Persona

Persona

Runtype
+
+

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About

Write the backend and frontend of a feature in a single component and let the framework decide where the code should run. Nullstack provides you with all the tools you need to stay focused on the product. On the first render, you'll get SEO-ready HTML optimized for the first paint of your route in a single request using local functions with zero JavaScript dependencies in the client bundle. After the content is served and the network is idle Nullstack JavaScript is loaded, the state of the application is restored through hydration and it becomes a single-page application. Subsequent server functions will fetch JSON from an automatically generated microservice API, deserialize the response, update the application state, and rerender the page out of the box. A full stack lifecycle combined with a feature-driven mindset allows you to write clean and reusable code without the need to create APIs manually.

About

Persona is a VanillaJS Agent UI Library that helps developers create agentic front-end experiences for the web in pure JavaScript. Lightweight, extensible, and WebMCP-native, it runs on any stack and can connect to any SSE backend. Developers can start with a floating launcher in the corner, a copilot docked beside an app, or a full-height assistant that owns the page, changing the launcher configuration without changing the agent or app. Persona is designed for support, docs, sales, onboarding, internal tools, and custom agent experiences where the chat UI becomes another way to operate the application. Through WebMCP, developers can expose page actions, search, carts, bookings, forms, and other tools directly in the browser through a document.modelContext; Persona discovers those tools, asks the user before calling them, and streams the result back into the conversation.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers and professionals seeking a solution to improve the writing of backend and frontend projects

Audience

Developers and engineers who need a lightweight library to add agentic chat, tool use, streaming, and branded assistant interfaces to web apps

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

Nullstack
Founded: 2021
nullstack.app/

Company Information

Runtype
United States
www.persona-chat.dev/

Alternatives

Alternatives

SpreadJS

SpreadJS

GrapeCity
Jsuites

Jsuites

Jspreadsheet
Deep Agents

Deep Agents

LangChain
Wijmo

Wijmo

GrapeCity

Categories

Categories

Integrations

CSS Not Supported
Cloudflare Not Supported
Eve Not Supported
HTML Supported
JSON Supported
JavaScript Not Supported
LangChain Not Supported
Next.js Not Supported
OpenAI Not Supported
Svelte Not Supported
Vercel Not Supported
WebMCP Not Supported

Integrations

CSS Supported
Cloudflare Supported
Eve Supported
HTML Not Supported
JSON Not Supported
JavaScript Supported
LangChain Supported
Next.js Supported
OpenAI Supported
Svelte Supported
Vercel Supported
WebMCP Supported
Claim Nullstack and update features and information
Claim Nullstack and update features and information
Claim Persona and update features and information
Claim Persona and update features and information