---
title: "Phone"
category: "phone"
count: 7
---

# Phone

Phone numbers, SMS, voice, OTP behavior, and telecom access for agents.

Offerings: 7

| Company | Status | What you get | number_types | countries | capabilities | provisioning_time | a2p_compliance | otp_policy | Last checked |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [AgentCall](/companies/agentcall) | live | An agent gets a dedicated US or Canadian phone number that can send and receive SMS, make and receive AI voice calls, and auto-extract OTP codes from incoming texts, all through a REST API, SDKs, or an MCP server. | local, toll_free, mobile | US, CA | sms, voice | under 5 seconds | not published | allowed | 2026-07-05 |
| [AgentMessage](/companies/agentmessage) | live | Agents get a US phone number that can receive SMS immediately and send SMS, MMS, or iMessage once 10DLC carrier registration is complete, through a single API with built-in consent and opt-out handling. | local | US | sms, mms | Numbers active for inbound immediately; outbound requires 10DLC carrier registration approval | handled | not published | 2026-07-05 |
| [AgentNumber](/companies/agentsnumber-agentnumber) | live | A real US phone number provisioned instantly via a single API call, with SMS and voice calling for AI agents, no signup or KYC required, paid per use in USDC. | local | US | sms, voice | seconds | not published | not published | 2026-07-05 |
| [AgentPhone](/companies/agentphone) | live | Agents get a provisioned phone number for voice calls and SMS/MMS messaging, with real-time transcription of inbound calls and text-to-speech for agent replies, delivered through a unified webhook. | not published | not published | sms, voice, mms | not published | not published | not published | 2026-07-05 |
| [Inkbox](/companies/inkbox) | live | Phone-enabled agent identities get a real PSTN number for calls with audio streaming and SMS/MMS, available as an optional add-on to an identity. | local | US | sms, voice, mms | not published | not published | not published | 2026-07-05 |
| [Sendblue](/companies/sendblue) | live | A dedicated phone number that an AI agent or LLM can use to send and receive iMessage, with automatic fallback to RCS and SMS, plus MMS media, reactions, read receipts, and typing indicators, all through a webhook-based REST API. FaceTime calling via WebRTC is available with a separate FaceTime line purchase. | local | not published | sms, voice, mms | not published | not published | not published | 2026-07-05 |
| [Spenza](/companies/spenza) | live | Agents get a local or international phone number provisioned via API, with SMS send and receive and real-time voice audio streaming over SIP or WebRTC. | local | US, UK, EU, 40+ countries | sms, voice | instant, via single API call | not published | not published | 2026-07-05 |