Legit.Show measured OpenSEO's Security frame at 25/100. No Content-Security-Policy and no HSTS. 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

Source: every-app/open-seo · ★ 2891 · TypeScript

Last updated 2026-06-26 · benchmark measured 2026-09-22 — deterministic & reproducible

Open-source SEO platform covering keywords, backlinks, audits, and AI visibility.

79/100

7/7 frames

Top 47% of 14,148 measured · #23 of 36 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 2026-09-22 · scores move as sites change

Are you the maker of OpenSEO? Claim this listing. It is free, takes a meta tag, a DNS record or GitHub admin rights, and never changes the score.

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To cite this score: legit.show/s/gh-every-app-open-seo/2026-09-22. That address never changes; this page moves with every re-measure.

Legit.Show scored OpenSEO 79/100 on 2026-09-22, measured across all 7 frames from its public surface. legit.show/s/gh-every-app-open-seo/2026-09-22

Is OpenSEO production-ready?

Legit.Show scores OpenSEO 79 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 Reliability; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 76/100
Accessibility — 95/100
Security — 25/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 70/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 100/100
Discoverability — 85/100

What we measured

No Content-Security-Policy and no HSTS.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 95 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.
Discoverable: sitemap, OpenGraph image, canonical URL.

Who built it

Ben Senescu (@bensenescu)

Who it's for

SEO professionals · Content strategists · Competitors analysts · AI agent developers · Self-hosted tool builders

Pricing

Managed Base Plan $20/month includes keyword research, backlinks, rank tracking, site audits, MCP server, and $20 usage credits; self-hosted free via GitHub with your own API keys.

Sources and updates

Description: Taken from openseo.so's own website on 2026-06-26.
Operator: Every App, Inc., as named in openseo.so's terms, privacy page or footer.
Code: github.com/every-app/open-seo.
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 2026-09-22.

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 →