Conciseness

The body is two lean lines — a provenance comment and "Load and follow the shared skill at `~/.agents/skills/boris/SKILL.md`" — with zero padding, no explanation of concepts Claude already knows, and every token earning its place. This matches the anchor 5 'Lean and efficient; assumes Claude's competence' example.

Actionability

The single instruction is concrete — an exact, unambiguous file path to load — but the actual guidance (the Codex workflow tips themselves) is entirely absent from the body, leaving only a pointer with all key details in an external file. This fits anchor 3's 'concrete guidance but incomplete; missing key details' better than anchor 4, which expects mostly complete executable guidance.

Workflow Clarity

As a single-purpose skill, its one action (load and follow the shared skill) is unambiguous, which per the simple-skill guideline supports a high score. It falls short of 5 because the workflow depends wholly on an external file with no verification step or fallback if the path is absent — a minor validation gap matching anchor 4.

Progressive Disclosure

The reference to `~/.agents/skills/boris/SKILL.md` is one level deep and clearly signaled, but the entire skill content lives outside the bundle (no references/, scripts/, or assets/ directories exist), so nothing is placed within the skill itself. That is a larger organization gap than anchor 4's 'minor organization gaps', fitting anchor 3's 'could be better organized' despite the clearly signaled pointer.

Specificity

The description names the domain ("Codex workflow tips") and enumerates nine concrete topics ("parallel sessions, worktrees, plan mode, AGENTS.md, skills, subagents, hooks, MCP, permissions, and sandboxing"), but the only capability verb is the generic "tips" — it never states what the skill actually does with those topics. This sits between anchor 2 ("Names the domain but actions are minimal or generic") and anchor 3, and the broad topic list keeps it at 3 rather than 2.

Completeness

Both parts are present: the what ("Codex workflow tips from Boris Cherny and the Codex team") and an explicit when ("Use when setting up Codex or optimizing workflows: ...") with concrete trigger topics. It is not a 5 because the 'what' relies on the vague word 'tips' rather than concrete actions, fitting anchor 4's 'when' could be more explicit or specific' level rather than the fully concrete anchor 5 example.

Trigger Term Quality

"Use when setting up Codex or optimizing workflows" plus the topic list gives good natural keyword coverage ("parallel sessions", "worktrees", "plan mode", "AGENTS.md", "hooks", "MCP", "sandboxing") that users would plausibly say. It falls short of anchor 5 because common synonyms and variations (e.g., "Codex CLI", "configuring Codex", "codex setup") are missing.

Distinctiveness Conflict Risk

The niche is clear — "Boris Cherny and the Codex team", "AGENTS.md", "setting up Codex" — making it mostly distinct with minimal confusion against non-Codex skills. It is not a 5 because generic trigger terms like "skills", "subagents", "hooks", "MCP", and "permissions" overlap with general agent-workflow skills, matching anchor 4's 'minor overlap risk with closely related skills'.