AI assistants#Open source#Agents
Persona
A framework-agnostic, lightweight open-source AI chat UI library with native WebMCP client tool discovery and execution.
Product facts
Commercial Suite- Pricing
- Free / Open Source
- Data checked
- 2026-09-25
Capabilities
- Vanilla JS zero-framework dependency
- WebMCP client tool execution & discovery
- Shadow DOM strict CSS style isolation
- Resizable sidebar copilot & modal modes
Snapshot figures reflect the check date and may change over time.
Persona is an open-source, framework-agnostic AI chat UI library developed by Runtype.
Core Purpose
It allows developers to embed customizable chat interfaces and copilot sidebars into any static HTML or single-page application. With native WebMCP support, AI agents safely execute client-side tools with built-in user confirmation.
Key Scenarios
- Static Site Intelligence: Add context-aware assistants to documentation and marketing sites with a single script tag.
- In-App Copilot Workflows: Deliver resizable sidebars synchronized with live application state.