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User-Agent String Parser
x402
User-Agent String Parser is a paid API for AI agents from dev-utils.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-02).
Parses a User-Agent string to extract browser, OS, device class (desktop/mobile/tablet/tv/bot), and bot detection flag.
Price / call$0.02
Success—
StatusUnknown
How this service works
Parse a User-Agent string: browser, OS, device class (desktop, mobile, tablet, tv, bot) and a bot flag.
Output
Returns a structured object containing: browser name/engine/version, OS name/version, device class (desktop/mobile/tablet/tv/bot), a boolean bot flag, bot name and kind if applicable, a human-readable summary and verdict, degraded-parse flag, a list of unchecked signals, disclaimer, source, and timestamp of the parse result.
Example use cases
Bot traffic filtering in access logs
“I have this user-agent from a suspicious request hitting my API: 'Googlebot/2.1 (+http://www.google.com/bot.html)' — can you parse it and tell me if it's a bot, what kind, and what device class it is?”
Mobile vs desktop analytics segmentation
“Parse this user-agent string 'Mozilla/5.0 (Linux; Android 13; Pixel 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Mobile Safari/537.36' and tell me whether it's a mobile or desktop device and which browser it's using.”
Browser compatibility check for support ticket
“A user submitted this user-agent with their support ticket: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0' — what browser, version, and OS are they on?”
Technical details
Endpoint
GEThttps://dev-utils.x402tookit.com/user-agent-parse?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, structured breakdown of a raw User-Agent string — especially when you need bot detection, device class classification, or browser/OS fingerprinting in a single call. Prefer it over regex-based parsing when you want a maintained, up-to-date parser that handles edge cases and flags degraded results. At $0.02 per call it's cost-effective for on-demand lookups in support workflows, access log analysis, or API middleware.
Side effects
- Missing 'ua' query parameter returns an error
- User-agent string exceeding 600 characters may be truncated or rejected
- Uncommon or novel user-agent strings may return degraded results with the 'degraded' flag set to true
- Unknown or ambiguous user-agents may return null fields for browser/OS/deviceClass
- Payment failure returns HTTP 402 before parsing occurs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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