Individual skill
purpose-properties
Derive the binding properties your why/how/what impose on everything below them, so no solution can silently contradict your own product definition. Retrofit entry point for projects that started before v0.120.0; also the re-derive path when why/how/what change and every stance below them goes stale.
plugins/mycelium/skills/purpose-properties/SKILL.md
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- Last checked
- Nov 6, 2026
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- Repository last updated
- Nov 6, 2026
- License
- MIT
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- claude-code Repository topic
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- product-development Repository topic
- product-management Repository topic
- claude-code-skills Repository topic
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# Purpose Properties Skill
Retrofit and re-derive entry point for `purpose.yml#purpose_properties`. **For new projects this runs
inside `/mycelium:start` Step 3b.** Use this skill when:
- The project existed before **v0.120.0** and has no `purpose_properties` (the retrofit case — every
project created before that release, since `/mycelium:start` Step 4 exits for already-initialized
projects and never reaches the extraction).
- `why`, `how` or `what` changed, so `derived_from_hash` no longer matches and **every stance below
it is superseded** (the drift case — this is the one that matters most and the easiest to skip).
- A property list exists but the user wants to revisit which properties are `binding`.
Full contract: https://github.com/haabe/mycelium/blob/main/docs/purpose-stance.md (it lives in the repository, not in the installed plugin).
