Repository layout
Each skill has one directory under skills/. Root manifests package the collection, and apps/docs contains the public guide. Keep reusable skill instructions in the skill directory.
Collection files include skill-catalog.json, scripts/skill-catalog.mjs, the plugin manifests, and apps/docs/. Canonical skill directories are:
skills/├── phone-size/├── sams-tree/├── sams-status/├── sams-env/├── andrej-explain/├── migrate-cgpt/├── sales-research/├── sams-gen-writing/├── sams-skill-creator/├── sam-ux-audit/├── zach-prompting/└── htma-measure/Progressive disclosure
Section titled “Progressive disclosure”Level 1: discovery metadata
Section titled “Level 1: discovery metadata”Agents read the name and description in SKILL.md to decide whether the skill applies.
Level 2: core workflow
Section titled “Level 2: core workflow”When activated, the agent reads SKILL.md. It contains the sequence, output contract, stop conditions, and verification gate.
Level 3: conditional resources
Section titled “Level 3: conditional resources”The agent reads only the resource needed for the current step. For example:
method-map.mdselects the smallest useful measurement technique;local-paid-quote-adjustment.mdhandles local/community paid-price scenarios;output-rubric.mdvalidates the final memo; andmeasurement-brief-template.mdprovides the memo template;README.mdgives humans a concise use-case and installation guide; andvendor-guidance.mdprovides conditional GPT-6 Astra, Sol, Luna, and Claude Fable 5 guidance.
Distribution manifests
Section titled “Distribution manifests”.agents/plugins/marketplace.jsonexposes the repository to Codex’s plugin marketplace..codex-plugin/plugin.jsondeclares the Codex plugin and version..claude-plugin/marketplace.jsonexposes the same repository as a Claude marketplace..claude-plugin/plugin.jsonpoints Claude to the canonicalskills/directory.plugin.jsonsupplies portable root metadata.
The distribution manifests reference the skill directories without duplicating their content.
Sam’s Tree owns the shared tree-format reference. Sam’s Status bundles an identical copy so either skill installs independently. Both include synthetic evaluation requests and optional Codex UI metadata.