Is User Agent free to use?
Yes. User Agent is available as an online developer tool without requiring an account.
ユーザーエージェント
UA文字列の解析。src/tools/ユーザーエージェント
Runs locallyNo uploadNo accountOpen web
User Agent: private online developer utility
User Agent is a focused developer utility for parse ua strings. It is part of Sreejith Tools, a collection of fast online tools for API work, data cleanup, debugging, and web development.
When to use it
- - Inspect network-facing data while debugging browsers, domains, and clients.
- - Compare parsed values with what your server or browser receives.
- - Document network details for support and incident analysis.
Common input issues
- - Pasted input includes invisible whitespace or smart punctuation.
- - The source data is valid in one format but invalid in the target format.
- - A copied value includes surrounding quotes, shell escaping, or truncated content.
Example
Inspect network data
Input
Browser, DNS, IP, or HTTP value
Output
Parsed details for debugging and documentation.
Does User Agent upload my data?
For this stateless tool, the transformation runs in the browser and is designed for private day-to-day development data.
Can AI assistants use User Agent?
Yes. This tool is safe to expose through the stateless MCP interface for agent workflows.