Agent skill

Crash Analytics

MITAuto-check passedMobile

Install Crash Analytics

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/crash-analytics .claude/skills/crash-analytics && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .claude/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/crash-analytics .agents/skills/crash-analytics && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .agents/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/crash-analytics .cursor/skills/crash-analytics && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .cursor/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/appeeky/aso-skills.git --path skills/crash-analytics

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/crash-analytics .gemini/skills/crash-analytics && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .gemini/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/crash-analytics .github/skills/crash-analytics && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .github/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add appeeky/aso-skills --skill crash-analytics -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install appeeky/aso-skills crash-analytics --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/appeeky/aso-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/crash-analytics .opencode/skills/crash-analytics && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "crash-analytics" agent skill from https://github.com/appeeky/aso-skills/tree/main/skills/crash-analytics into .opencode/skills/crash-analytics/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "crash-analytics", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: crash-analytics
GitHub stars: 2.2k
Token cost: ~1.5k tokens
SKILL.md length: 502 words
Files: 1
Skills in repo: 39
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Works in 4 steps: Sort by "Impact" (unique users… → Group: onboarding, checkout, core… → Assign P0/P1 to the top 3–5 issues → …
Wants to monitor
SKILL.md covers Why Crash Rate Is an ASO Signal, Tools, Crashlytics Setup and Triage Framework, plus 7 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Crash Analytics is an agent skill from appeeky/aso-skills. When the user wants to monitor, triage, or reduce their app's crash rate — including setting up Crashlytics, prioritizing which crashes to fix first, interpreting crash data, and understanding how crashes affect App Store ranking. Use when the user mentions "crash", "crashlytics", "crash rate", "ANR", "app not responding", "crash-free sessions", "crash-free users", "symbolication", "stability", "firebase crashes", "app crashing", or "crash report". For overall analytics setup, see app-analytics.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering App store release and Mobile testing and debugging. It works with Firebase, App Store Connect and Xcode. The repository describes itself as: AI agent skills for App Store Optimization (ASO) and app marketing. Built for indie developers, app marketers, and growth teams who want Cursor, Claude Code, or any Agent… The licence is MIT.

When your agent uses it

Wants to monitor
Reduce their apps crash rate — including setting up Crashlytics
Prioritizing which crashes to fix first
Interpreting crash data

Example prompts

“crashlytics”
“crash rate”
“app not responding”
“/crash-analytics”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

Sort by "Impact" (unique users affected), not frequency
Group: onboarding, checkout, core feature, background, launch
Assign P0/P1 to the top 3–5 issues
Set a velocity alert in Crashlytics for any issue affecting >0.5% of users

What it can do on your machine

Read from SKILL.md and the folder at commit 3919d7c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are swift, kotlin and bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Crash Analytics loads about 1.5k tokens when it runs. Until then it costs about 129 tokens; SKILL.md has 502 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~129
When it runs · the whole SKILL.md, loaded when a task matches: ~1.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from appeeky/aso-skills at commit 3919d7c, republished under its MIT licence (© appeeky). 502 words, ~1,546 tokens.

Download SKILL.mdSave it as .claude/skills/crash-analytics/SKILL.md (or your agent's skills folder).

name: crash-analytics
description: When the user wants to monitor, triage, or reduce their app's crash rate — including setting up Crashlytics, prioritizing which crashes to fix first, interpreting crash data, and understanding how crashes affect App Store ranking. Use when the user mentions "crash", "crashlytics", "crash rate", "ANR", "app not responding", "crash-free sessions", "crash-free users", "symbolication", "stability", "firebase crashes", "app crashing", or "crash report". For overall analytics setup, see app-analytics.
metadata.version: 1.0.0

Crash Analytics

You help triage, prioritize, and reduce app crashes — and understand how crash rate affects App Store discoverability and ratings.

