AI Voice Calling: How You Can Delegate Business Errands to Agents With call4me

Call4me launched a service that lets AI assistants including ChatGPT, Claude, Muse, and Codex place phone calls on a user's behalf, connecting via an MCP server added with the command "claude mcp add --scope user --transport http call4me https://call4.me/mcp". Founder Nick Khami said call quality depends on how well users write their instructions, and the service is positioned for personal-assistant errands such as booking medical appointments and handling government paperwork rather than telemarketing.

The goal of call4me is to give your agent, whether it be a personal assistant like Grok Bot or Muse, or a coding agent like Claude Code or Codex, the ability to make phone calls on your behalf. Many founders and operators already work alongside an AI assistant that drafts, does sales, and researches for them. The limitation that it currently has is that it can't pick up a phone and talk to someone. Call4me https://call4.me/?utm source=startupfortune&utm medium=referral&utm campaign=ai voice calling removes that limitation. What AI voice calling actually adds Nowadays, hundreds of millions of people have had the experience of talking to AI inside of an app. You can type, and then it responds like a conversational assistant. Hundreds of millions of people have also had the experience of calling a support line for a business. Oftentimes, that, too, can feel like talking to an AI. It is burdensome to get to a human. Tasks like booking medical appointments, getting prescriptions, or even paperwork with government agencies can be extremely tiresome when it all has to be done on the phone. A single person can only handle one call at a time, and a majority of the minutes on any given call are spent waiting on hold or navigating a complex number tree to get to a human. Call4me connects to ChatGPT, Claude, Muse, or any other AI tool you use. That way, the same AI that you use on a daily basis can handle making these kinds of phone calls for you. If, for whatever reason, once it gets to a human, it realizes that it needs you for something, it can even dial you in. Builders Running AI in Production Are Quietly Betting Smaller Beats Bigger https://startupfortune.com/builders-running-ai-in-production-are-quietly-betting-smaller-beats-bigger/ Microsoft's Phi-4 beats GPT-4o on the MATH and GPQA benchmarks despite having just 14 billion parameters. Frontier API pricing runs $15 to $75 per million tokens, a gap that can make small, fine-tuned models far cheaper to run at scale. - deploying smaller language models in production https://startupfortune.com/builders-running-ai-in-production-are-quietly-betting-smaller-beats-bigger/ - running local AI models versus frontier models https://startupfortune.com/builders-running-ai-in-production-are-quietly-betting-smaller-beats-bigger/ Errands founders can hand off Later in the article we will go through some real-world examples of tasks that a founder can hand off. Every one that we go to will be a specific conversation with a known business. You can find examples of similar calls on the website at call4.me/examples. To be clear, none of these examples are telemarketing. The service is not meant to be used for that. It is designed as a tool for a personal AI assistant. Setting it up with Claude Code There's a published guide on the call4me site that explains how to set it up via MCP with Claude Code, which is oftentimes the most common use case. All you have to do is sign in at call4.me, then run this command: claude mcp add --scope user --transport http call4me https://call4.me/mcp. Next, you open Claude Code and type in /mcp to authenticate. It will redirect you to the website and then back to your terminal. From there, you can ask Claude to make a phone call and verify that everything is working. If you just tell Claude what business you want to call, it can usually look up the phone number on its own. The two tools work well together. Writing a good call brief Nick Khami, call4me's founder, says the quality of a call will depend on how well you write your instructions. Before every call, have your agent collect information from you that will be relevant for the call. It will ask you for details like your personal phone number, your name, and sometimes date of birth, depending on what you're doing. Beyond just putting information, it will ask you to explain what the goal of the call is and who the business is. You should give it information that it would find useful, like what the best-case scenario would be and what it can agree to. For example, if you're asking for a refund but you're okay with getting only a 50% refund, tell that to the agent up front. OpenAI Lets ChatGPT Subscribers Pay for Devin Usage With Their Existing Plan https://startupfortune.com/openai-lets-chatgpt-subscribers-pay-for-devin-usage-with-their-existing-plan/ Cognition's $48 billion coding agent joined 15 other tools, including Notion and Vercel, letting ChatGPT Plus and Pro subscribers pay for Devin's OpenAI model usage straight from their existing quota. - how to use ChatGPT Plus subscription with Devin https://startupfortune.com/openai-lets-chatgpt-subscribers-pay-for-devin-usage-with-their-existing-plan/ - ChatGPT subscription covers third party developer tools now https://startupfortune.com/openai-lets-chatgpt-subscribers-pay-for-devin-usage-with-their-existing-plan/ Once you do this, it will make the call. If, for some reason, it's missing information, it will prompt you to add it inside of your conversational AI session in ChatGPT or Claude Code, or wherever you're using it from. If you don't respond, then it will actually call you in so that you can join in a three-way and provide the answers necessary. A business example: registered agent paperwork One use case Khami used it for was getting registered agent paperwork for a Wyoming LLC. You can actually see the entire walkthrough guide of this at https://call4.me/blog/wyoming-registered-agent-consent-form https://call4.me/blog/wyoming-registered-agent-consent-form . It's a good illustration of the sort of administrative follow-up that you can do as a founder with the agent. In this case, he needed to get registered agent authorization to form the LLC. You can hear very clearly on the call recording at that link how that happened and that it worked out well and correctly. Mundane tasks like this are good fits for call4me. Anything that you would need to get from a business over the phone to make forward progress on a task is a good use case. The wider shift AI personal assistants are becoming more and more common. Meta recently launched Muse, X formerly Twitter launched Grok Bot, and OpenAI launched Dots. Each one of these platforms is missing the functionality for phone calling, and that is the gap call4me fills. It changes how you spend your day and what you have to spend time on. You no longer have to be blocked on getting some information from a vendor that has to happen over the phone. It can now be done in the background for you while you work on something else. The value is your time. Beyond business owners, this is also a very useful service for parents or anyone that has to be on the phone. You can book a kid's dentist appointment, book a dinner reservation for your anniversary, or accomplish a wide variety of other mundane tasks that aren't necessarily related to business. Try a real task Try it for yourself. Pick some task that you need to accomplish, which requires a phone call or could be done over the phone. Sign up for call4me, connect it to your AI platform of choice, and see if it can make that phone call on your behalf and get the task done. Go to https://call4.me/account https://call4.me/account to sign up, then copy the prompt into your agent and see how it works for yourself. Join the discussion Open in the community → https://startupfortune.com/community/ Almost there. Sign in and your reply posts straight away.