We’re excited to announce the release of the SignalWire Agents SDK—a Python-native toolkit that makes it faster and easier to build real-time AI voice agents with built-in support for SIP, PSTN, WebRTC, and messaging.No more piecing together APIs or handling telecom complexity. With the Agents SDK, you can:

• Build AI agents using familiar Python tools

• Run AI Agents as microservices, Lambdas, or CGI scripts—your choice

• Add skills like search, knowledge lookups, or custom tool calls with one line of code

• Deploy production-ready agents with ultra-low latency (~500ms globally)

• Use tools built for Model Context Protocol (MCP), an emerging standard for defining AI tool interfaces, without rewriting them.

Whether starting from scratch or scaling a mature voice AI application, the Agents SDK lets you focus on building great conversations, not wiring up infrastructure. No SIP expertise required, just bring your Python skills.

Tired of watching your long SMS messages get split into weird chunks? We are too. That’s why SignalWire now supports sending long text messages as a single MMS — no more guessing where your message will get cut off.

When set to true, this parameter forces the message to be sent as an MMS, even if the message body contains only text.

1. cXML: use the SendAsMms parameter

2. RELAY: use the send_as_mms parameter

📚 Docs: https://developer.signalwire.com/rest/compatibility-api/endpoints/create-message/

Reduce friction and gain better control over your message formatting by delivering long messages as a single MMS payload. Just another reason why SignalWire's programmable communications platform is better than duct-taping features together.

We're looking for users like you to join our User Testing Group! As a participant, you'll get early access to new features and have the opportunity to provide feedback that directly impacts the SignalWire platform experience.

Your insights = a better platform for everyone.
Want in? Sign Up Now!

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SignalWire’s Click-to-Call is a powerful new way to add real-time communication to your websites and applications with just a few lines of code.

What's New:

⚬ One-click WebRTC widget for instant voice and video calls

⚬ Zero custom development required - just embed and go

⚬ Full integration with your existing SignalWire resources

⚬ Works with PSTN, SIP, AI Agents, and custom workflows