Legit.Show measured OpenSEO's Security frame at 65/100. Security headers present: HSTS, X-Content-Type-Options, Referrer-Policy. Served over HTTPS with a valid certificate.

How does Legit.Show measure OpenSEO?

Legit.Show scores seven frames — Performance, Accessibility, Security, Privacy, Reliability, Standards and Discoverability — deterministically from the public surface (URL, HTTP headers, real Lighthouse), with no LLM in the scoring path. See legit.show/methodology.

AI & Agents

OpenSEO

Last updated 2026-10-30 · benchmark measured 2026-10-30 — deterministic & reproducible

OpenSEO is an open-source SEO platform with a self-hosted option and pay-per-lookup data.

93/100

7/7 frames

Top 12% of 18,490 measured · #9 of 50 in seo platform

Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.

Checked 2026-10-30 · scores move as sites change

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To cite this score: legit.show/s/openseo-gg/2026-10-30. That address never changes; this page moves with every re-measure.

Legit.Show scored OpenSEO 93/100 on 2026-10-30, measured across all 7 frames from its public surface. legit.show/s/openseo-gg/2026-10-30

Is OpenSEO production-ready?

Legit.Show scores OpenSEO 93 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on OpenSEO (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 94/100
Accessibility — 100/100
Security — 65/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 100/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 92/100
Discoverability — 100/100

What we measured

Security headers present: HSTS, X-Content-Type-Options, Referrer-Policy.
No Content-Security-Policy.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 982 ms to first byte.
Returns a proper 404 for unknown routes.
3 of 3 sampled routes reachable.
Has a reachable privacy policy.
Sets cookies / loads scripts with no consent prompt.

Who it's for

SEO professionals · AI agent developers · Independent marketers · Self-hosted users · Budget-conscious teams

Pricing

Free self-hosted version; hosted version uses pay-per-lookup model starting with $5 free credit from YepAPI ($0.01–$1.75 per action)

Sources and updates

Description: Taken from openseo.gg's own website on 2026-10-30.
Benchmark: Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-10-30.

Put together from public information, without OpenSEO's involvement. If anything here is wrong, tell us and a person will check it.

Visit OpenSEO → · Alternatives to OpenSEO → · How this was measured →