AWS shows MCP Apps running on Bedrock AgentCore, putting interactive HTML widgets inside ChatGPT and Claude from one server

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An AWS machine-learning blog post dated 2026-09-11 walks through deploying an MCP App with interactive HTML widgets on Bedrock AgentCore: AgentCore Runtime provides the serverless, session-isolated MCP host and AgentCore Gateway exposes it behind one secure endpoint that any MCP Apps-compatible host can reach. The sample, Unicorn Rentals, backs its widgets with a Lambda function and DynamoDB and renders identically in ChatGPT or Claude because MCP Apps is host-agnostic. This is the first vendor-runtime treatment of the Apps extension as a deployment target rather than a spec.