AgentCall is Now on Smithery

Today we're announcing that AgentCall's MCP server is officially live on Smithery, the largest registry for Model Context Protocol servers. Any AI agent that supports MCP can now provision phone numbers, send SMS, extract OTP codes, and make voice calls — all through a single connection.

With 19 tools available out of the box, AgentCall gives AI agents the same phone capabilities that humans take for granted: a real phone number, a text inbox, and the ability to make and receive calls.

What is MCP and Why Does It Matter?

The Model Context Protocol (MCP) is an open standard that lets AI agents connect to external tools and services. Instead of writing custom API integrations for every service, agents can discover and use MCP servers that expose structured tools. Think of it like USB for AI — plug in a server, and the agent immediately knows what it can do.

For phone infrastructure, this is a game changer. An AI agent running on Claude, Cursor, OpenClaw, or any MCP-compatible platform can now:

Provision a real phone number in seconds
Send and receive SMS programmatically
Auto-extract OTP verification codes
Initiate voice calls with transcripts
Run fully autonomous AI-powered phone conversations

No API keys to configure manually, no SDK to install, no boilerplate code. The agent connects to AgentCall through MCP and starts using phone tools immediately.

19 MCP Tools Available Today

The AgentCall MCP server exposes 19 tools organized across five categories. Here's what your agent can do:

Phone Numbers

provision_number — Get a new phone number (local, toll-free, mobile, or SIM)
list_numbers — See all provisioned numbers
get_number — Get details on a specific number
release_number — Release a number when done

SMS

send_sms — Send a text message from any provisioned number
get_sms_inbox — Read inbound messages
get_otp_code — Long-poll for OTP codes with automatic extraction

Voice Calls

initiate_call — Start an outbound voice call
initiate_ai_call — Start an AI-powered autonomous phone conversation
get_call_status — Check call progress
get_call_transcript — Retrieve the full transcript of an AI call
list_calls — List all calls for a number

Webhooks

create_webhook — Register event webhooks (SMS, OTP, call status, recording)
list_webhooks — View active webhooks
delete_webhook — Remove a webhook

Usage and Billing

get_usage — Check usage stats and billing breakdown
get_plan — View current plan details
list_invoices — Access billing history
get_account — Account information

How to Connect

Connecting to AgentCall through Smithery takes about 30 seconds. Here are the three ways to get started:

Via Smithery CLI

smithery mcp add agentcall/agentcall

Via Connection URL

Point your MCP client to: https://agentcall--agentcall.run.tools

Via npm (for local development)

npx @agentcall/mcp-server --api-key YOUR_API_KEY

You'll need an AgentCall API key, which you can get for free at agentcall.co/sign-up. The free plan includes 1 phone number, 10 SMS per month, 5 call minutes, and 5 OTP extractions — enough to build and test your integration.

Real-World Use Cases

Automated QA Testing

AI agents running QA pipelines can provision a phone number, enter it in a signup form, wait for the OTP code, verify the account, and release the number — all without human intervention. The get_otp_code tool long-polls for up to 60 seconds and returns the extracted verification code automatically.

AI Voice Agents

Build agents that can make autonomous phone calls. Provision a number, call a destination with a system prompt, and get back a full transcript. Perfect for appointment scheduling, surveys, lead qualification, and customer outreach.

Agent-to-Human Communication

Give your AI agent a persistent phone number it can use to send SMS updates, receive customer replies, and maintain ongoing conversations. Each agent gets its own isolated number — no cross-contamination between agents or customers.

Why Smithery?

Smithery is where developers and AI agents discover MCP servers. With over 6,000 servers listed and thousands of active users, it's the npm of the MCP ecosystem. Publishing AgentCall on Smithery means any MCP-compatible agent can find and use phone infrastructure without the developer needing to write a single line of integration code.

The AgentCall MCP server is also available as an npm package (@agentcall/mcp-server) for developers who prefer to run it locally or self-host. Both options connect to the same AgentCall API and support the same 19 tools.

Pricing

AgentCall offers two plans:

Free — 1 phone number, 10 SMS/month, 5 call minutes, 5 OTP extractions. No credit card required. Local, toll-free, and mobile number types.
Pro ($29/month) — Unlimited everything. SIM numbers, call recording, and AI voice calls at $0.20/min with 8 voice options.

Get Started

AgentCall's MCP server is live now. Here's everything you need:

If you have questions, reach out at support@agentcall.co — our support agent responds twice daily.

AgentCall MCP Server Now Live on Smithery — 19 Tools for AI Agent Phone Infrastructure