What developers build on Wixzel Voice
Wixzel Voice is a voice AI API for building AI agents that place and answer real phone calls over your own SIP trunk, or talk to people in your web and mobile apps. One API key and one prepaid balance cover every voice engine, billed per second of actual usage. Each page below names the API resources a build uses, the voice engine that suits it, and what a month of calls costs at the published prices.
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Build an agent that answers the phone, checks availability and books an appointment, over your own SIP trunk, with the booking written back through the API.
Upload leads, start a campaign, and have an agent call each one over your own SIP trunk and ask your qualifying questions. Every call is a record with its status and transcript, linked to the lead.
Answer a support number with an agent that reads from a knowledge base you upload, handles the common questions, and leaves a transcript of every call.
Run phone agents in Indian languages on models built for them, with the sarvam engine covering speech-to-text, the language model and text-to-speech end to end.
Put an agent in a browser page, a Flutter app or a kiosk with no SIP trunk and no phone number: your server mints a one-minute session, the app streams audio over a WebSocket, and the session is billed like a call.
Connect Claude Code, claude.ai, Claude Desktop, Cursor or any MCP client to your account, and let an AI agent connect a carrier, build a voice agent, place calls, run campaigns and read transcripts, with every tool that spends money asking first.
Your agent can use the apps you already use
Connect an app that hosts an MCP server. The agent calls its tools while the caller is on the line.
33 apps with one-click setup, or any MCP server of your own. Tool calls are free; only the extra model tokens are metered.
Your agent
Search contacts, companies and deals, for example by phone number.