Verse Authoring Skill — canonical source

The full agent-facing skill (8 compile-verified rules for writing UEFN Verse that compiles, ranked by real failure data from 1,418 compiles) lives canonically on GitHub:

→ https://github.com/BizaNator/VerseIsland/blob/main/skills/verse-authoring/SKILL.md (raw, agent-loadable: https://raw.githubusercontent.com/BizaNator/VerseIsland/main/skills/verse-authoring/SKILL.md)

The 30-second version — nearly 3 in 4 (73%) of failures come from just three mistakes:

Add the using block first (34% of failures) — trigger_device, agent, @editable all live in modules you must import.
Device text takes a message, not a string (31%) — use the <localizes> pattern.
Get the file shape right (25%) — # comments, logic inside methods, no invented keywords.

Human version with full explanations: https://verseisland.com/guides/writing-verse-that-compiles

(This file is a pointer so there is exactly one source of truth — CC BY 4.0, Verse Island / Biloxi Studios.)