# AgentLine

> Give your AI agent a real phone number. Make calls, SMS, and handle inbound conversations through one API.

## Full-Text & Machine-Readable Endpoints

- [Complete site content for agents](https://agentline.cloud/llms-full.txt): Every blog post in full + the AgentLine skill file inlined. Use this for deep context.
- [AgentLine skill file (SKILL.md)](https://agentline.cloud/skill.md): The skill definition that lets an AI agent make/receive calls and SMS.
- [AI plugin manifest](https://agentline.cloud/.well-known/ai-plugin.json): Machine-readable service descriptor for plugin-style discovery.
- [XML sitemap](https://agentline.cloud/sitemap.xml): All crawlable routes.

## Core Pages

- [Home](https://agentline.cloud): AgentLine — AI Phone API. Phone numbers, voice, and SMS for AI agents.
- [Docs](https://agentline.cloud/docs): Full API reference — REST endpoints, code examples, authentication guide.
- [Pricing](https://agentline.cloud/pricing): Simple per-minute pricing for AI phone calls and SMS. $2.50 free credit.
- [Blog](https://agentline.cloud/blogs): Guides, tutorials, and insights on AI phone agents and telephony.
- [About](https://agentline.cloud/about): The phone API built for AI agents.
- [Contact](https://agentline.cloud/contact): Get in touch with the AgentLine team.

## API Reference

- Base URL: https://api.agentline.cloud
- Auth: Bearer token (API key starting with sk_live_) in the Authorization header.
- MCP server: https://api.agentline.cloud/mcp
- Skill file for AI agents: https://agentline.cloud/skill.md

## Blog Posts (20)

Each post is also available as clean markdown at `${base}/blog/{slug}.md` (replace `{slug}` with the post slug).

