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Provision real-SIM US phone numbers, receive SMS, and extract OTP codes for AI agents.
Provision real-SIM US phone numbers, receive SMS, and extract OTP codes for AI agents.
Valid MCP server (2 strong, 5 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
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Set these up before or after installing:
Environment variable: JOLTSMS_API_KEY
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-rchanllc-joltsms-sms": {
"env": {
"JOLTSMS_API_KEY": "your-joltsms-api-key-here"
},
"args": [
"-y",
"@joltsms/mcp-server"
],
"command": "npx"
}
}
}From the project's GitHub README.
MCP server for JoltSMS — provision dedicated real-SIM US phone numbers and receive SMS/OTP codes through AI agents.
Built on the Model Context Protocol, this server gives AI agents (Claude Code, Claude Desktop, Cursor, etc.) the ability to rent phone numbers, wait for incoming SMS, extract OTP codes, and manage billing — all through standardized tool calls.
Create a JoltSMS account and generate an API key at Dashboard → Settings → API Keys.
Add to your .mcp.json (Claude Code) or MCP settings (Claude Desktop, Cursor):
{
"mcpServers": {
"joltsms": {
"command": "npx",
"args": ["-y", "@joltsms/mcp-server"],
"env": {
"JOLTSMS_API_KEY": "jolt_sk_your_key_here"
}
}
}
}
Your AI agent now has access to all JoltSMS tools. Try:
"Provision a new phone number with area code 650 and wait for an OTP"
| Tool | Description |
|---|---|
joltsms_list_numbers | List active numbers with service labels, tags, and unread counts |
joltsms_get_number | Full details for a single number |
joltsms_update_number | Set service label, tags, or notes on a number |
joltsms_provision_number | Rent a new dedicated real-SIM US number ($50/mo) |
joltsms_release_number | Cancel/release a number at end of billing period |
joltsms_list_messages | List recent SMS with parsed OTP codes |
joltsms_mark_read | Mark single or bulk messages as read |
joltsms_wait_for_sms | Poll until an SMS arrives (key tool for OTP flows) |
joltsms_get_latest_otp | Get the most recent parsed verification code |
joltsms_billing_status | Check all subscriptions with billing health |
The most common use case — automated phone verification:
1. joltsms_provision_number({ area_code: "650" })
→ Number provisioning started! Phone: +16505551234
2. joltsms_update_number({ number_id: "+16505551234", service_name: "PayPal" })
→ Tagged for easy lookup later
3. [Agent enters phone number on PayPal and requests OTP]
4. joltsms_wait_for_sms({ number_id: "+16505551234", timeout_seconds: 120 })
→ SMS received after 8.2s: "Your PayPal code is 847291"
→ OTP Code: 847291
5. joltsms_mark_read({ number_id: "+16505551234" })
→ Inbox clean
6. [Agent enters 847291 on PayPal — verification complete]
| Variable | Required | Description |
|---|---|---|
JOLTSMS_API_KEY | Yes | Your API key (jolt_sk_*) |
JOLTSMS_API_URL | No | API base URL (defaults to https://api.joltsms.com) |
MIT
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