Persona

Persona

Runtype
+
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About

OpenHarness is an open-source TypeScript SDK for developers building custom AI-agent applications, including coding agents, CLI tools, and web-based assistants. It provides stateless agent execution, explicit conversation-state handling, streaming events, composable middleware for retries, persistence and context compaction, hierarchical subagents, and permission-controlled tools. Developers can connect model providers through the Vercel AI SDK, add external capabilities through Model Context Protocol (MCP), and use filesystem or shell tools through configurable providers. The SDK also offers React hooks and Vue composables for streaming agent output into application interfaces. OpenHarness is installed as an npm package and is intended to be embedded in projects running on Node.js or edge runtimes; it is a developer library rather than a hosted end-user agent service.

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 Not 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

Software developers and engineering teams building custom AI-agent applications, including coding agents, CLI tools, and web assistants.

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 Not 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

No images available

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

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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

OpenHarness
open-harness.dev/

Company Information

Runtype
United States
www.persona-chat.dev/

Alternatives

Deep Agents

Deep Agents

LangChain

Alternatives

Mastra

Mastra

Mastra AI
Mastra

Mastra

Mastra AI
eve

eve

Vercel
Deep Agents

Deep Agents

LangChain

Categories

Categories

Integrations

OpenAI Supported
Anthropic Supported
CSS Not Supported
Cloudflare Not Supported
Eve Not Supported
JavaScript Not Supported
LangChain Not Supported
Model Context Protocol (MCP) Supported
Next.js Not Supported
Svelte Not Supported
Vercel Not Supported
Vercel AI SDK Supported
WebMCP Not Supported

Integrations

OpenAI Supported
Anthropic Not Supported
CSS Supported
Cloudflare Supported
Eve Supported
JavaScript Supported
LangChain Supported
Model Context Protocol (MCP) Not Supported
Next.js Supported
Svelte Supported
Vercel Supported
Vercel AI SDK Not Supported
WebMCP Supported
Claim OpenHarness and update features and information
Claim OpenHarness and update features and information
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Claim Persona and update features and information