# Palmyr Communications – Read SMS Messages

> Palmyr Communications – Read SMS 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).

Retrieves all SMS messages received on a phone number you own or have shared access to.

## Facts

- Endpoint: GET https://palmyr.ai/phone/numbers/:id/messages
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/palmyr-communications-read-sms-messages-2efafdf6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kLxCCiMATDZx2mAOvvXT2

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability palmyr-communications-read-sms-messages-2efafdf6
```

Example prompt: Show me all the SMS messages that have come in on my Palmyr phone number — the number ID is pn_abc123.

## When to prefer this

Use this endpoint when you need to list or review all SMS messages received on a specific phone number you own or have shared access to via Palmyr, especially for audit, archival, or manual review. For waiting on a specific OTP or verification code, prefer the blocking OTP-wait sibling endpoint instead.

## Known failure modes

- Phone number ID not found or does not exist (404)
- Caller's payment wallet does not match the owning or authorized wallet for this number (403)
- Phone number ID is malformed or missing (400)
- Payment of $0.02 USDC not processed or insufficient funds (402)
- No messages available yet on the number (empty list returned)

## How this service works

Read all SMS messages received on a phone number you own or have shared access to.

## Output

A list of SMS messages received on the specified phone number, including message content, sender, and timestamp details for each message.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "properties": {
    "queryParams": {
     "type": "object",
     "additionalProperties": true
    }
   }
  },
  "output": {
   "properties": {
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/palmyr-communications-read-sms-messages-2efafdf6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from palmyr.ai](https://www.zero.xyz/host/palmyr.ai/llms.txt)