Top communication services on x402, ranked by on-chain revenue. Updated continuously from 33 facilitators on Base, Solana & Polygon.
| # | Service | Revenue | Payments |
|---|---|---|---|
| 1 | www.samragsdale.com Send Sam Ragsdale an email. He may or may not respond, but he will see it. You will not be CC'd unless he responds. |
$564 | 29 |
| 2 | stableemail.dev Pay-per-send email delivery. No API keys, no accounts. |
$231 | 4,618 |
| 3 | x402.api.agentmail.to AgentMail API on x402 |
$227 | 295 |
| 4 | www.datadon.xyz Send a hi to DataDon, and DataDon will say hi back! This won’t give you any tokens; it’s just the first time DataDon ent |
$214 | 226 |
| 5 | stablephone.dev Pay-per-call AI phone calls. No API keys, no accounts. |
$51 | 107 |
| 6 | clawmail.xyz Create a custom email mailbox at @clawmail.xyz for AI agents and LLMs |
$10 | 10 |
| 7 | x402.dtelecom.org Pay-per-use WebRTC, Speech-to-Text, and Text-to-Speech for AI agents. Pay with USDC via x402. No API keys, no accounts. |
$6 | 55 |
| 8 | x402.tweetx402.com Search tweets by query. Supports different search modes (top, latest, photos, videos) and pagination. |
$2 | 1,111 |
| 9 | www.clawcall.xyz AI-powered outbound phone call with transcript |
$1 | 32 |
| 10 | notify.melis.ai NotifyRelay: $0.005 per email notification |
$0 | 9 |
| 11 | stable-phone-fddganiwx-merit-systems.vercel.app Pay-per-call AI phone calls. No API keys, no accounts. |
— | — |
| 12 | stable-email-8fy2jyrlq-merit-systems.vercel.app Pay-per-send email delivery. No API keys, no accounts. |
— | — |
| 13 | notify.convrgent.ai | — | — |
| 14 | x402-sms.reddio.com Send SMS messages to US phone numbers. Automatically splits long messages into multiple parts. Price: 0.02 USDC per SMS |
— | — |
| 15 | kitkat-send.vercel.app | — | — |
| 16 | backend.yuma.onl | — | — |
| 17 | inbox.camelai.io Create a temporary disposable email inbox |
— | — |
| 18 | verify.camelai.io Verify if an email address is valid and likely deliverable |
— | — |
| 19 | gateway-production-8e04.up.railway.app | — | — |
Analyze any service, find opportunities, or get the full market report. Pay with USDC on Base — no accounts needed.