Anthropic Brings MCP 2026-07-28 to Claude

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Anthropic announced the rollout of the fifth Model Context Protocol specification release, MCP 2026-07-28, across Claude products. The update introduces a stateless request/response core, standardises extensions like MCP Apps and Tasks, and hardens enterprise authorisation via OAuth 2.0 and OIDC.

Key points

  1. Stateless core: MCP transitions from a bidirectional stateful architecture to a request/response model, enabling deployment on serverless and edge infrastructure.
  2. Standardised extensions: MCP Apps (inline interactive UIs) and Tasks (long-running work) now ship under a formal, versioned extensions framework.
  3. Hardened authentication: Native alignment with standard OAuth 2.0 and OIDC deployments, simplifying integration with identity providers such as Okta and Entra.
  4. MCP Tunnels (research preview): Allows Claude to securely access internal MCP servers inside private networks without public endpoints or inbound firewall rules.
  5. Ecosystem scale: Anthropic reports over 400M monthly SDK downloads and more than 950 MCP servers available in Claude's connectors directory.

Why it matters

Adopting a stateless HTTP core removes session-management friction, enabling developers to scale MCP servers on modern cloud and serverless platforms while maintaining enterprise-grade identity controls.

Analysis

The 2026-07-28 spec addresses critical deployment friction points of earlier MCP iterations. Moving away from stateful connections allows MCP workloads to run on standard serverless architectures. Combined with enterprise-managed authentication, developer observability dashboards, and private network tunneling, Anthropic is consolidating MCP's position as the de facto integration standard for enterprise AI agents.

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Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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