What is Ua Parser Js?

UAParser.js - The Essential Web Development Tool for User-Agent Detection. Detect Browsers, OS, Devi ua parser js, javascript, analytics, bot-detection.

How to install Ua Parser Js?

Run: claude skill add --url github.com/openclaw/skills/tree/main/skills/bytesagain/useragent-parser

Useragent Parser

Name: Ua Parser Js
Rating: 5 (3818 reviews)
Author: bytesagain

An AI-oriented toolkit for user-agent string analysis. Configure parsing rules, benchmark performance, compare results, manage prompts, evaluate accuracy, fine-tune models, analyze patterns, track costs, monitor usage, optimize workflows, run tests, and generate reports — all with persistent logging and history.

Why Useragent Parser?

Works entirely offline — your data never leaves your machine
Simple command-line interface, no GUI needed
Persistent timestamped logging for every action
Export to JSON, CSV, or plain text anytime
Built-in search across all logged entries
Automatic history and activity tracking

Commands

Command	Description
`useragent-parser configure <input>`	Configure parsing rules or settings. Without args, shows recent entries
`useragent-parser benchmark <input>`	Benchmark parsing performance. Without args, shows recent entries
`useragent-parser compare <input>`	Compare parsing results across engines. Without args, shows recent entries
`useragent-parser prompt <input>`	Manage AI prompts for user-agent analysis. Without args, shows recent entries
`useragent-parser evaluate <input>`	Evaluate parsing accuracy or model output. Without args, shows recent entries
`useragent-parser fine-tune <input>`	Fine-tune parsing models or rulesets. Without args, shows recent entries
`useragent-parser analyze <input>`	Analyze user-agent string patterns. Without args, shows recent entries
`useragent-parser cost <input>`	Track and log cost of parsing operations. Without args, shows recent entries
`useragent-parser usage <input>`	Monitor usage statistics and patterns. Without args, shows recent entries
`useragent-parser optimize <input>`	Optimize parsing rules for speed or accuracy. Without args, shows recent entries
`useragent-parser test <input>`	Run tests against user-agent strings. Without args, shows recent entries
`useragent-parser report <input>`	Generate or review parsing reports. Without args, shows recent entries
`useragent-parser stats`	Show summary statistics across all command categories
`useragent-parser export <fmt>`	Export all data (formats: json, csv, txt)
`useragent-parser search <term>`	Search across all logged entries
`useragent-parser recent`	Show the 20 most recent activity entries
`useragent-parser status`	Health check — version, data dir, entry count, disk usage
`useragent-parser help`	Show help with all available commands
`useragent-parser version`	Show version (v2.0.0)

Each action command (configure, benchmark, compare, etc.) works in two modes:

With arguments: Logs the input with a timestamp and saves it to the corresponding log file
Without arguments: Displays the 20 most recent entries from that category

Data Storage

All data is stored locally at ~/.local/share/useragent-parser/. Each command category maintains its own .log file with timestamped entries in timestamp|value format. A unified history.log tracks all activity across commands. Use export to back up your data in JSON, CSV, or plain text format at any time.

Requirements

Bash 4.0+ with set -euo pipefail support
Standard Unix utilities: date, wc, du, tail, grep, sed, cat
No external dependencies or API keys required

When to Use

Benchmarking UA parsing engines — Compare performance and accuracy of different user-agent parsing approaches with logged results
Analyzing browser and device patterns — Use analyze and compare to track user-agent string patterns across datasets
Fine-tuning detection models — Log fine-tune and evaluate sessions to track improvements in bot detection and device fingerprinting
Tracking API usage and costs — Use cost and usage commands to monitor parsing operation expenses over time
Generating compliance and analytics reports — Export parsed data in JSON, CSV, or text format for downstream analytics pipelines

Examples

bash

# Analyze a user-agent string
useragent-parser analyze "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"

# Benchmark parsing speed
useragent-parser benchmark "10000 UA strings batch test"

# Compare two parsing engines
useragent-parser compare "uap-core vs woothee"

# Test against known bot signatures
useragent-parser test "Googlebot/2.1 (+http://www.google.com/bot.html)"

# Export all logged data as JSON
useragent-parser export json

# Search for Chrome-related entries
useragent-parser search Chrome

# View summary statistics
useragent-parser stats

Ua Parser Js

安装

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