Asc Crash Triage

asc crash triage

Use this skill to fetch, analyze, and summarize TestFlight crash reports, beta feedback, and performance diagnostics.

Workflow

• Resolve the app ID if not provided (use asc apps list).
• Fetch data with the appropriate command.
• Parse JSON output and present a human-readable summary.

TestFlight crash reports

List recent crashes (newest first):

• asc testflight crashes list --app "APP_ID" --sort -createdDate --limit 10
• Filter by build: asc testflight crashes list --app "APP_ID" --build "BUILD_ID" --sort -createdDate --limit 10
• Filter by device/OS: asc testflight crashes list --app "APP_ID" --device-model "iPhone16,2" --os-version "18.0"
• All crashes: asc testflight crashes list --app "APP_ID" --paginate
• Table view: asc testflight crashes list --app "APP_ID" --sort -createdDate --limit 10 --output table

TestFlight beta feedback

List recent feedback (newest first):

• asc testflight feedback list --app "APP_ID" --sort -createdDate --limit 10
• With screenshots: asc testflight feedback list --app "APP_ID" --sort -createdDate --limit 10 --include-screenshots
• Filter by build: asc testflight feedback list --app "APP_ID" --build "BUILD_ID" --sort -createdDate
• All feedback: asc testflight feedback list --app "APP_ID" --paginate

Performance diagnostics (hangs, disk writes, launches)

Requires a build ID. Resolve via asc builds info --app "APP_ID" --latest --platform IOS or asc builds list --app "APP_ID" --sort -uploadedDate --limit 5.

• List diagnostic signatures: asc performance diagnostics list --build "BUILD_ID"
• Filter by type: asc performance diagnostics list --build "BUILD_ID" --diagnostic-type "HANGS"
• Types: HANGS, DISK_WRITES, LAUNCHES
• View logs for a signature: asc performance diagnostics view --id "SIGNATURE_ID"
• Download all metrics: asc performance download --build "BUILD_ID" --output ./metrics.json

Resolving IDs

• App ID from name: asc apps list --name "AppName" or asc apps list --bundle-id "com.example.app"
• Latest build ID: asc builds info --app "APP_ID" --latest --platform IOS
• Recent builds: asc builds list --app "APP_ID" --sort -uploadedDate --limit 5
• Set default: export ASC_APP_ID="APP_ID"

Summary format

When presenting results, organize by severity and frequency:

• Total count — how many crashes/feedbacks in the result set.
• Top crash signatures — group by exception type or crash reason, ranked by count.
• Affected builds — which build versions are impacted.
• Device & OS breakdown — most affected device models and OS versions.
• Timeline — when crashes started or spiked.

For performance diagnostics, highlight the highest-weight signatures first.

Notes

• Default output is JSON; use --output table or --output markdown for quick human review.
• Use --paginate to fetch all pages when doing a full analysis.
• Use --pretty with JSON for debugging command output.
• Crash data from App Store Connect may have 24-48h delay.