Low-code scripts
Design call flows with Callr Actions — a declarative, YAML-based framework inspired by GitHub Actions. Build IVRs, routing logic, recordings, AI integrations, and data pipelines without managing servers.
Overview
Callr Actions is a low-code framework for building voice applications. Write call logic in YAML — a human-readable format — and deploy scenarios via the Portal or API. No servers to manage, no SDKs to install, no infrastructure to maintain.
Architecture
Scenarios are organized around branches: inbound-call, inbound-sms, api-initiated, and hangup. Each branch contains a sequence of actions that execute in order. Use goto to jump between branches and if for conditional logic.
Available Actions
30+ built-in actions: dial@v1 (make calls), say@v2 (TTS), gather@v2 (DTMF input), fetch@v2 (HTTP requests), javascript@v1 (inline code), openai@v2 (AI integration), email@v1, sms@v1, startRecording@v1, and more. Chain actions together to build complex workflows.
Developer Experience
Built-in code editor in the Portal with autocomplete and live validation. JSON Schema available for IDE integration. Live Debugger for real-time testing. Ready-to-use templates for common scenarios. Expressions engine with JavaScript-based runtime for dynamic values.
Others features
We own our network
Global coverage
Order numbers in just one click in over 220 countries, including premium, vanity or toll-numbers.
Encrypted and secure
We offer state-of-the-art data encryption with HTTPS, SIP TLS & SRTP.
Reliable network
With multiple data centers and servers around the world, we offer a robust service you can rely on.
Registered carrier
We operate our own network for better performance, localization and support.
