# MCP News - MCP Ecosystem Facts & News
#
# Entities: 3  (2 servers, 1 clients)
# Spec revisions tracked: 5  (current: 2026-07-28)
# News stories: 36  Concepts: 4
#
# Each page is also available as raw markdown at <url>.md
# Catalog pages also honor `Accept: text/markdown` (or `?format=md`) and rewrite to the .md sibling.
#

## Reference

- https://mcp-news.com/AGENTS.md           - Data model + provenance/confidence spec
- https://mcp-news.com/mcp                 - Read-only MCP server (JSON-RPC: search_catalog, get_server, list_servers, get_client, list_clients, get_spec_revision, list_spec_revisions, list_news, get_mcp_500)
- https://mcp-news.com/mcp-500.md          - The MCP 500: servers ranked by Adoption Index
- https://mcp-news.com/adoption-index.md   - Adoption Index methodology (versioned)
- https://mcp-news.com/metrics.md          - Raw Adoption Index snapshots
- https://mcp-news.com/llms-full.txt       - Full grounding feed (every entity, spec status, sources)
- https://mcp-news.com/index.md            - Full catalog (raw markdown)
- https://mcp-news.com/servers.md          - Server index (raw markdown)
- https://mcp-news.com/clients.md          - Client index (raw markdown)
- https://mcp-news.com/publishers.md       - Publisher index (raw markdown)
- https://mcp-news.com/spec.md             - Spec revision index (raw markdown)
- https://mcp-news.com/support.md          - Spec-support records (raw markdown)
- https://mcp-news.com/categories.md       - Category index (raw markdown)
- https://mcp-news.com/news.md             - MCP ecosystem news (raw markdown)
- https://mcp-news.com/concepts.md         - MCP concept reference (raw markdown)
- https://mcp-news.com/sitemap.xml         - XML sitemap

## Hubs

- https://mcp-news.com/tracker  (3 entities, 2 verified current)  - MCP 2026-07-28 adoption tracker
  Markdown: https://mcp-news.com/tracker.md
- https://mcp-news.com/first-party  (2 servers)  - Verified first-party MCP servers
  Markdown: https://mcp-news.com/first-party.md
- https://mcp-news.com/mcp-500  - The MCP 500: servers ranked by Adoption Index
  Markdown: https://mcp-news.com/mcp-500.md

## Catalog

- /clients/claude-desktop
  Claude Desktop [client] [UNVERIFIED]
  Anthropic's desktop client for Claude and the first shipping MCP client: local MCP server support launched with the protocol itself in November 2024, and remote MCP connectors are documented on paid plans. Feature-level support and current spec-revision support are not yet verified against a probe or a revision-specific vendor statement.

- /servers/github-mcp-server
  GitHub MCP Server [server] [CURRENT SPEC]
  GitHub's first-party MCP server: a GitHub-hosted remote endpoint at api.githubcopilot.com/mcp/ (OAuth, or a personal access token) plus a local Docker distribution over stdio. Toolsets cover repositories, issues, pull requests, and code analysis. Supports the stateless 2026-07-28 revision, shipped ahead of the revision's release on the official Go SDK.

- /servers/vercel-mcp
  Vercel MCP [server] [CURRENT SPEC]
  Vercel's first-party hosted MCP server: docs search, project and deployment management, log analysis, and Web Analytics queries. Serves the stateless 2026-07-28 revision and 2025-era clients from the same endpoint, with OAuth authorization.

## Spec revisions

- /spec/2026-07-28  [CURRENT]  released 2026-07-28
  The largest revision since the protocol launched: the core becomes stateless (the initialize handshake and protocol-level sessions are removed), server/discover is introduced, Multi Round-Trip Requests replace server-initiated requests, routing headers and cacheable list results land, and a formal extensions framework and 12-month deprecation policy are adopted.

- /spec/2025-11-25  [SUPERSEDED]  released 2025-11-25
  Added OpenID Connect discovery, icons metadata, incremental scope consent, URL mode elicitation, tool calling in sampling, Client ID Metadata Documents as a recommended registration mechanism, and experimental tasks.

- /spec/2025-06-18  [SUPERSEDED]  released 2025-06-18
  Removed JSON-RPC batching, added structured tool output and elicitation, classified MCP servers as OAuth resource servers, and required RFC 8707 resource indicators plus the MCP-Protocol-Version header on HTTP.

- /spec/2025-03-26  [SUPERSEDED]  released 2025-03-26
  Added the OAuth 2.1 authorization framework, replaced the original HTTP+SSE transport with Streamable HTTP, and added JSON-RPC batching and tool annotations.

- /spec/2024-11-05  [SUPERSEDED]  released 2024-11-05
  The initial release of the Model Context Protocol specification: JSON-RPC 2.0 messages over stateful connections with capability negotiation, server features (resources, prompts, tools), the client sampling feature, and utilities for progress, cancellation, and logging.