Voice

AgentPhone

One API giving AI agents phone numbers, calls, and messaging

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Free planUnknown
Free trialYes
APIYes
Open sourceNo
DeploymentCloud
Last verifiedJuly 30, 2026
Overview

Tool overview

AgentPhone is listed under Voice AI tools.

Summary

What is AgentPhone?

AgentPhone is telephony infrastructure designed for AI agents. It provides a single API for provisioning agent phone numbers and enabling calls and messaging across SMS, iMessage, WhatsApp, and other channels, giving each agent a persistent communication identity for real-world workflows.

Best fit

Best for

Developers building AI agents that must call and message real people

Audience

Who is it for?

AI agent developersVoice-product teamsAutomation platformsEnterprise innovation teams
Recommendation

Decision note

Confirm production pricing, number and channel availability, supported countries, carrier and messaging fees, throughput, compliance, opt-out handling, recording, data retention, webhooks, reliability, support, and enterprise terms.

Capabilities

Key features

Single API for agent phone-number provisioning

Inbound and outbound voice calling

SMS and iMessage communication channels

WhatsApp and expanding messaging support

Persistent identity for agent communications

Webhook-driven integration with agent workflows

Workflows

Use cases

Giving AI employees dedicated phone numbers

Automating recruiting calls and messages

Connecting agents to customer phone workflows

Building voice and messaging into agent products

Strengths

Pros

  • Purpose-built for agent telephony
  • Unifies calling and messaging access
  • Provides persistent identity for each agent
Considerations

Cons

  • Public production pricing is not listed
  • Channel availability may vary by region
  • Telecom compliance still requires review
Considerations

Limitations

Calling and messaging agents can misroute conversations, expose data, or violate consent and telecom rules. Builders must restrict recipients and content, verify identity, handle opt-outs, protect recordings and transcripts, test emergency cases, and provide reliable human escalation.

Cost

Pricing details

Free planUnknown
Free trialYes
Pricing context

Pricing note

AgentPhone is an early-stage developer platform and does not publish stable production pricing in the reviewed official sources. Y Combinator states that free test credits may be offered to builders who provide feedback, but this is not treated as an ongoing free plan or trial.

View official pricing
Compatibility

Supported languages

  • English
Connectivity

Integrations

LangChain

Sim

MCP

Specs

Technical details

PlatformsAPI
Multilingual supportUnknown
Login requiredYes
Open sourceNo
LicenseMIT integration toolkit
DeploymentCloud
CompanyAgentPhone
Launch year2026
Models / versionsPhone number API Voice calling Agent messaging
Editions / plansEarly developer access
Data confidenceHigh
Last verifiedJuly 30, 2026
Source code → Data source →
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Answers

Frequently asked questions

AgentPhone is telephony infrastructure designed for AI agents. It provides a single API for provisioning agent phone numbers and enabling calls and messaging across SMS, iMessage, WhatsApp, and other channels, giving each agent a persistent communication identity for real-world workflows.
Developers building AI agents that must call and message real people
Yes. The current profile indicates that a free trial is available.
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