Legit.Show measured send21's Security frame at 100/100. Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy. Served over HTTPS with a valid certificate.

How does Legit.Show measure send21?

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.

Developer Tools

send21

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

send21 is a non-custodial crypto payment service with per-transaction fees from 0.49% to 0.01%.

97/100

7/7 frames

Top 3% of 18,564 measured · #1 of 17 in payment gateway

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/send21-io/2026-10-30. That address never changes; this page moves with every re-measure.

Legit.Show scored send21 97/100 on 2026-10-30, measured across all 7 frames from its public surface. legit.show/s/send21-io/2026-10-30

Is send21 production-ready?

Legit.Show scores send21 97 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on send21 (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Standards. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 99/100
Accessibility — 94/100
Security — 100/100
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 — 86/100
Discoverability — 100/100

What we measured

Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 198 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: structured data, sitemap, OpenGraph image, canonical URL.

Who it's for

AI agents · Businesses · Developers · Shopify stores · Payment processors

Pricing

0.49% to 0.01% per payment based on amount (0.49% for $0-10, down to 0.01% for $100,000+), minimum $0.01, maximum $100 per payment; no subscription, setup fee, or monthly minimum

Sources and updates

Description: Taken from send21.io'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 send21's involvement. If anything here is wrong, tell us and a person will check it.

Visit send21 → · Alternatives to send21 → · How this was measured →