Build AI Agents | SignalWire

Build sophisticated voice AI agents using the SignalWire SDK. This section covers advanced features that transform simple voice agents into production-ready conversational applications capable of handling complex business processes.

Advanced Topics

Contexts and Workflows

Build multi-step conversation flows with branching logic, step validation, and context switching.

State Management

Manage data throughout call sessions using global_data, metadata, and post_prompt.

Record calls

Record calls with stereo/mono options, multiple formats, and webhook notifications.

Call Transfer

Transfer calls to phone numbers, SIP endpoints, or other AI agents.

Multi-Agent Servers

Run multiple agents on a single server with path-based and SIP routing.

Search and Knowledge

Add RAG-style knowledge search using local vector indexes or PostgreSQL with pgvector.

MCP Gateway

Bridge Model Context Protocol servers with SignalWire AI agents for tool integration.

Prefab Agents

Pre-built agent archetypes for common use cases. Use them directly or extend them.

InfoGatherer

Collect answers to a series of questions with confirmation and dynamic question support.

FAQBot

Answer frequently asked questions from a provided knowledge base.

Survey

Conduct automated surveys with rating, multiple choice, yes/no, and open-ended questions.

Receptionist

Greet callers, collect information, and transfer to the appropriate department.

Concierge

Provide venue information, amenity details, and booking assistance.