The compatibility map is re-read quarterly, and the specification is re-read whenever an entry here says it moved. A date on this page means somebody re-read a source, not that a build ran.
Compatibility map published with 14 relationships
First publication: 4 conflicts and 10 pairings across 30 skills from 4 publishers, each recorded after reading both skills at the source.
SKILL.md reference checked against the current specification
All six frontmatter fields, the directory layout and the loading stages were read from the published specification. Note that it moved: the spec folder in anthropics/skills now points at agentskills.io.