Programmable Unified Communications for the AI Era
SignalWire provides APIs, SDKs, and a programmable control plane that orchestrates complex communication workflows, powering voice, messaging, video, and AI agents at global scale.
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SignalWire provides APIs, SDKs, and a programmable control plane that orchestrates complex communication workflows, powering voice, messaging, video, and AI agents at global scale.
Unlike traditional CPaaS providers that expose only APIs, SignalWire provides a programmable unified communications control plane that orchestrates the full lifecycle of real-time interactions. Developers get simple APIs and SDKs to build powerful voice, messaging, video, and AI experiences while the platform manages the complexity of state, routing, and media. The same workflow that works at 10 calls scales to 10,000.
Build voice-driven AI agents that listen, respond, act, and integrate with your systems in real time.
Start BuildingBuild calling, messaging, routing, and real-time communications workflows with APIs and SDKs designed for developers.
View Code SamplesOrchestrate state, routing, media, and AI interactions from a unified control plane built for real-time systems.
Learn MoreMeet Sigmond. A live AI agent built on SignalWire. Ask him about our platform, AI architecture, or FreeSWITCH. He can search docs, answer questions, and even collect your info for a follow-up. This is real-time voice AI in action.
SignalWire provides APIs for voice, messaging, and video, allowing developers to build ultra-low latency, high-reliability communications. Built on a fully owned telecom and AI infrastructure, our API-first, composable architecture enables rapid deployment, seamless scalability, and future adaptability—without third-party dependencies.
SignalWire’s fully owned telecom infrastructure delivers real-time voice and video interactions with sub-500ms response times—no third-party dependencies.
Developer-first APIs for voice, video, messaging, and AI provide complete control to build, customize, and scale beyond the limitations of traditional CCaaS platforms.
Integrate AI-driven automation, call routing, and analytics directly with PSTN, SIP, and WebRTC on a single, unified platform.
Ensure GDPR, HIPAA, and SOC 2 Type II compliance with regionalized data handling, fraud prevention, and high-volume secure communications.
Anything they can do, you can do better.
No more hacking things together to create your vision. Our APIs are designed to work together and grow with you so that you can have a full arsenal of communications tools at your fingertips.
Build What's NextStart building today with access to user guides that help you get the information you need to work with any of our APIs or SDKs.
Integrate SignalWire in your InstanceFrom sharing code snippets to brainstorming the next big idea join a community of developers that are passionate about building the next generation of communications.
Join the ConversationBuild AI voice agents that deliver sub-second (~500ms) responses to over 2 billion people worldwide.
Learn MoreAutomate Tier 1 support, manage call volume, and streamline escalations without the overhead of traditional contact center platforms.
Learn MoreTranscribe live calls, detect sentiment with AI, and translate languages in real time via APIs.
Learn MoreRoute data through in-region infrastructure with APIs to meet GDPR, HIPAA, and sovereignty requirements.
Learn MoreReplace outdated phone trees with conversational AI that understands intent and adapts in real time.
Learn MoreTrain AI agents on your documents to deliver accurate, grounded responses using real-time retrieval.
Learn MoreSignalWire provides the communications control plane for modern applications. Instead of stitching together APIs to manage calls, messages, video sessions, and AI interactions, developers use SignalWire to orchestrate communication workflows from a single infrastructure layer. Built by the creators of FreeSWITCH, SignalWire gives teams direct control over the lifecycle, routing, and state of real-time communications.
Traditional CPaaS platforms provide transport APIs for placing calls or sending messages. Developers must build the logic to manage state, routing, and interaction flow themselves. SignalWire provides the communications control plane where those interactions are orchestrated. Calls, messaging, video sessions, and AI agents operate within a unified infrastructure layer that manages the lifecycle of communication sessions directly.
Call Fabric is SignalWire's implementation of Programmable Unified Communications. It models every communication resource — phone numbers, SIP endpoints, AI agents, video rooms, scripts, and users — as addressable objects that can be connected and instructed programmatically. Rather than assembling interactions from separate APIs, Call Fabric unifies them under a single control layer where state, routing, and lifecycle are managed by the platform.
Programmable Unified Communications (PUC) is an architecture that combines the flexibility of programmable APIs with the completeness of a unified communications platform. Rather than integrating separate tools for voice, video, messaging, and AI, PUC platforms like SignalWire allow all channels to be orchestrated from a single, consistent developer interface, with each component addressable and interoperable by design.
SignalWire is SOC 2 Type II certified and aligns with GDPR, CCPA, and PCI-DSS. For healthcare customers, SignalWire offers HIPAA-compliant infrastructure with Business Associate Agreements (BAAs) covering voice, messaging, fax, video, and AI workflows under a single agreement. Full certification details are available at SignalWire's Trust Center.