Conciseness

The body is lean with no explanations of concepts Claude already knows; the source-checkout paragraph is non-obvious operational detail that earns its place. It sits at anchor 4 rather than 5 because the three near-identical command blocks could be collapsed into one, and the dense environment paragraph could be tightened.

Actionability

The command blocks ("command ccb clear", "command ccb clear \"$AGENT\"", "command ccb clear agent1 agent2") are copy-paste ready and cover the common cases (all agents, one agent, multiple agents), and the Rules section gives precise behavioral guidance. This matches the anchor-5 fully-executable example; it is not 4 because no execution details are missing.

Workflow Clarity

"ccb clear targets all configured mounted agents" is a batch operation, and sending a provider-native /clear destructively drops conversation context. Per the rubric's cap ("a destructive or batch skill without validation cannot score above 3"), the absence of any pre-flight target check or validate-and-retry loop caps this at anchor 3 — 'After running the command, report the command output. Do not poll or wait' is reporting, not a validation checkpoint, and the skill's single action otherwise would have earned 5.

Progressive Disclosure

There are no bundle files, the body is under 50 lines, and it is organized into clear sections (intro, environment note, Commands, Rules). Per the rubric's simple-skill guideline, well-organized sections alone score 5 with no external references needed.

Specificity

The description states a concrete action ("Clear CCB managed agent conversation context"), the tool ("with `ccb clear`"), scope ("one or more CCB agent contexts"), and a boundary ("without restarting or deleting project state"). It falls at anchor 4 (several specifics, minor gaps) rather than 3 because coverage of what/tool/scope/constraint is complete for this single-purpose skill, and not 5 because a clear-focused skill cannot list multiple distinct actions.

Completeness

Both parts are explicit: the 'what' is "Clear CCB managed agent conversation context with `ccb clear`" and the 'when' is a concrete "Use when..." clause with specific trigger phrases. This matches the anchor-5 example structure exactly, and is clearly above anchor 4 ('when' could be more explicit).

Trigger Term Quality

It includes natural synonyms ("clear/reset"), both command trigger spellings ("$ccb-clear", "$ccb_clear"), and the phrase users would naturally say ("asks to clear/reset one or more CCB agent contexts"). Not anchor 5 because a few plausible user phrasings (e.g., 'wipe', 'fresh conversation', 'start over') are missing.

Distinctiveness Conflict Risk

The triggers are scoped to the CCB niche (dollar-prefixed command forms and 'CCB agent contexts'), making accidental firing for a generic conversation-reset skill unlikely. Clear niche with distinct triggers, matching anchor 5 rather than 4 (which implies residual overlap risk).