MCP-B
Browser-based agent platform with WebMCP integration for internal tools.
About MCP-B
MCP-B is a company that maintains the reference implementation of the W3C WebMCP standard and builds tools for deploying browser-based agents. The platform enables websites to publish tools that AI agents can call, maintaining the browser's existing authentication and user interface. MCP-B offers the Char agent platform (currently in alpha), which allows organizations to deploy personalized company agents directly in the browser. The company also provides consulting services for organizations deploying browser-based agents. A key distinctive feature is that MCP-B lets agents work with internal tools using the SSO and identity infrastructure already in place, avoiding the need for duplicate authentication systems.
At a glance
- Company
- MCP-B
- Platforms
- Web, Browser
- API
- Available
- Integrations
- React, NPM packages
- Last verified
- June 2026
Who It's For
- •Enterprise organizations deploying AI agents
- •Development teams building internal agent systems
- •Companies with complex authentication/SSO requirements
- •DevOps and platform engineering teams
- •Organizations deploying large-scale agent infrastructure
How It Works
- 1Websites publish tools conforming to the W3C WebMCP standard
- 2AI agents discover and call these published tools
- 3The Char platform integrates internal agents with browser interfaces
- 4WebMCP maintains browser context including existing authentication and UI
- 5React components wrap frontend logic as WebMCP tools for agent interaction
How to Use MCP-B
- 1Clone the Char extension template to start with a working extension shell
- 2Connect your internal agent to the template
- 3Add WebMCP tools to frontend apps using @mcp-b/react-webmcp library
- 4Deploy the browser extension for testing with your team's authentication
- 5Use coding agents to build and test tools in the real browser environment
- 6Contact MCP-B for WebMCP integration assistance or Char alpha access
Key Features
- •Char extension template for quick browser agent deployment
- •WebMCP standard implementation and packages
- •React-based WebMCP tools integration (@mcp-b/react-webmcp)
- •Browser context preservation (authentication, UI, SSO)
- •Char Alpha personalized company agent platform
- •Consulting services for agent deployment
Use Cases
- •Deploying personalized company agents within enterprise applications
- •Integrating AI agents into existing internal tools without changing authentication
- •Building browser-based agent interfaces for large organizations
- •Testing AI agents in production browser environments with real SSO
- •Creating agent-accessible frontend tools for internal company systems
Pros & Cons
Advantages
- •Preserves existing authentication and SSO, eliminating duplicate login systems and security complications
- •Uses standard W3C WebMCP protocol, ensuring interoperability and avoiding vendor lock-in
- •Already deployed in production at world's largest companies, demonstrating proven reliability
- •Provides both platform (Char) and consulting services for comprehensive deployment support
Disadvantages
- •Char platform is currently in alpha stage, suggesting potential instability or incomplete features
- •Limited public documentation about specific capabilities and limitations on the website
- •Requires custom development and integration effort compared to off-the-shelf solutions
Alternatives
See all MCP-B alternatives →Related Tools
View All Tools
Firecrawl
API platform for AI agents to search, scrape, and interact with web data.
PaioClaw
Secure, managed OpenClaw AI assistant setup in 60 seconds with 2000+ skills.
AssemblyAI
Convert audio and video into text and understand it.
Automorphic
Infrastructure platform for building self-improving custom language models.
Cohere
Enterprise AI platform for natural language processing models.
Datature
End-to-end computer vision AI platform for data labeling, model training, and deployment.
Reviews for MCP-B
Based on 0 reviews
Rating Distribution
No Reviews Yet
Be the first to share your experience with MCP-B!
Frequently Asked Questions
What is MCP-B?
MCP-B is a company that maintains the reference implementation of the W3C WebMCP standard and builds tools for deploying browser-based agents. The platform enables websites to publish tools that AI agents can call, maintaining the browser's existing authentication and user interface.
How much does MCP-B cost?
MCP-B uses custom pricing — contact the vendor for a quote.
Is MCP-B free?
MCP-B is a paid tool and does not offer a free plan.
What are the best MCP-B alternatives?
Popular MCP-B alternatives include Dify AI, FlowiseAI, Camel AGI.
What is MCP-B used for?
MCP-B is commonly used for Deploying personalized company agents within enterprise applications, Integrating AI agents into existing internal tools without changing authentication, Building browser-based agent interfaces for large organizations.
Does MCP-B have an API?
Yes, MCP-B offers an API for developers.
What platforms does MCP-B support?
MCP-B is available on Web, Browser.
Information Accuracy
Please note: While we regularly update all tool information including descriptions, features, pricing, and other details, this information may change over time as tools evolve and update their offerings. For the most current and accurate information, we recommend visiting the official website directly. Our goal is to provide you with comprehensive and up-to-date information to help you make informed decisions.