Why Crash Rate Is an ASO Signal

App Store ranking — Apple's algorithm penalizes apps with high crash rates
App Store featuring — High crash rate disqualifies editorial consideration
Ratings — Crashes are the #1 cause of 1-star reviews
Retention — A crash in the first session destroys Day 1 retention

Target: crash-free sessions > 99.5% | crash-free users > 99%

Tools

Tool	What it provides	Setup
Firebase Crashlytics	Real-time crashes, ANRs, symbolicated stack traces	Add `FirebaseCrashlytics` pod/SPM package
App Store Connect	Crash rate trend, crashes per session	Built-in, no code needed
Xcode Organizer	Aggregated crash logs from TestFlight + App Store	Xcode → Window → Organizer → Crashes
MetricKit	On-device diagnostics, hang rate, launch time	iOS 13+, automatic

Recommended: Crashlytics (real-time alerts + search) + App Store Connect (trend validation)

Crashlytics Setup

iOS (Swift)

swift

// AppDelegate or @main App struct
import FirebaseCore
import FirebaseCrashlytics

@main
struct MyApp: App {
    init() {
        FirebaseApp.configure()
        // Crashlytics is auto-initialized
    }
}

Non-fatal errors (track without crashing)

swift

// Log a non-fatal error
Crashlytics.crashlytics().record(error: error)

// Log a custom key for debugging context
Crashlytics.crashlytics().setCustomValue(userId, forKey: "user_id")
Crashlytics.crashlytics().setCustomValue(screenName, forKey: "current_screen")

Android (Kotlin)

kotlin

// build.gradle (app)
implementation("com.google.firebase:firebase-crashlytics:18.x.x")

// No additional code needed — auto-captures unhandled exceptions
// For non-fatal:
FirebaseCrashlytics.getInstance().recordException(throwable)

Triage Framework

Not all crashes are equal. Prioritize by impact:

Priority Score = Crash Frequency × Affected Users × User Segment Weight

Priority	Criteria	Response time
P0 — Critical	Crashes on launch / checkout / core feature; >1% of sessions	Fix today
P1 — High	Crashes in common flows; >0.1% of sessions	Fix this release
P2 — Medium	Edge case crashes; <0.1% of sessions	Fix next release
P3 — Low	Rare, non-blocking crashes; <0.01% of sessions	Backlog

Crashlytics Dashboard Triage

Sort by "Impact" (unique users affected), not frequency
Group: onboarding, checkout, core feature, background, launch
Assign P0/P1 to the top 3–5 issues
Set a velocity alert in Crashlytics for any issue affecting >0.5% of users

Reading a Crash Report

Fatal Exception: com.example.NullPointerException
  at com.example.UserProfileVC.loadData:87
  at com.example.HomeVC.viewDidLoad:45

Keys:
  user_id: 12345
  current_screen: "home"
  app_version: "2.3.1"
  os_version: "iOS 17.3"

Steps to debug:

Open the file and line in Xcode (UserProfileVC.swift:87)
Check what can be nil at that point
Reproduce with the user context (OS version, device, screen)
Write a failing test before fixing

Show full SKILL.md (200 more words)Show less

Symbolication

Crashlytics auto-symbolicates if you upload dSYMs. If you see unsymbolicated traces:

bash

# Manually upload dSYMs
./Pods/FirebaseCrashlytics/upload-symbols -gsp GoogleService-Info.plist -p ios MyApp.app.dSYM

For Bitcode-enabled builds, download dSYMs from App Store Connect → Activity → Build → dSYMs.

App Store Connect Crash Data

App Store Connect → App Analytics → Crashes — Crash rate trend per version
Compare crash rate before and after each release
A spike on a specific version = regression in that release

Crash rate formula: Crashes / Sessions × 100

Release Strategy to Minimize Blast Radius

Use phased releases to catch crashes before full rollout:

iOS: App Store Connect → Version → Phased Release (7-day rollout: 1% → 2% → 5% → 10% → 20% → 50% → 100%)

Android: Play Console → Production → Managed publishing → Rollout percentage

Rule: Monitor Crashlytics for 24 hours at each phase. If crash rate increases >0.2%, pause rollout.

Responding to Crash-Driven 1-Star Reviews

Identify the app version where crash-related 1-stars appeared
Fix the crash
Reply to each crash-related review: "Fixed in version X.X — please update"
After update ships, use rating-prompt-strategy to recover rating

Output Format

Crash Audit Report

Stability Report — [App Name] v[version] ([period])

Crash-free sessions: [X]%  (target: >99.5%)
Crash-free users:    [X]%  (target: >99%)
Top crash issues:

P0 Issues (fix immediately):
  #1 [Exception type] — [X] users, [X]% of sessions
     File: [filename:line]
     Cause: [hypothesis]
     Fix: [specific action]

P1 Issues (this release):
  #2 [Exception type] — [X] users, [X]% of sessions
     ...

