Have Claude Code buy a phone number and set up reminder calls

Do this with your agent

How you could do the same thing today. “Official MCP” is the vendor's own server. “Manual” means you use the provider's own site or app.

Twilio Programmable VoiceAPI from the vendor
Named in this story. Place and receive phone calls and SMS from code.
KaiCallsWe make this
KaiCalls lets an agent place and answer real calls through MCP, using the make_call action. Kai Backup is $10 a month, with a $2 first week. This story did not use KaiCalls.
24 calls & messaging servers and APIsBrowse
Every MCP server and API we list for this kind of job, with install lines, auth and price.

We make KaiCalls. Made by the team behind KaiCalls, which is one of the listings. We have no tie to any other provider here, and there are no affiliate links.

Add Real World MCP to your agent

22 live tools

ClaudeOne click (opens in a new tab)CursorOne clickSomething else?Setup guide

Open the Add custom connector dialog , prefilled. Or go to Customize → Connectors → + Add → Add custom connector.
Name it Real World MCP, paste this URL, pick No sign in, then Add.

https://www.realworldmcp.com/api/mcp

On ChatGPT on the web, open Plugins, click +, then Add custom MCP server.
Name it, paste this URL under Connection, and pick No authentication.
Accept the warning, click Create as a plugin, then install it.

https://www.realworldmcp.com/api/mcp

Run once in your terminal, then type /mcp in Claude Code to see the tools.

claude mcp add --transport http realworldmcp https://www.realworldmcp.com/api/mcp

Run this once, or add the two lines below to ~/.codex/config.toml.

codex mcp add realworldmcp --url https://www.realworldmcp.com/api/mcp

Gemini app: on gemini.google.com, Settings → Connected Apps, then under Custom apps paste this URL and click Next.

https://www.realworldmcp.com/api/mcp

Gemini CLI:

gemini mcp add --transport http --scope user realworldmcp https://www.realworldmcp.com/api/mcp

Add to Cursor opens Cursor with the server filled in. Or add this to ~/.cursor/mcp.json.

{
  "mcpServers": {
    "realworldmcp": {
      "url": "https://www.realworldmcp.com/api/mcp"
    }
  }
}

Run this once (macOS or Linux shell), or add the server to .vscode/mcp.json. Then use it from Copilot Chat in agent mode.

code --add-mcp '{"name":"realworldmcp","type":"http","url":"https://www.realworldmcp.com/api/mcp"}'

In Cascade's MCP menu, choose Open MCP config file and add this server. Then press refresh.

{
  "mcpServers": {
    "realworldmcp": {
      "serverUrl": "https://www.realworldmcp.com/api/mcp"
    }
  }
}

Any client that speaks Streamable HTTP MCP. No auth. Most take this JSON, or just the URL.

{
  "mcpServers": {
    "realworldmcp": {
      "url": "https://www.realworldmcp.com/api/mcp"
    }
  }
}

Free, no key, no account. Your agent gets search_tools, get_tool and call_tool and 22 live tools. All clients and full steps

ChatGPT, Claude, Codex, Cursor, GitHub Copilot, Gemini and Windsurf are trademarks of their respective owners. Real World MCP is not affiliated with them, and compatibility does not imply endorsement or partnership.

Related use cases

Make phone calls from Claude Code or Codex
A developer released call4me, an open-source MCP server that lets Claude Code and Codex place calls to cancel subscriptions, book appointments or change flights, and says he has handled dozens of tasks with it.
Calls & messagingClaude Code, CodexSource: the vendorOct 1, 2026 · Hacker News
Phone your laptop to start a coding agent task
Call My Laptop gives a Mac its own number: you call it to start or resume a Codex or Claude Code session and it calls back when the task is done. The maker uses it while out cycling.
Calls & messagingClaude Code, CodexSource: the vendorAug 17, 2026 · Hacker News
Schedule reminder calls that repeat until you answer
A user had Claude build a Twilio script that phones them before appointments, reads the message, and keeps calling until they say 'message received'. They now schedule calls by asking Claude Code in that folder.
Calls & messagingClaude CodeJun 8, 2026 · Hacker News
Get a car service quote without waiting on hold yourself
The agent sat through the hold queue at a San Francisco tire shop and came back with $129.99 for a standard alignment, about $210 for lifetime, and word that walk-ins take one to two hours.
Calls & messagingAgent not statedSource: the vendorOct 7, 2026 · Blog post

The story is in our words. The source was opened on Nov 2, 2026 and a key phrase was found in it. See all use cases.