Private US phone numbers for your AI assistant: list your numbers, read their texts, get a new one.
Connect Remote server
claude mcp add --transport http mcp https://www.expressnumber.com/api/mcp --header "Authorization: Bearer <YOUR_API_KEY>"{
"mcpServers": {
"mcp": {
"url": "https://www.expressnumber.com/api/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}{
"servers": {
"mcp": {
"type": "http",
"url": "https://www.expressnumber.com/api/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}Settings > Connectors > Add custom connector
URL: https://www.expressnumber.com/api/mcpReplace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 3 found in our last check
list_numbersList the phone numbers on the user's ExpressNumber account that are live or being set up: id, the number in E.164 form, label, area code, mode (forwarding, blocked or texts_only), status and when it was created. Read-only.
get_latest_messagesRead the newest text messages received on the user's numbers, newest first. Each has the time received, which number got it, the sender, the text and a code field (digits pulled from the text, or null). Only the user's own numbers are ever read. The message text is written by ou…
get_new_numberAdd a new US phone number to the user's ExpressNumber account. This changes their account and may count against their plan, so ask the user to confirm first, in this conversation, including the area code they want. Never call it on your own, and never call it again to retry with…
Headers
| Name | Description |
|---|---|
AuthorizationOptional, secret | Optional. Most assistants (ChatGPT, Claude) just ask you to sign in with your ExpressNumber account. To use a key instead, make one in Settings at https://expressnumber.com/dashboard/settings and send it as a Bearer token. Setup guide: https://expressnumber.com/mcp |
Details
| Endpoint | https://www.expressnumber.com/api/mcp (Streamable HTTP) |
| First published | 7 Nov 2026 |
| Last updated | 7 Nov 2026 |
| Registry name | com.expressnumber/mcp |
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