What changed, and what it means for the things in this catalogue.
Skills and MCP servers sit on top of specifications that move. This is where those changes get written down — what happened, who it affects, and what you can actually do about it. Every factual claim is traced to a primary source, and every piece records the date those sources were last read.
Protocol1Agent Skills1Ecosystem1
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MCP dropped its handshake. Every server in this catalogue is affected.The 2026-07-28 specification makes the Model Context Protocol stateless, retires the initialize exchange, and starts a twelve-month clock on Roots, Sampling and Logging.Read it →More from the Brief
A skill is a folder with a Markdown file in it. That is the whole format.Agent Skills were published as an open standard for cross-platform portability. The format is deliberately small, and that is what makes a catalogue of them possible.2 sourcesThe MCP registry verifies who published a server. It does not review what they published.The official registry authenticates namespaces through GitHub, DNS or HTTP — and says in its own documentation that security scanning is somebody else’s job.2 sources
The Brief is deliberately short. A piece is published when there is something specific to say about a change and a primary source that establishes it — not on a schedule.