send21 vs OceanAlt
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
| Detail | 
send21 | 
OceanAlt |
|---|---|---|
| What it does | Non-custodial crypto payment links and API for people and AI agents | Free address-screening API for pre-payment risk decisions on agentic payments |
| Stage | Not given | Not given |
| Founded | Not given | Not given |
| Based in | Not given | HK |
| Pricing model | Paid | Not given |
| Pricing | One fee per payment: 0.49% on $0-$10, 0.39% on $10-$50, 0.29% on $50-$100, 0.19% on $100-$500, 0.14% on $500-$2,000, 0.09% on $2,000-$10,000, 0.04% on $10,000-$50,000, 0.02% on $50,000-$100,000, 0.01% above $100,000. Minimum $0.01, maximum $100. No subscription, setup fee or monthly minimum. | Free: 2,000 calls/month at 60/min (no signup) or 5,000/month at 180/min with email; registered agent credential 50,000/month at 300/min. Team plan $49/month or $490/year (founding price). Pay-per-call: $0.002 per decision, $0.10 for 100 calls (x402), $0.01 per deep trace or batch. |
| Key features |
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| What makes it different | Not given |
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| Free plan | Not given | Not given |
| Open source | Not given | Not given |
| Platforms | Not given | Not given |
| Public API | Not given | Not given |
| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 10 +4 (up) since last check | 3 no change since last check |
| Trust Flow (Majestic) | 15 | 3 |
| Citation Flow (Majestic) | 28 | 28 |
| Referring domains (Majestic) | 35 | 43 |
3 details filled in for both companies.