Agents that plug into the systems you already run.
Callex connects to your telephony, CRM, helpdesk, and internal APIs, so agents don’t just answer questions. They look things up, take action, and close the loop.
Bring your numbers and carriers.
Connect over SIP to major carriers and contact-center platforms, or port your existing numbers. Go live without ripping out your phone stack.
- SIP & major carriers
- Keep your existing numbers
- Works with your contact center

Connected to your system of record.
Native connectors for common CRM and helpdesk platforms keep call records in sync, and anything custom connects over REST and webhooks. Agents read context before they speak and log outcomes when they’re done.
- Native CRM & helpdesk connectors
- REST & webhooks for anything custom
- Read context, write outcomes
Real actions, safely scoped.
Expose your backend as tools the agent can call. Agent actions are authenticated, scoped, and logged, so agents do real work without overreaching. Subscribe to call events over webhooks to keep your systems in sync.
- Function calling into your APIs
- Scoped, signed, and auditable
- Guardrails on agent actions
- Webhook events for call lifecycle

Grounded answers, graceful handoff.
Agents ground their answers in your knowledge base and cite the source. And when a human is the right call, they hand off with full context.
- Retrieval over your knowledge base
- Cited, grounded responses
- Warm handoff with full transcript
Ready to put voice AI into production?
Talk to our team about your use case and see Callex running on your own calls.