Target
A named operation (build, test, ...) you invoke with magus run <target>; it may compose a spell's tool-native operations and depend on other targets. Target in full.
Op
A single tool-native command a target composes (long form: operation); the middle of the work hierarchy (Spell to Op to Target). Op in full.
Cache
The content-addressed store magus consults before running a target, so unchanged work is skipped. Cache in full.
Pool
The concurrency pool: the shared set of slots that caps how many targets run in parallel on one machine. Its capacity defaults to MAGUS_CONCURRENCY, then 4 on GitHub-hosted runners, then min(NumCPU, 8); magus status and the dashboard report it live. Pool in full.
Latency
How long an operation takes. magus records latency as OpenTelemetry histograms per family (target execution, cache op, pool wait, and graph query) and reports each as a count, sum, and percentiles. Latency in full.
Percentile
A latency value at a given rank, interpolated from a histogram's buckets: p50 is the median, p95 and p99 are the tail that most latency budgets care about. Percentile in full.
Health
The at-a-glance daemon state derived from the pool: healthy when the pool is reporting, degraded when it reports an error, down when there is no pool. The dashboard color-codes each state. Health in full.
Knowledge graph
The queryable graph of a workspace's spells, targets, docs, and code relationships; query it with magus query/explain/path. Knowledge graph in full.