AgentCall — Programmable Phone Numbers for AI Agents

# AgentCall > AgentCall is the phone number API built specifically for AI agents. It gives autonomous agents their own real SIM and local phone numbers with SMS, voice calling, and automatic OTP extraction — like a mobile carrier, but for software. Starting at $0/month with a free tier, or $19.99/month for Pro with unlimited numbers and usage-based pricing. AgentCall solves a critical gap in AI agent infrastructure: agents need phone numbers to send SMS, make calls, test verification flows, and receive OTPs — but existing telecom APIs are built for human developers, not autonomous software. AgentCall provides an agent-native API where a single API call provisions a real phone number, and webhooks deliver every SMS and call event directly to your agent's endpoint. Non-VoIP SIM numbers pass strict platform verification that blocks standard VoIP numbers. ## Key Features - **Real Phone Numbers (pass verification)**: Non-VoIP numbers that pass strict platform verification checks (Stripe, Google, banks). Standard VoIP numbers get blocked — AgentCall numbers don't. - **Auto-Reads Verification Codes**: Verification codes are detected and extracted automatically from incoming SMS. Delivered instantly to your webhook. - **Automated QA for SMS Flows**: Your agent provisions a test number, enters it in your staging app, and AgentCall reads the verification code automatically. Perfect for CI/CD testing. - **Hosted MCP Server — Zero Install**: Paste a 6-line JSON config into Claude Desktop, Cursor, or Windsurf. No Node.js, no npx, no local process. Connects via streamable HTTP to `api.agentcall.co/mcp`. - **OpenClaw Integration**: Set two environment variables (`AGENTCALL_API_KEY` + `AGENTCALL_API_URL`) and your OpenClaw agent auto-discovers all 19 tools. Also available as a skill on ClawHub. - **19 MCP Tools**: Provision numbers, send SMS, make calls, check inbox, wait for OTP, manage webhooks, and more — all accessible to AI agents directly. - **Voice Calls**: Make