Power & Performance with asc

Download performance metrics and diagnostic logs to monitor app performance indicators — launch time, hang rate, disk writes, memory use, battery life, termination, and animation hitches.

Authentication

asc auth login --key-id <id> --issuer-id <id> --private-key-path ~/.asc/AuthKey.p8

How to Navigate (CAEOAS Affordances)

Every JSON response contains an "affordances" field with ready-to-run commands — IDs already filled in. Follow the affordances to drill down from metrics to diagnostics to logs.

App metrics → Diagnostics → Logs flow:

// 1. asc perf-metrics list --app-id app-1 → shows performance overview
{