# Rebuilding the web for agents — Liad Yosef, MCP Apps

## Executive summary

The talk outlines the transition to the 'agentic web,' arguing that traditional websites and browser tabs are becoming obsolete as primary interfaces. The core shift involves breaking down complex UIs into atomic components that can be composed by personal AI assistants. The speaker, a co-creator of the MCP Apps specification, details how MCP Apps allows servers to hand real UI interfaces back into a chat context, solving the 'last mile of interaction.' Furthermore, the talk introduces the need for a standardized discovery layer, proposing the use of `AI catalog.json` to make websites 'agent ready' and accessible to autonomous agents.

## Key takeaways

- MCP Apps Solves Last-Mile Interaction: MCP Apps allows providers to send UI chunks into chats, ensuring that services retain their brand identity and functionality rather than being reduced to text or databases. This solves the 'last mile' problem for agents, enabling complex interactions like booking hotels or viewing 3D models within a unified chat context.
- The Agentic Web Paradigm Shift: The web is shifting from being a collection of siloed websites (requiring multiple tabs and different UIs for the same intent) to being composed by personal assistants. Assistants become the primary entry point, making websites themselves less critical for task completion.
- Need for Agent-Specific Discovery: Traditional standards like `llms.txt` are insufficient because agents often ignore them, preferring to navigate to docs or homepages. The solution requires a standardized, machine-readable directory, such as the proposed `AI catalog.json`, to expose a website's MCP and API servers directly to agents.

## Technical details

- MCP Apps Specification: MCP Apps is an underlying specification that enables chat-based applications to receive and display UI chunks from external servers, allowing services to maintain their visual identity and functionality within a chat interface.
- Headless Architecture: The trend is moving toward 'headless' services (e.g., Salesforce, Cloudflow), where the core functionality and data are exposed via APIs, rather than relying solely on the visual UI. This is crucial for agent integration.
- Agentic Resource Discovery: To standardize how websites expose themselves to agents, the speaker proposes the `AI catalog.json` JSON format. This file allows agents to query a directory directly for a website's MCP server and API server endpoints, bypassing traditional web navigation.

## Practical implications

- Web developers must shift focus from perfecting the visual UI/UX to ensuring their services are 'agent ready' by exposing APIs and structured data.
- The integration of services into chat interfaces (via MCP Apps) is the key to maintaining brand identity and user trust in the agentic web.
- The future of web interaction relies on personal assistants acting as the single, unified gateway to multiple services, making direct website browsing less necessary.

## Topics

Agentic Web, UI/UX Design for AI, API Standardization, Web Protocols, Conversational AI, MCP Apps, Aura AI, Aura Journey, AI catalog.json

Source: https://www.youtube.com/watch?v=waI44NP1abk