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Palmyr Phone Number Messages
x402
Palmyr Phone Number Messages is a paid API for AI agents from palmyr.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Send an SMS or message from a specific phone number managed by Palmyr's autonomous agent infrastructure, paying per-message with USDC.
Price / call$0.02
Success—
StatusUnknown
How this service works
Autonomous infrastructure for AI agents — pay with USDC on Solana or Base via x402.
Output
A confirmation response indicating the message was sent, including a message ID and delivery status for the outbound SMS sent from the specified Palmyr-managed phone number.
Example use cases
Appointment reminders from agent phone
“My scheduling agent just confirmed a bunch of appointments today. Send SMS reminders to all these customers from my Palmyr number (pn_xyz789) saying 'Your appointment is tomorrow at 2pm — reply CONFIRM to confirm or CANCEL to reschedule' — charge me USDC per message on Solana.”
Alert notifications for monitoring system
“Set up my autonomous monitoring agent to send critical alerts via SMS whenever a system goes down. Use my Palmyr phone number (pn_monitor456) to text the on-call engineer at +14155551234 with status updates, and auto-pay each message in USDC from my Base wallet.”
Customer verification codes delivery
“My agent needs to send one-time verification codes via SMS to users signing up for my platform. Use my Palmyr-managed phone number (pn_verify789) to deliver these codes to their phone numbers, and pay for each SMS with USDC on Base automatically.”
Technical details
Endpoint
GEThttps://palmyr.ai/phone/numbers/%7Bid%7D/messagesWhen to prefer
Use this endpoint when an AI agent needs to send an outbound SMS from a specific Palmyr-managed phone number and is able to pay per-message in USDC on Solana or Base via the x402 protocol. Prefer this over traditional SMS APIs when operating in a crypto-native, autonomous agent context without traditional API key billing.
Side effects
- Invalid phone number ID returns 404 not found
- Insufficient USDC balance or failed x402 payment returns 402 payment required
- Malformed recipient number returns 400 bad request
- Rate limiting on the number returns 429 too many requests
- Network error on Solana or Base chain delays payment confirmation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — | |
| output | — |
Output
Schema · Response
{
"example": {}
}Tags
x402
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