API platform that provisions phone numbers for AI agents and supports SMS, voice calls, webhooks and MCP-connected agent workflows.
Product sources: AgentPhone official docs + Y Combinator S26 company/launch page
AgentPhone is telephony infrastructure for AI agents. Developers can provision phone numbers through an API and use them for SMS and voice interactions, with webhook-driven and hosted voice modes. The product is designed to give an agent a persistent communications identity without requiring developers to assemble the underlying telecom pieces themselves.12
Current documentation exposes usage endpoints, number limits, API-key authentication and webhook-oriented setup. The YC launch surface also describes broader agent-communications ambitions, including additional messaging channels, but AiToolMap confines current product facts to the capabilities verified in the present official documentation.3
AgentPhone currently uses pay-as-you-go billing. Each account starts with $5 in free credit and requires no credit card for that starting balance. Phone numbers cost $3 per month; voice is $0.13/minute in webhook mode and $0.22/minute in hosted mode; SMS costs $0.02 per inbound or outbound message; call recording is an optional $5/month add-on. Voice is billed per second with a one-cent minimum.1
Current FAQ documentation says self-serve phone-number provisioning is limited to US and Canadian numbers, with area-code requests supported and international numbers planned. Account-level number limits are exposed via the usage API and can be raised by contacting AgentPhone.2
The documentation is relatively concrete for an early-stage telecom API: it publishes rates, billing units, provisioning behavior and usage-monitoring endpoints. AiToolMap has not hands-on tested delivery rates, call quality, webhook latency, number reputation, carrier behavior, recording reliability or telecom-compliance handling.1
Y Combinator independently corroborates AgentPhone as an active Spring 2026 company with a two-person founding team and the same phone-infrastructure-for-agents product surface. Its launch post lists several teams as users and describes simplified compliance; those statements are company-supplied launch claims and are not treated as independent adoption or compliance validation.3
The fixed 50-source panel found no current exact-product independent benchmark, substantive review or eligible user-rating corpus. Forty-three sources returned no relevant exact-product result and seven canonical domains were crawler-inaccessible. Missing external coverage is neutral.
AgentPhone is best for developers building agents that need to call or text real people and businesses while keeping phone-number provisioning and usage behind an API. It is particularly relevant to recruiting, support, scheduling and operational agents where telephone identity is part of the workflow.3
It is less suitable today for products requiring broad international number coverage or buyers who need independently validated telecom-compliance, delivery or uptime evidence before deployment. Teams should test carrier behavior, opt-in/consent handling, recording rules, abuse controls and failure modes for their jurisdictions and use cases.
simple agent-specific value proposition; transparent pay-as-you-go pricing; free starting credit; API-first provisioning; SMS and two voice modes; usage monitoring; optional recording; and a clear self-serve route for US/Canada numbers.12
young company/product; current number geography is limited; no exact-product independent reliability/review corpus surfaced; and named-user/compliance claims are not independently validated in this desk review.3
Products matched by shared tasks, audience, workflow, product type and capabilities.