- [How to Get a Phone Number for Your AI Agent (OpenClaw, Hermes & More)](https://agentline.cloud/blog/phone-number-for-ai-agents-openclaw-hermes): Your AI agent can code, think, and automate — but can it answer a phone call? Here's how to get a real phone number for OpenClaw, Hermes Agent, and any AI agent in under 10 minutes. Plus: what agentic calling is and why it's the next frontier in 2026.
  - Markdown: https://agentline.cloud/blog/phone-number-for-ai-agents-openclaw-hermes.md
- [What You Can Build When Your AI Agent Has a Phone Number](https://agentline.cloud/blog/ai-agent-phone-number-real-use-cases): Giving your AI agent a phone number sounds interesting in theory. But what can you actually build? Here are five real use cases teams are running on AgentLine right now.
  - Markdown: https://agentline.cloud/blog/ai-agent-phone-number-real-use-cases.md
- [The Complete Guide to AI Agent Voice Calling in 2026](https://agentline.cloud/blog/ai-agent-voice-calling-complete-guide): In 2024, adding voice to an AI agent meant wrestling with WebSockets and telecom APIs. In 2026, it's a skill file. Here's what changed and how to get started.
  - Markdown: https://agentline.cloud/blog/ai-agent-voice-calling-complete-guide.md
- [OpenClaw Phone Numbers: Give Your Agent Voice Calling in 10 Minutes](https://agentline.cloud/blog/openclaw-voice-calling-agentline): Getting a phone number for your OpenClaw agent doesn't mean weeks of Twilio integration. Here's how to give your OpenClaw agent real voice calling in 10 minutes — plus why purpose-built AI telephony beats building it yourself.
  - Markdown: https://agentline.cloud/blog/openclaw-voice-calling-agentline.md
- [How to Give Your AI Agent a Phone Number in Under 10 Minutes](https://agentline.cloud/blog/ai-agent-phone-number-guide): Most AI agents can code, write, and think — but can they answer a customer call? Here's how to equip any AI agent with a real phone number in under 10 minutes.
  - Markdown: https://agentline.cloud/blog/ai-agent-phone-number-guide.md
- [AI Voice Agent for Customer Support: The 2026 Playbook](https://agentline.cloud/blog/ai-voice-agent-customer-support-playbook): Customer support teams are understaffed and overworked. Here's how AI voice agents handle the volume — without replacing your human team.
  - Markdown: https://agentline.cloud/blog/ai-voice-agent-customer-support-playbook.md
- [AI Agents with Phone Numbers: Why Twilio Is the Hard Way](https://agentline.cloud/blog/ai-agent-phone-calls-vs-twilio): Twilio was built for human call centers, not AI agents. If you've tried to add voice to your agent and hit a wall of WebSockets, here's why — and the alternative.
  - Markdown: https://agentline.cloud/blog/ai-agent-phone-calls-vs-twilio.md
- [How Sales Teams Use AI Agents to Never Lose a Lead Again](https://agentline.cloud/blog/ai-agent-call-tracking-sales-teams): 80% of sales leads never get a follow-up call. Not because the team is lazy — there aren't enough hours in the day. AI agents change the math.
  - Markdown: https://agentline.cloud/blog/ai-agent-call-tracking-sales-teams.md
- [AI Phone Agents for Healthcare: Cut No-Shows by 60%](https://agentline.cloud/blog/ai-phone-agent-for-healthcare-appointment-reminders): Missed appointments cost healthcare billions. A phone call from an AI agent the day before cuts no-show rates dramatically — without adding staff workload.
  - Markdown: https://agentline.cloud/blog/ai-phone-agent-for-healthcare-appointment-reminders.md
- [From Call Center to AI Stack: Automate Phone Work at Scale](https://agentline.cloud/blog/ai-agent-call-center-automation): The traditional call center — humans answering every call — doesn't scale. Here's how teams are building AI-first phone stacks that handle volume without burning out staff.
  - Markdown: https://agentline.cloud/blog/ai-agent-call-center-automation.md
- [Connect AgentLine to No-Code Platforms: Make, n8n & Zapier](https://agentline.cloud/blog/integrate-agentline-nocode-automation): Your AI agent can handle phone calls. But what if you could trigger those calls from a no-code workflow? Here's how to connect AgentLine to Make, n8n, and Zapier in minutes.
  - Markdown: https://agentline.cloud/blog/integrate-agentline-nocode-automation.md
- [5 Ways to Make Your AI Agent Sound Better on Phone Calls](https://agentline.cloud/blog/improve-ai-agent-phone-call-quality): AI phone agents are getting good, but they can still sound robotic. Here are five practical changes that make a real difference in how natural your agent sounds.
  - Markdown: https://agentline.cloud/blog/improve-ai-agent-phone-call-quality.md
- [AgentLine vs Bland AI vs Vapi: Which AI Phone API Fits You](https://agentline.cloud/blog/agentline-vs-competitors-comparison): Shopping for an AI phone API? Here's an honest breakdown of AgentLine, Bland AI, and Vapi - what they're each good at, where they fall short, and which one fits your use case.
  - Markdown: https://agentline.cloud/blog/agentline-vs-competitors-comparison.md
- [SMS for AI Agents: Text Messaging with AgentLine](https://agentline.cloud/blog/sms-for-ai-agents-agentline-guide): Voice calls get the attention, but SMS is where a lot of AI agent communication actually happens. Here's how to use AgentLine's SMS features to handle inbound texts and build text-based workflows.
  - Markdown: https://agentline.cloud/blog/sms-for-ai-agents-agentline-guide.md
- [How a SaaS Startup Automated 80% of Customer Calls](https://agentline.cloud/blog/agentline-case-study-automated-customer-support): A small SaaS team was drowning in support calls. Three months after switching to AgentLine, their AI handles 80% of calls on its own. Here's exactly how they did it.
  - Markdown: https://agentline.cloud/blog/agentline-case-study-automated-customer-support.md
- [AI Agent Phone Integration: 7 Common Fixes](https://agentline.cloud/blog/troubleshoot-ai-agent-phone-integration): Spent hours trying to get your AI agent to make phone calls and something's still not right? You're not alone. Here are the seven most common issues and exactly how to fix them.
  - Markdown: https://agentline.cloud/blog/troubleshoot-ai-agent-phone-integration.md
- [Build an AI Voice Assistant for Your Business in One Day](https://agentline.cloud/blog/build-ai-voice-assistant-agentline): You don't need a telecom engineering degree to build a voice assistant. With AgentLine, you can have a working AI that answers calls, handles questions, and routes to humans in a few hours.
  - Markdown: https://agentline.cloud/blog/build-ai-voice-assistant-agentline.md
- [AgentLine API: Developer Walkthrough with Code Examples](https://agentline.cloud/blog/agentline-api-developer-walkthrough): Skip the marketing fluff. Here's a hands-on walkthrough of the AgentLine API: authentication, making calls, reading transcripts, and building your first integration with real code examples.
  - Markdown: https://agentline.cloud/blog/agentline-api-developer-walkthrough.md
- [How to Write AI Phone Agent Prompts That Actually Sound Human](https://agentline.cloud/blog/ai-phone-agent-prompts-best-practices): The difference between an AI agent people hang up on and one they have real conversations with comes down to the prompt. Here's how to write prompts that make your agent sound like a person, not a robot.
  - Markdown: https://agentline.cloud/blog/ai-phone-agent-prompts-best-practices.md
- [What Is AgentLine? AI Telephony for Beginners](https://agentline.cloud/blog/what-is-agentline-beginners-guide): New to AI phone agents? Here's what AgentLine is, how it works, and whether it's the right tool for what you're building. No jargon, no hype.
  - Markdown: https://agentline.cloud/blog/what-is-agentline-beginners-guide.md