--- title: "API overview" slug: "api-overview" type: "index" canonical: "docs.voiso.com/api-overview" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.voiso.com/llms.txt > Use this file to discover all available pages before exploring further. # API overview 12 sub categories ## [Call Detail Records (CDR)](https://docs.voiso.com/apidocs/call-detail-records-cdr.md) 1 article ## [User management](https://docs.voiso.com/apidocs/user-management.md) 4 articles ## [Voice](https://docs.voiso.com/apidocs/voice.md) 3 articles ## [SMS](https://docs.voiso.com/apidocs/sms.md) 2 articles ## [Digital messages](https://docs.voiso.com/apidocs/digital-messages.md) 3 articles ## [Campaigns](https://docs.voiso.com/apidocs/campaigns.md) 4 articles ## [Contact center management](https://docs.voiso.com/apidocs/contact-center-management.md) 1 article ## [Agent application](https://docs.voiso.com/apidocs/agent-application.md) 3 articles ## [Inbound routing](https://docs.voiso.com/apidocs/inbound-routing.md) 2 articles ## [Number management](https://docs.voiso.com/apidocs/number-management.md) 2 articles ## [Conversations](https://docs.voiso.com/apidocs/conversations.md) 2 articles ## [Scheduled callback](https://docs.voiso.com/apidocs/scheduled-callback.md) 2 articles