Tools

Let an agent look things up and do things while the caller is on the line.

• Tools overviewWhat a tool is, the three kinds you can add, and how an agent decides to use one during a call.
• Create an API toolCreate an API tool that calls your own web endpoint during a call, attach it to a voice or WhatsApp agent, and test it before going live.
• Parameters and authenticationDefine what the model must send, how values reach your endpoint, and how to protect it with a key or token.
• Connected-app toolsTurn an action of a connected app, such as creating a Google Calendar event or saving a CRM lead, into a tool an agent can use.
• MCP serversConnect an MCP server, see the tools it offers and give them to your voice and WhatsApp agents, with no endpoint to build.
• Test and troubleshoot toolsTry a tool with sample values, read the result, and fix invalid parameters, timeouts and failing APIs.