Developer Tools

T3rnel Browser

Last updated 2026-09-09 · benchmark measured 2026-09-09 — deterministic & reproducible

T3rnel Browser is a browser extension combining DevTools with MCP-based AI agent control.

Is T3rnel Browser production-ready?

Legit.Show scores T3rnel Browser 53 out of 100 — the simple average of its 5 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on T3rnel Browser (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. 5 of the seven frames returned a score; Performance and Accessibility were not measurable on this service and are recorded as null — not as zero. 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 — 45/100
• Privacy — 25/100
• Reliability — 100/100
• Standards — 45/100
• Discoverability — 50/100

What we measured

• Security headers present: HSTS.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 109 ms to first byte.
• Returns a proper 404 for unknown routes.
• 1 of 1 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who it's for

Developers · QA engineers · AI agent builders · Browser automation users · Security-conscious teams

Pricing

Free tier; Pro $29.99 one-time purchase (3 activations, no subscription)

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