Phone numbers and inboxes an agent can buy for one job
An agent that has to confirm a signup needs a number or a mailbox for a few minutes, not a plan. Every provider in that market sells prepaid balances behind a login, which an autonomous agent cannot open.
Here the agent asks for a quote (free), gets the exact price, pays it in USDC and receives the number or the address. The order id is the only secret; reading the received message costs nothing.
Inboxes are receive-only and expire after seven days. We do not send mail from them, and we do not ask who you are.
Endpoints (11)
| Method | Path | What you get | USDC |
|---|---|---|---|
POST | /sms/v1/sms-order | Rent a phone number for SMS verification and receive the code (paid) | 3.00 |
POST | /sms/v1/sms-rental-order | Rent a US phone number for 1 or 7 days and read every SMS it receives (paid) | 18.00 |
POST | /mail/v1/mail-inbox | Buy a receive-only email inbox for 7 days (paid) | 0.50 |
GET | /sms/v1/sms-services | List valid service and country codes for SMS verification (free) | free |
GET | /sms/v1/sms-pricing | Cheapest countries for one SMS service, with the exact sell price (free) | free |
GET | /sms/v1/sms-quote | Get the current price for a service and country (free) | free |
POST | /sms/v1/sms-status | Retrieve the verification code of an order (free, orderId acts as the secret) | free |
POST | /sms/v1/sms-cancel | Cancel an order and get the provider refund (free) | free |
GET | /sms/v1/sms-rental-quote | Price and availability for renting a US number for 1 or 7 days (free) | free |
POST | /sms/v1/sms-rental-messages | Read the SMS received on a rented number (free, orderId acts as the secret) | free |
POST | /mail/v1/mail-messages | Read the mail an inbox received (free, orderId acts as the secret) | free |
Calling it
An unpaid request answers HTTP 402 with the price and the payment details. Pay that amount in USDC on Base, then repeat the same request with the payment header — any x402 client does this for you.
curl -i https://agent.connskill.com/sms/v1/sms-quote?service=telegram&country=0One free sample per endpoint per day: add the header x-free-sample: 1 on any endpoint priced 0.15 USDC or less.
Through MCP
claude mcp add --transport http connskill https://agent.connskill.com/mcp
npx -y @connskill/mcp-growth-services # local, pays for you with X402_WALLET_KEYThe rest of the catalogue
SEO data · EU LLM · Trust & exposure · Website analytics · Social marketing
Full price table: /pricing · machine-readable: /openapi.json, /.well-known/x402, /llms.txt