Use when you need to read a large body of code or text fast and cheaply — whole subsystems, sprawling logs, many files — by fanning the work out across parallel glm-code-crawler shards via cc-proxy and merging the digests. You orchestrate the shards; the agent reads one shard each. Requires cc-proxy running. Give it the paths/globs and the crawl question.
Use when a spec or plan has just been written or when the user asks for a second-eyes review of one — convenes a panel of N parallel GLM reviewers, each through a distinct lens, then synthesizes their findings into one scored report. Triggered by the cc-agents PostToolUse hook after a *-design.md (under specs/) or *-plan.md write, or invoked directly. Requires cc-proxy running.