AgentLine launched on Hacker News this week with a straightforward pitch: give your AI agent a phone number. The service handles outbound calling, inbound conversations, and SMS โ all routed through a single Skill that works with OpenClaw, Hermes, Claude Code, Cursor, and any compatible AI framework.
Setup in 30 Seconds
The installation process is refreshingly minimal. Users download one skill file from agentline.cloud/skill.md, add it to their preferred AI agent, set an AGENTLINE_API_KEY environment variable, and they're ready. Calling someone requires nothing more than saying "call +1234567890" โ the agent handles the rest. AgentLine streams raw audio in real-time, transcribes it on the backend, and delivers clean JSON payloads directly to the agent's webhook endpoint.
Real-World Use Cases
The demo page shows practical applications that go beyond novelty. One example displays a Stripe verification code (729 304) being read aloud by an AI agent. Another simulates a GitHub two-factor authentication flow where the agent speaks the login code (482 910). A more complex scenario demonstrates multi-step delegation: "Can you reschedule my 3 PM sync and call my manager Sarah to tell her?" โ with the agent verbally dialing Sarah after completing the calendar task.
Pricing and Availability
New users receive $2.20 in free credit on signup, described as enough for an initial test call. Currently, AgentLine supports US and Canada phone numbers only. The service positions itself as a simpler alternative to Twilio for AI-to-human voice workflows, handling transcription and webhook routing that developers would otherwise need to build themselves.
Key Takeaways
- One-file installation works with Claude Code, Cursor, OpenClaw, Hermes, and any compatible agent framework
- Real-time bidirectional conversation with audio streamed and transcribed before hitting your webhook
- $2.20 free credit available; US and Canada numbers supported at launch
- Built specifically for AI agents rather than general telephony use cases