creating-skillslisted

# Creating Skills Own the full lifecycle of a Claude Code or Codex plugin skill: scaffold, iterate, pressure-test, optimize description, or extract from session. This skill is **discovery-first**: it probes the current repo's marketplace shape before doing anything, then adapts to the conventions it finds (paths, author, license, test layout, version-tracking sites). Hardcoded values are out; everything that varies between marketplaces is resolved at runtime. --- ## Stage 0: Convention probes Run these probes the first time the skill is invoked in a run, regardless of mode. Stash results in `/tmp/<plugin>-creating-skills/conventions.json` and reuse for the rest of the run. ### Variable table These handlebars variables are referenced throughout the SKILL.md body and the reference docs. Each is filled in from a probe. | Variable | Source probe | Example | |---|---|---| | `{{marketplace_claude_path}}` | Probe 1 | `.claude-plugin/marketplace.json` or absent | | `{{marketplace_codex_path}}` | Probe 1 | `.agents/plugins/marketplace.json` or absent | | `{{plugin_dir}}` | Probe 2 | `plugins/`, `.claude/plugins/`, etc. | | `{{author}}` | Probe 3 | Whatever existing manifests use | | `{{license}}` | Probe 3 | Whatever existing manifests use (often `MIT`) | | `{{test_unit_dir}}` | Probe 4 | `tests/unit/` or absent | | `{{test_triggering_dir}}` | Probe 4 | `tests/skill-triggering/` or absent | | `{{test_integration_dir}}` | Probe 4 | `tests/integration/` or absent | | `{{frontmatt