description: cURL is a command-line tool and library for transferring data with URLs. Originally released in 1997 by Daniel
  Stenberg, cURL is the de facto standard tool used by developers for testing, automating, and scripting interactions with
  HTTP, HTTPS, FTP, and many other URL-based protocols. It ships in two primary forms - the curl command-line binary used
  directly in shells and scripts, and libcurl, a portable C library that powers data transfer features inside thousands of
  applications, operating systems, devices, and programming languages.
url: https://raw.githubusercontent.com/api-evangelist/curl/refs/heads/main/apis.yml
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- API Client
- Command Line
- Data Transfer
- FTP
- HTTP
- HTTPS
- Library
- Network Tools
- Open Source
- REST
created: '2024-01-01'
modified: '2026-04-28'
specificationVersion: '0.20'
apis:
- aid: curl:curl-cli
  name: cURL Command Line Tool
  description: The curl command-line tool transfers data to or from a server using URL syntax, supporting protocols including
    DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMTP,
    SMTPS, TELNET, TFTP, WS and WSS. It is widely used for API testing, automation, scripting, file uploads and downloads,
    debugging HTTP exchanges, and as a general-purpose network client.
  image: https://curl.se/logo/curl-logo.svg
  humanURL: https://curl.se/
  tags:
  - API Client
  - API Testing
  - Command Line
  - Data Transfer
  - FTP
  - HTTP
  - HTTPS
  - REST
  properties:
  - type: Documentation
    url: https://curl.se/docs/
  - type: Manual
    url: https://curl.se/docs/manual.html
  - type: Tutorial
    url: https://curl.se/docs/tutorial.html
  - type: Man Page
    url: https://curl.se/docs/manpage.html
  - type: How To
    url: https://curl.se/docs/howto.html
  - type: FAQ
    url: https://curl.se/docs/faq.html
  - type: GitHub
    url: https://github.com/curl/curl
  - type: Download
    url: https://curl.se/download.html
  - type: ChangeLog
    url: https://curl.se/changes.html
- aid: curl:libcurl
  name: libcurl
  description: libcurl is a free, easy-to-use, thread-safe, IPv6-compatible client-side URL transfer library written in C
    with a stable API and ABI. It supports the same broad set of protocols as the curl command-line tool and is embedded in
    operating systems, applications, and developer tools across nearly every platform. Bindings are available for dozens of
    languages including PHP, Python, Ruby, Rust, Go, Java, .NET, and many others.
  image: https://curl.se/logo/curl-logo.svg
  humanURL: https://curl.se/libcurl/
  tags:
  - C
  - HTTP Client
  - Library
  - SDK
  - URL Transfer
  properties:
  - type: Documentation
    url: https://curl.se/libcurl/
  - type: APIReference
    url: https://curl.se/libcurl/c/
  - type: Examples
    url: https://curl.se/libcurl/c/example.html
  - type: SDKs
    url: https://curl.se/libcurl/bindings.html
  - type: GitHub
    url: https://github.com/curl/curl
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/the-curl-project
- type: Website
  url: https://curl.se/
- type: Support
  url: https://curl.se/support.html
- type: Mailing Lists
  url: https://curl.se/mail/
- type: Security
  url: https://curl.se/dev/security.html
- type: Blog
  url: https://daniel.haxx.se/blog/
- type: Books
  url: https://everything.curl.dev/
- type: License
  url: https://curl.se/docs/copyright.html