Action Plan:
  Today:     Fix P0 issue #1 → release hotfix
  This week: Fix P1 issues #2, #3 → include in v[X.X]
  Monitoring: Set velocity alert at 0.5% session threshold

app-analytics — Full analytics stack; Crashlytics is one piece
rating-prompt-strategy — Recover rating after fixing crash-driven 1-stars
review-management — Respond to crash-related reviews
retention-optimization — Crashes on Day 1 destroy retention metrics
app-store-featured — Crash rate > 2% disqualifies editorial featuring

Files

Just SKILL.md in skills/crash-analytics of appeeky/aso-skills.

Open the folder on GitHubat commit 3919d7c

Compare with similar skills

Crash Analytics next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Crash Analytics compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Crash Analytics this skillappeeky/aso-skills	2.2k	—	~1.5k	Automated safety check: Pass	MIT	2 days ago
App Store Preflight Skillstruongduy2611/app-store-preflight-skills	1.4k	—	~1.4k	Automated safety check: Pass	MIT	4 mo ago
OdevioOdevio/Odevio-CLI	423	—	~7.6k	Automated safety check: Pass	MIT	14 days ago
iOS App Store SubmitZestfulPulse/ios-app-store-submit	142	—	~4.7k	Automated safety check: Pass	MIT	7 days ago
Remote Installericodesign/remote-installer	106	—	~4k	Automated safety check: Pass	MIT	8 days ago
Asc Xcode Buildrorkai/app-store-connect-cli-skills	1.1k	2 repos	~2.1k	Automated safety check: Pass	MIT	4 days ago

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Questions about Crash Analytics

What does Crash Analytics do?

When the user wants to monitor, triage, or reduce their app's crash rate — including setting up Crashlytics, prioritizing which crashes to fix first, interpreting crash data, and understanding how…. Crash Analytics is an agent skill from appeeky/aso-skills. When the user wants to monitor, triage, or reduce their app's crash rate — including setting up Crashlytics, prioritizing which crashes to fix first, interpreting crash data, and understanding how crashes affect App Store ranking.

When should I use Crash Analytics?

Crash Analytics fits situations like: wants to monitor; reduce their apps crash rate — including setting up Crashlytics; prioritizing which crashes to fix first; interpreting crash data.

How do I install Crash Analytics in Claude Code?

Run `npx skills add appeeky/aso-skills --skill crash-analytics -a claude-code`. Or copy the skill folder (skills/crash-analytics in appeeky/aso-skills) into .claude/skills/crash-analytics in your project. Claude Code loads it when a task matches its description.

How do I install Crash Analytics in Codex?

Run `npx skills add appeeky/aso-skills --skill crash-analytics -a codex`. Or copy the skill folder (skills/crash-analytics in appeeky/aso-skills) into .agents/skills/crash-analytics in your project. Codex loads it when a task matches its description.

Can I use Crash Analytics in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add appeeky/aso-skills --skill crash-analytics -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/crash-analytics, .gemini/skills/crash-analytics, .github/skills/crash-analytics and .opencode/skills/crash-analytics in your project.

What does Crash Analytics need to run?

SKILL.md names no scripts, command-line tools or credentials: Crash Analytics is instructions for the agent only.

Does Crash Analytics access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Crash Analytics safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Crash Analytics use?

Crash Analytics is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Crash Analytics use?

About 1.5k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Crash Analytics?

Skills that share tags, products or a category with Crash Analytics: App Store Preflight Skills (truongduy2611/app-store-preflight-skills, 1.4k stars), Odevio (Odevio/Odevio-CLI, 423 stars), iOS App Store Submit (ZestfulPulse/ios-app-store-submit, 142 stars) and Remote Installer (icodesign/remote-installer, 106 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Crash Analytics?

appeeky (a GitHub organization) maintains it in appeeky/aso-skills, which has 2,152 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 6, 2026.

Source: appeeky/aso-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Crash Analytics

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Crash Analytics

Why Crash Rate Is an ASO Signal

Tools

Crashlytics Setup

iOS (Swift)

Non-fatal errors (track without crashing)

Android (Kotlin)

Triage Framework

Crashlytics Dashboard Triage

Reading a Crash Report

Symbolication

App Store Connect Crash Data

Release Strategy to Minimize Blast Radius

Responding to Crash-Driven 1-Star Reviews

Output Format

Crash Audit Report

Related Skills

Files

Compare with similar skills

Similar skills

More from appeeky/aso-skills

Related

Questions about Crash Analytics