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asc-crash-triage

asc-crash-triage is a skill for Claude Code from kumaran-is/claude-code-onboarding. It costs 116 tokens per session (1,331 once invoked), scanned A, original, MIT.

A troubleshooting guide for investigating TestFlight crashes, tester feedback, and app performance reports in App Store Connect. TestFlight is Apple's beta-testing service, and its reports can include device, operating-system, and build details.

In plain words
What is it for?
Use it to summarize crashes, filter reports by build or device, review tester feedback, and inspect issues such as app hangs, slow launches, or excessive disk writes.
Why use it?
It organizes delayed and build-specific diagnostic data so teams can identify recurring failures and affected users.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

not rated 35repo 2mo ago A scan 116 tokens original MIT

Good fit Use it to summarize crashes, filter reports by build or device, review tester feedback, and inspect issues such as app hangs, slow launches, or excessive disk writes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kumaran-is/claude-code-onboarding/asc-crash-triage
View source ↗ kumaran-is/claude-code-onboarding
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add kumaran-is/claude-code-onboarding --skill asc-crash-triage
Clone the repo
git clone --depth 1 https://github.com/kumaran-is/claude-code-onboarding

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for asc-crash-triage

README.md
[![agentmods](https://agentmods.dev/badge/skills/kumaran-is/claude-code-onboarding/asc-crash-triage/github.svg)](https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/asc-crash-triage)
Your own site
<a href="https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/asc-crash-triage"><img src="https://agentmods.dev/badge/skills/kumaran-is/claude-code-onboarding/asc-crash-triage/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for asc-crash-triage

Your own site · 80×15
<a href="https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/asc-crash-triage"><img src="https://agentmods.dev/badge/skills/kumaran-is/claude-code-onboarding/asc-crash-triage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,331 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00116 $0.01331
Opus 5 $0.00058 $0.00665
Sonnet 5 $0.00023 $0.00266
Haiku 4.5 $0.00012 $0.00133

Measured 8d ago against content hash c887d2ed2408, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

asc-crash-triage scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/asc-crash-triage/SKILL.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

asc Crash Triage

Iron Law

NEVER TRIAGE CRASHES WITHOUT FIRST IDENTIFYING THE BUILD AND APP IDS — USE asc-id-resolver TO RESOLVE THEM

Crash data from App Store Connect may have a 24-48 hour delay. Always specify --build to scope results to a specific release.

Workflow

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

TestFlight crash reports

List recent crashes (newest first):

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

TestFlight beta feedback

List recent feedback (newest first):

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

Performance diagnostics (hangs, disk writes, launches)

Requires a build ID. Resolve via asc builds latest --app "APP_ID" --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
  • Get logs for a signature: asc performance diagnostics get --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 latest --app "APP_ID" --platform IOS
  • Recent builds: asc builds list --app "APP_ID" --sort -uploadedDate --limit 5
  • Set default: export ASC_APP_ID="APP_ID"

Read the full file on GitHub · 103 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 103 lines · 0 tokens per session scan A c887d2ed2408

Subscribe to this mod's changes

asc-crash-triage is a skill published in the GitHub repository kumaran-is/claude-code-onboarding (35 stars, last pushed 2mo ago), licensed MIT. It adds 116 tokens to every session and 1,331 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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