Developer Tools
universal-user-agent
Last updated 2026-06-16 · benchmark measured 2026-07-31 — deterministic & reproducible
Get a user agent string across all JavaScript Runtime Environments
Is universal-user-agent production-ready?
Legit.Show scores universal-user-agent 67 out of 100 — the simple average of its 3 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on universal-user-agent (github assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Discoverability. 3 of the seven frames returned a score; Performance, Accessibility, Privacy and Reliability were not measurable on this service and are recorded as null — not as zero. Maintenance is an additional frame from the open-source teardown, scored separately from the seven. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — not measurable on this service (null — not scored as 0)
- Accessibility — not measurable on this service (null — not scored as 0)
- Security — 90/100
- Privacy — not measurable on this service (null — not scored as 0)
- Reliability — not measurable on this service (null — not scored as 0)
- Standards — 75/100
- Discoverability — 35/100
Open-source teardown
Scored separately — not one of the seven.
- Maintenance — 55/100
What we measured
- No Content-Security-Policy and no HSTS.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
Who built it
Gregor Martynus