Handset runs on your own machine — the client starts it, so there is no endpoint to ping. 15 installs a week from npm. Last commit 27 Aug 2026.
A business phone system for AI agents: send texts, place calls, read transcripts, buy numbers.
Nothing serious here today
Today is the operative word: we check Handset every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add handset -e 'HANDSET_API_KEY=<HANDSET_API_KEY>' -- npx -y @handset/mcp{
"mcpServers": {
"handset": {
"command": "npx",
"args": [
"-y",
"@handset/mcp"
],
"env": {
"HANDSET_API_KEY": "<HANDSET_API_KEY>"
}
}
}
}[mcp_servers.handset]
command = "npx"
args = ["-y", "@handset/mcp"]
env = { HANDSET_API_KEY = "<HANDSET_API_KEY>" }{
"mcpServers": {
"handset": {
"command": "npx",
"args": [
"-y",
"@handset/mcp"
],
"env": {
"HANDSET_API_KEY": "<HANDSET_API_KEY>"
}
}
}
}{
"servers": {
"handset": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@handset/mcp"
],
"env": {
"HANDSET_API_KEY": "<HANDSET_API_KEY>"
}
}
}
}Put your own value in place of
<HANDSET_API_KEY> (Handset API key. Use a test-mode key (hs_test_…) — simulated carrier, free. Live keys are refused unless HANDSET_ALLOW_LIVE=1).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
HANDSET_ALLOW_LIVE (Set to 1 to permit a live-mode key (the agent can then text and call real people at real cost)).
Alternatives to Handset
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Let AI agents place real phone calls from your verified number, with transcripts and recordings.
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Handset — questions
Answers built from our own checks of this server.