Blog

Insights on AI agents, phone infrastructure, and building with AgentCall.

Developer ResourcesMarch 28, 20265 min read

How to Use AgentCall MCP Server with Claude Code in VS Code

Step-by-step guide to connecting AgentCall's 19 MCP tools to Claude Code in VS Code. Give Claude phone numbers, SMS, OTP extraction, and voice calls.

Developer ResourcesMarch 28, 20265 min read

How to Use AgentCall MCP Server with OpenAI Codex in VS Code

Connect AgentCall's 19 phone tools to OpenAI Codex CLI via MCP. Provision numbers, send SMS, extract OTP codes, and make AI voice calls from your terminal.

NewsMarch 28, 20266 min read

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

AgentCall is now available on Smithery with 19 MCP tools. Give any AI agent phone numbers, SMS, OTP extraction, and voice calls through the Model Context Protocol.

Developer ResourcesFebruary 25, 20267 min read

How to Give Every AI Agent Its Own Phone Number

Each AI agent needs isolated phone identity — its own number, inbox, and webhooks. Learn how AgentCall's per-agent model works and why shared numbers fail at scale.

EngineeringFebruary 22, 20268 min read

OTP-as-a-Service: Automate Phone Verification for AI Agents

Build a fully automated OTP pipeline for AI agents. Provision a number, trigger verification, and extract the code via webhook — no manual SMS reading.

EngineeringFebruary 19, 20268 min read

Voice AI Infrastructure: Phone Numbers for AI Voice Agents

Voice AI platforms need phone numbers as the transport layer. Learn how AgentCall provides provisioning, call recording, status webhooks, and carrier abstraction for AI voice agents.

Developer ResourcesFebruary 17, 20269 min read

Add Phone Numbers to Your SaaS: A Multi-Tenant Guide

How to add per-tenant phone numbers to your SaaS product using AgentCall's agent-scoped API. CRMs, helpdesks, and marketing tools — give every customer their own number.

Developer ResourcesFebruary 14, 20265 min read

Build a Phone-Enabled MVP in 5 Minutes with AgentCall

Go from zero to a working phone-enabled app in 5 minutes. Free tier, no credit card, and a complete code walkthrough with the AgentCall SDK.

EngineeringFebruary 12, 20267 min read

Call Recording for AI Agents: Compliance, Billing, and Audit Trails

Record AI agent calls for compliance, quality assurance, and audit trails. Pro-only at $0.01/min with webhook delivery of recording URLs.

Developer ResourcesFebruary 20, 20268 min read

Why AI Agents Need Phone Numbers

From OTP verification to customer outreach, phone numbers are the missing primitive for autonomous agents. Here's why.

EngineeringFebruary 15, 20267 min read

Why Twilio and VoIP Don't Work for AI Agents (And What Does)

VoIP numbers get blocked. Twilio wasn't built for agents. We break down the limitations and what to use instead.

EngineeringFebruary 10, 20266 min read

OTP Verification for AI Agents: The Complete Guide

How to programmatically receive and extract OTP codes for automated testing and verification of your own applications.

Developer ResourcesFebruary 5, 202610 min read

5 Best Phone Number APIs for Developers Compared [2026]

We compare AgentCall, Twilio, Telnyx, Vonage, and Plivo across features, pricing, and agent-readiness.

NewsJanuary 28, 20265 min read

AgentCall: Phone Infrastructure for AI Agents

Introducing AgentCall — the phone number API purpose-built for AI agents. Real SIM numbers, SMS, voice, and OTP webhooks.