Mobile Observability Plugin
Teaches Claude how to instrument mobile apps correctly — what to measure, what context to attach, and what mistakes to avoid.
The Problem
Most mobile teams instrument poorly:
- Too little — Can't debug production issues
- Too much — Noise, cost, battery drain
- Wrong context — Errors without enough data to act on
This plugin teaches Claude to capture both user intent (what they tried to do) and system state (device conditions, errors, performance) so you can answer "Why did this fail, and for whom?"
Installation
claude plugin marketplace add calube/mobile-observability
claude plugin install mobile-observability
Usage
Commands
/instrument ios
/audit features/checkout
Natural Prompts
"How should I instrument this payment flow?"
"What context should I attach to crashes?"
"Set up session replay with Bitdrift"
"Review this code for observability anti-patterns"
"What's missing from our crash reporting setup?"
Commands
| Command | Description |
|---|
/instrument [platform] | Generate prioritized instrumentation plan for iOS, Android, React Native, or Flutter |
/audit [path] | Scan existing code for instrumentation gaps and anti-patterns |
Agents
Agent definitions that Claude reads and follows when performing analysis tasks.
codebase-analyzer
Explores mobile codebases to understand architecture and identify instrumentation opportunities.
Focus Areas:
- Platform and architecture detection (MVVM, TCA, Clean Architecture)
- Existing telemetry SDK inventory
- Entry points and key user flows
- Network, persistence, and state management layers
Output:
- Platform summary with language/version
- Architecture pattern identification
- Existing SDK coverage assessment
- Gap analysis with priority ranking
instrumentation-reviewer
Reviews code changes for observability issues before they ship.
Focus Areas:
- Anti-patterns (PII leaks, high cardinality, sync telemetry)
- Missing context (no user ID, no session, no screen)
- Naming consistency
- Vendor best practices
Output:
- Issues by severity with file:line references
- Specific fixes with code examples
- Vendor guideline references
Skills
8 skills that activate automatically based on context:
| Skill | Trigger |
|---|
instrumentation-planning | "What should I measure?" |
crash-instrumentation | "How to capture crashes with context" |
session-replay | "Set up session replay" |
interaction-latency | "Track button response time" |
navigation-latency | "Track screen load time" |
network-tracing | "Trace API requests" |
user-journey-tracking | "Track user funnels" |
symbolication-setup | "Configure dSYM upload" |
When to Use
Use this plugin for:
- Adding observability to a new or existing mobile app
- Setting up crash reporting, performance monitoring, or session replay
- Choosing between vendors (Sentry, Datadog, Embrace, Bitdrift, Firebase, etc.)
- Reviewing instrumentation code for anti-patterns
- Understanding what context to attach to errors
Don't use for:
- Backend/server observability
- Web frontend (different patterns)
- General logging questions unrelated to mobile
Directory Structure
mobile-observability/
├── commands/ # /instrument, /audit
├── agents/ # codebase-analyzer, instrumentation-reviewer
├── skills/ # 8 instrumentation skills
├── hooks/ # Anti-pattern warnings for Swift/Kotlin/TypeScript/Dart
└── references/ # 25+ guides covering methodology, platforms, vendors
Philosophy
- Start with crashes — Get crash reporting and symbolication right before adding anything else
- Context over volume — One error with full context beats 100 without
- User intent + system state — Link what users tried to do with device conditions (memory, network, battery)
- Avoid anti-patterns early — PII leaks and high cardinality are expensive to fix later
Author
Caleb Davis
License
MIT — see LICENSE
nexus-labs-automation
