Show HN: Open-source phone calling infra for AI agents

Category: infrastructure

Tags: telephony, ai-agents, voice-api

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 7, Utility: 7)

AgentLine is an open-source telephony API designed for AI agents, enabling them to make and receive phone calls and SMS via a simple REST API or MCP server. It bundles speech-to-text, LLM, and text-to-speech into a ready-to-use voice pipeline, reducing setup complexity compared to traditional telephony platforms. Its unique MCP and skill file integrations make it a novel tool for connecting AI agents to real-world communication channels.

Target audience: backend devs, ai-ml engineers, devops

Repository: https://github.com/AgentLineHQ/AgentLine · Python · MIT · 3 stars

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