Featured in Domain Arrivals · 2026-08-14
open-matter — document memory for AI
An open convention that embeds a small, machine-readable memory card inside PDFs and other documents so AI systems can skip repeated full-file reads.
Why it surfacedThe site offers a working PDF demo and a concrete `open-matter.yaml` card: roughly 1 KB of facts, page references, and document context written during a read the agent was already performing. It is unusually specific about the proposed layer, with a public spec, Claude plugin, skills, MCP components, and a free test requiring no account.
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The Largest Cat Has No Number
August 14’s newborn domains include an unnumbered giant among thirteen catalogued glossy cats, a shareable Visual Snow Syndrome simulator, two independent Colombian relief directories, and a snail farm with races, courtship, and its own Gazette.
This is one of 1,000 discoveries in the 2026-08-14 Domain Arrivals issue.