ExpressNumber for Claude.ai

com.expressnumber/mcp

Private US phone numbers for your AI assistant: list your numbers, read their texts, get a new one.

client:Claude.ai transport:streamable-http tools:3

Install ExpressNumber in Claude.ai

Settings → Connectors → Add custom connector

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

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

list_numbers
get_latest_messages
get_new_number

ExpressNumber in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

ExpressNumber MCP server