Model Context Protocol Blog
2026
- 5 min read
The Official Ruby SDK for MCP Reaches Tier 1
The official Ruby SDK for the Model Context Protocol is now a Tier 1 SDK under the MCP SDK tiering system, with full support for the 2026-07-28 MCP specification and a 100% conformance pass rate across both scored spec versions.
- 6 min read
The New MCP Roadmap
An update on the Model Context Protocol roadmap and focus areas for upcoming specification releases.
- 12 min read
The 2026-07-28 Specification
The 2026-07-28 Model Context Protocol specification is out, bringing a stateless protocol core, Multi Round-Trip Requests, header-based routing, cacheable list results, authorization hardening, a formal extensions framework, and updated Tier 1 SDKs.
- 2 min read
The Official Ruby SDK for MCP Reaches 1.0
The official Ruby SDK for the Model Context Protocol has reached version 1.0 with a stable public API and a 100% conformance pass rate. The SDK now meets every Tier 2 requirement of the MCP SDK tiering system, and development toward Tier 1 continues.
- 9 min read
Beta SDKs for the 2026-07-28 MCP Spec Release Candidate Are Here
Beta releases of the Python, TypeScript, Go, and C# SDKs are now available with support for the 2026-07-28 MCP specification release candidate. Here is what changes for your server, how to migrate, and how to test before the spec goes final on July 28.
- 5 min read
Enterprise-Managed Authorization: Zero-touch OAuth for MCP
The Enterprise-Managed Authorization extension to the Model Context Protocol is now stable, enabling organizations to centrally provision MCP server access through their identity provider so users get connected servers on first login without per-app OAuth.
- 9 min read
The 2026-07-28 MCP Specification Release Candidate
The release candidate for the next Model Context Protocol (MCP) specification is now available: a stateless protocol core, the Extensions framework, Tasks, MCP Apps, authorization hardening, and a formal deprecation policy.
- 3 min read
Expanding the MCP Maintainer Team
Updates to the Model Context Protocol (MCP) governance team: a new Lead Maintainer and an addition to the Core Maintainer group as the open-source project continues to grow.
- 11 min read
Tool Annotations as Risk Vocabulary: What Hints Can and Can't Do
MCP tool annotations were introduced nearly a year ago as a way for servers to describe the behavior of their tools — whether they’re read-only, destructive, idempotent, or reach outside their local...
- 5 min read
Understanding MCP Extensions
A practical guide to MCP extensions: how they layer new capabilities on top of the core protocol, and patterns the community is already using.
- 6 min read
The 2026 MCP Roadmap
The updated Model Context Protocol roadmap for 2026: transport scalability, agent communication, governance maturation, and enterprise readiness, plus guidance on SEP prioritization and how to get involved.
- 9 min read
MCP Apps - Bringing UI Capabilities To MCP Clients
MCP Apps is now live as the first official MCP extension — tools can return interactive UI components that render directly in the conversation.
- 4 min read
January MCP Core Maintainer Update
Core Maintainer team changes for 2026: departing members, new additions, and what's ahead for MCP governance.
2025
- 7 min read
Exploring the Future of MCP Transports
The Transport Working Group's plan to evolve MCP beyond Streamable HTTP for enterprise-scale remote deployments.
- 2 min read
MCP joins the Agentic AI Foundation
Anthropic is donating MCP to the newly formed Agentic AI Foundation under the Linux Foundation, ensuring vendor-neutral governance for the protocol's future.
- 3 min read
SEPs Are Moving to Pull Requests
SEPs are moving from GitHub Issues to pull requests against the seps/ directory — why, and what changes for contributors.
- 21 min read
One Year of MCP: November 2025 Spec Release
MCP turns one — a look back at the year, plus the full details of the November 2025 specification release.
- 5 min read
MCP Apps: Extending servers with interactive user interfaces
Introducing the MCP Apps Extension proposal (SEP-1865) to standardize interactive user interfaces in MCP, developed with the MCP-UI creators and maintainers from OpenAI and Anthropic.
- 3 min read
Adopting the MCP Bundle format (.mcpb) for portable local servers
The MCP Bundle format (.mcpb) joins the MCP project, enabling one-click installation of local servers across any compatible client.
- 9 min read
Server Instructions: Giving LLMs a user manual for your server
How server instructions give LLMs the context they need to use your MCP server's tools effectively — an underused protocol feature with outsized impact.
- 6 min read
Update on the Next MCP Protocol Release
An update on the timeline and priorities for the next Model Context Protocol specification version
- 4 min read
Introducing the MCP Registry
Launching the MCP Registry in preview: an open catalog and API for discovering publicly available MCP servers.
- 1 min read
Announcing the Official PHP SDK for MCP
The official PHP SDK for the Model Context Protocol is now generally available, built in collaboration with the PHP Foundation and Symfony.
- 10 min read
Evolving OAuth Client Registration in the Model Context Protocol
The Model Context Protocol (MCP) has adopted OAuth 2.1 as the foundation for its authorization framework. A key part of the authorization flow that MCP is particularly reliant on is client...
- 8 min read
MCP Prompts: Building Workflow Automation
A practical guide to building workflow automation with MCP prompts and resource templates, demonstrated through a meal planning example.
- 4 min read
Building to Last: A New Governance Model for MCP
Introducing MCP's formal governance model: Specification Enhancement Proposals (SEPs), a maintainer structure, and a community-driven process for evolving the protocol.
- 1 min read
The Model Context Protocol Blog
The official Model Context Protocol blog — updates, tutorials, and insights from maintainers and contributors.