user-agent
Library to build content for User-Agent HTTP header
Decision gist · record as of 2026-08-14
Yes, if you need basic user agent generation for web scraping or testing. The low install friction, permissive MIT license, and broad Python version support make it straightforward to add. However, be aware that maintenance is aging (338 days since last release) and the user agent database may not reflect the latest browser versions—verify that generated agents match your target environment before relying on it for production bot detection evasion.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction with only two lightweight runtime dependencies (six and pytz).
- Maintenance status is aging—last release was 338 days ago—but the repository remains active with recent commits and no archived status.
License · maintenance · safety
permissive license (permissive) — MIT license permits unrestricted use, modification, and distribution with minimal obligations, making it suitable for both open-source and commercial projects.
last release 2025-09-10 (338 days) · last repo commit 2025-09-14 · 347 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 315,880 downloads/mo, #7,683 on PyPI
Alternatives
Verify before relying
pip install user-agent
from user_agent import generate_user_agent, generate_navigator
generate_user_agent()
# 'Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.3; Win64; x64)'
generate_navigator()- Whether the generated user agents remain current with modern browser versions and OS releases
- How frequently the user agent database is updated to reflect real-world browser landscape changes
What it is and what it does
user_agent is a library for generating realistic, randomized user agent strings and navigator object properties. It produces valid HTTP User-Agent header content and JavaScript navigator object data across a range of browsers and operating systems. The package exposes functions like generate_user_agent() and generate_navigator() that return either raw strings or structured dictionaries, and includes a command-line tool (ua) for one-off generation.
The library is commonly used in web scraping, web crawling, and testing scenarios where rotating or spoofing user agents helps avoid detection or simulate diverse client environments. It depends on six and pytz for Python 2/3 compatibility and timezone handling. The package supports Python 2.7 through 3.13, though its aging maintenance status means the underlying user agent database may lag behind the latest browser releases.
Use it for
- Rotate user agents in web scrapers to avoid bot detection and IP blocking
- Generate realistic navigator objects for browser automation and headless testing
- Simulate diverse client environments in load testing and stress testing scenarios
- Populate User-Agent headers in HTTP requests for web crawlers and API clients
- Test web applications' handling of different browsers and operating systems
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need basic user agent generation for web scraping or testing.
The low install friction, permissive MIT license, and broad Python version support make it straightforward to add. However, be aware that maintenance is aging (338 days since last release) and the user agent database may not reflect the latest browser versions—verify that generated agents match your target environment before relying on it for production bot detection evasion.
Install
user-agent on PyPI
Before you install
Low install friction with only two lightweight runtime dependencies (six and pytz). Maintenance status is aging—last release was 338 days ago—but the repository remains active with recent commits and no archived status.
License in practice
MIT license permits unrestricted use, modification, and distribution with minimal obligations, making it suitable for both open-source and commercial projects.
Quickstart
pip install user-agent
from user_agent import generate_user_agent, generate_navigator
generate_user_agent()
# 'Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.3; Win64; x64)'
generate_navigator()Verify before relying
- Whether the generated user agents remain current with modern browser versions and OS releases
- How frequently the user agent database is updated to reflect real-world browser landscape changes
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=2.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagessixpytz |
| Maintenance | Aging 338 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 315,880 / month, #7,683 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 2Programming Language :: Python :: 2.7Programming Language :: Python :: 3Programming Language :: Python :: 3.0Programming Language :: Python :: 3.1Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.2Programming Language :: Python :: 3.3Programming Language :: Python :: 3.4Programming Language :: Python :: 3.5Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Internet :: WWW/HTTPTopic :: Software Development :: Libraries :: Python ModulesTyping :: Typed |
Evidence: user_agent-0.1.14-py2.py3-none-any.whl
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See also fake-headers · latest-user-agents · random-user-agent · fake-useragent · woothee · ua-generator · fake-http-header · ua-parser · browserforge · httpagentparser