The description mentions some actions like 'destroy expired resources', 'check ttl', 'remove old deployments', and 'periodic monitoring', but these are mostly embedded within trigger phrases rather than clearly stated as concrete capabilities. It lacks a structured 'what it does' section listing specific actions.

The 'when' is extremely well-covered with explicit trigger phrases, but the 'what' is weak — the description never clearly explains what the skill actually does beyond vague references to destroying expired ephemeral infrastructure resources. The description is essentially all triggers with minimal capability explanation.

The description provides extensive coverage of natural trigger terms users would say, including many variations like 'cleanup', 'infra cleanup', 'tear down', 'teardown infra', 'prune resources', 'decommission', 'destroy dev environment', etc. This is thorough and covers common phrasings.

The skill occupies a clear niche — ephemeral infrastructure TTL cleanup and resource destruction. The specific domain (infrastructure resources, TTL, ARN, ephemeral environments) and the highly specific trigger terms make it very unlikely to conflict with other skills.

The skill is fairly long (~250 lines) but most content is necessary for a complex multi-source, multi-tool workflow. However, there's some verbosity: the IaC destroy command table lists 12 tools when it could reference an external file, the /loop section repeats the 'never auto-destroy' point multiple times, and the error handling section is exhaustive but could be more concise. The prerequisites section explaining how to extract config fields is somewhat verbose but necessary for correctness.

The skill provides concrete, executable commands throughout: specific `gh issue list` commands with exact flags, `tofu destroy` with proper `-target` syntax, `gh issue close` commands, and clear table formats for resource presentation. The destroy commands table covers all supported IaC tools with exact CLI syntax. The TTL registry format is specified with a concrete markdown table example.

The 7-step workflow is clearly sequenced with explicit validation and safety checkpoints. Step 3 requires user confirmation before any destruction (with multiple options), Step 4 shows exact commands before execution, and Step 5 updates all tracking sources after success. Error handling covers partial failures, state locks, and already-destroyed resources with clear recovery paths. The feedback loop of 'destroy fails → report error → offer retry or skip → do NOT mark as destroyed' is explicitly stated.

The skill is a monolithic document with all content inline. The IaC destroy commands table, the TTL registry format, and the error handling section could be split into reference files. It does reference external files (experience-derivation.md, rollback-patterns.md, providers.md, environments.md) appropriately, but the skill body itself is quite long and would benefit from offloading the destroy command reference and error handling to separate files. No bundle files are provided to support progressive disclosure.