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Day Zero Fund portfolio company

AgentLine

Communication infrastructure for AI agents.

Pre-seed AI Infrastructure Active

About AgentLine

AgentLine gives AI agents real communication endpoints across phone, SMS, email, and voice so they can participate in the workflows people and businesses already use.

What they do

AI agents are moving beyond chat windows into operational work. To act reliably, they need identity, reachability, and access to established communication networks—not another isolated interface.

AgentLine is building a developer-first communications layer that lets teams connect agents to phone numbers and messaging channels through APIs designed for autonomous software.

Product

How AgentLine creates value

01

Programmable identity

Give an agent a persistent number and communication identity it can use across real customer workflows.

02

Multi-channel reach

Connect voice, SMS, and email interactions without forcing users into a new interface.

03

Agent-native DX

Simple APIs and tooling make communications a composable primitive for AI product teams.

Day Zero Fund portfolio

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