Conciseness

The body is efficient — exact CLI examples, a cron mapping table, and a fill-in prompt template with no padding or explanations of concepts Claude already knows. However, the interval options are presented twice (the Step 2 selection menu and the interval-to-cron table) and the 3-day auto-expiry is stated in both the Step 5 confirmation block and the Important Limitations section, so minor trimming is possible.

Actionability

Guidance is mostly executable: exact invocations, cron expressions, a complete fill-in cron prompt template, a loop.json schema, and a literal confirmation message. It falls short of fully copy-paste ready because the prompt references 'python {skill_path}/scripts/run_experiment.py' while no scripts/ directory exists in this skill bundle, leaving that command unverifiable.

Workflow Clarity

The start sequence (resolve experiment → select interval → CronCreate → store loop.json → confirm) and the stop workflow are clearly ordered, and the recurring prompt contains real feedback loops ('Read the output (KEEP/DISCARD/CRASH)', 'If 5 consecutive crashes in results.tsv, delete this cron job (CronDelete) and alert'). It stops short of 5 because there is no pre-flight check that the experiment's config.cfg/program.md exist before scheduling, and no verification that CronCreate succeeded before writing loop.json.

Progressive Disclosure

The file is well-organized with clear section headers (Usage, What It Does, Stopping a Loop, Important Limitations) and content appropriately sized for a single file. It misses a 5 because the one external path it references — {skill_path}/scripts/run_experiment.py — has no corresponding file in the bundle, and the related /ar:ar-status command is mentioned without any pointer to its location.

Specificity

The description names concrete actions ('Start an autonomous experiment loop', 'Uses CronCreate for scheduling') and enumerates the supported intervals ('10min, 1h, daily, weekly, monthly'), but omits other capabilities of the skill such as stopping a loop and checking status, so coverage has minor gaps rather than being comprehensive.

Completeness

It explicitly answers both questions: what ('Start an autonomous experiment loop with user-selected interval... Uses CronCreate for scheduling') and when, with concrete trigger phrases ('Use when the user runs /ar:loop or asks to run an autoresearch experiment continuously on a schedule'). The 'when' clause is specific and explicit, so the anchor-4 case of a vague 'when' does not apply.

Trigger Term Quality

Natural trigger phrases are present ('/ar:loop', 'run an autoresearch experiment continuously', 'on a schedule', 'loop', 'daily', 'weekly', 'monthly'), matching the 'good keyword coverage' anchor; a few natural synonyms users might say ('recurring', 'repeat', 'cron', 'schedule an experiment') are missing, preventing a 5.

Distinctiveness Conflict Risk

The description occupies a clear niche — autoresearch experiment looping triggered by '/ar:loop' or 'run an autoresearch experiment continuously on a schedule' — with essentially no overlap risk against generic scheduling or document skills.