AlterPhone MCP is answering right now. Last checked 7 min ago. Last commit 16 Sep 2026.
Place real phone calls and hold spoken conversations on a user's behalf, billed per minute.
What the code does
We read the source, 2 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
const child = spawn(npx, ["-y", "mcp-remote@latest", MCP_URL, ...process.argv.slice(2)], {
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.
claude mcp add phone-calls --transport http https://mcp.alterphone.app/mcphttps://mcp.alterphone.app/mcp[mcp_servers.phone-calls]
url = "https://mcp.alterphone.app/mcp"{
"mcpServers": {
"phone-calls": {
"url": "https://mcp.alterphone.app/mcp"
}
}
}{
"servers": {
"phone-calls": {
"type": "http",
"url": "https://mcp.alterphone.app/mcp"
}
}
}This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.alterphone.app/mcp | streamable-http | sign-in | 213 ms | 7 min ago |
Alternatives to AlterPhone MCP
same job, measured the same wayRead Spruce Health contacts, conversations, messages, phone lines and team members (read-only).
Self-hosted MCP voice agent that places phone calls on your behalf via Retell.
Behavioral read on one speaker in a sales conversation. Big Five standings plus how to use them.
MCP server for SuperPhone — contacts, conversations, tags and consent-based text messages.
Read-only MCP server for Hostaway PMS — guest conversations, reservations, and listings
AI agent dating — personality matching, compatibility scoring, and real conversations on inbed.ai
AI voice agents on real phone numbers: build agents, place and receive calls, read call summaries.
Send and read OpenPhone messages, calls, contacts and phone numbers.
AlterPhone MCP — questions
Answers built from our own checks of this server.