AlterPhone MCP is answering right now. Last checked 5 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, 22 h ago · rules 3dff92dd89df
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 5 min ago.
claude mcp add phone-calls --transport http https://mcp.alterphone.app/mcp{
"mcpServers": {
"phone-calls": {
"url": "https://mcp.alterphone.app/mcp"
}
}
}[mcp_servers.phone-calls]
url = "https://mcp.alterphone.app/mcp"{
"mcpServers": {
"phone-calls": {
"url": "https://mcp.alterphone.app/mcp"
}
}
}{
"mcpServers": {
"phone-calls": {
"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 | 181 ms | 5 min ago |
Alternatives to AlterPhone MCP
same job, measured the same waySelf-hosted MCP voice agent that places phone calls on your behalf via Retell.
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
ElevenLabs Conversational AI: agents, calls, conversations, and knowledge base for MCP hosts
Outbound phone calls placed by an AI voice agent to book, ask, or confirm on your behalf.
Open-source all-in-one MCP-first customer platform: KB, Conversations, CRM, CMS, Outreach, Analytics
Price, hold, and burn $THREE on Solana — the first MCP server whose actions burn a token.
Read Slack conversations, threads, user info, and search messages from your MCP client.
AlterPhone MCP — questions
Answers built from our own checks of this server.