Connect your software to Numberline.
Use the API, the MCP server, and webhooks to work with your business number from your own code and AI tools.
API
The Numberline API connects your own software to your phone system. Calls and texts sent through the API count the same as the ones your team sends from the app, and texts go to customers who texted your business first.
MCP server
Connect ChatGPT or Claude to your Numberline account through the Numberline MCP server. Ask it to set up your phone system, change settings, or read your data. Available actions depend on your plan.
Webhooks
Send call, text, and voicemail events to a URL you choose, so your own tools can act on them.
SIP for custom AI agents
Connect an AI agent you built yourself over SIP and send an extension’s calls to it.