mobile-pr-silent-failure-hunter

mobile-pr-silent-failure-hunter is an agent for Claude Code from Abdallah-Abdelazim/mobile-pr-review-plugin. It costs 99 tokens per session (1,027 once invoked), scanned A, original, MIT.

A code-review agent for mobile pull requests in Android/Kotlin, iOS/Swift, or Kotlin Multiplatform. It looks for errors that are caught, hidden, or replaced with fallback behavior.

In plain words
What is it for?
Use it to audit a pull request by providing its purpose, full code changes, changed files, and relevant paths. It reviews exception handling, fallback logic, logging, and error propagation.
Why use it?
It helps find problems that may leave an app appearing to work while hiding failures from users and developers. It also checks that cancellation is not treated like an ordinary error.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the mobile-pr-review plugin — 1 skill, 7 agents shipped together

Good fit Use it to audit a pull request by providing its purpose, full code changes, changed files, and relevant paths. It reviews exception handling, fallback logic, logging, and error propagation.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter
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.

Clone the repo
git clone --depth 1 https://github.com/Abdallah-Abdelazim/mobile-pr-review-plugin

Made for: Claude Code.

Or install mobile-pr-review, the plugin that ships this one along with the rest of its 1 skill, 7 agents.

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 mobile-pr-silent-failure-hunter

README.md
[![agentmods](https://agentmods.dev/badge/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter/github.svg)](https://agentmods.dev/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter)
Your own site
<a href="https://agentmods.dev/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter"><img src="https://agentmods.dev/badge/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter/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 mobile-pr-silent-failure-hunter

Your own site · 80×15
<a href="https://agentmods.dev/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter"><img src="https://agentmods.dev/badge/agents/abdallah-abdelazim/mobile-pr-review-plugin/mobile-pr-silent-failure-hunter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,027 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 $0.00099 $0.01027
Opus 5 $0.00049 $0.00513
Sonnet 5 $0.00020 $0.00205
Haiku 4.5 $0.00010 $0.00103

Measured 12d ago against content hash 282660af7a59, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mobile-pr-silent-failure-hunter 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 12d 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.

agents/mobile-pr-silent-failure-hunter.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an elite error-handling auditor with zero tolerance for silent failures. Your mission: protect users and future debuggers by ensuring every error is properly surfaced, logged, or explicitly and justifiably handled. You run as a dedicated, independent lens alongside a general bug-hunt pass — you exist because error handling is where correctness reviews most often go soft.

Core principles

  1. Silent failures are unacceptable — an error that occurs without being logged, propagated, or deliberately and visibly handled is a defect.
  2. Fallbacks must be explicit and justified — falling back to alternate behavior without making that visible (log, UI state, comment) hides a problem instead of fixing it.
  3. Catch blocks must be specific — broad exception/error catching hides unrelated failures and makes debugging impossible.
  4. Cancellation is not an error — swallowing CancellationException (Kotlin) or ignoring Task cancellation (Swift) the same way as a real failure is itself a bug.

What to hunt for, by platform

Kotlin / Android / KMP:

  • Empty or log-only catch blocks; catch (e: Exception) that could also catch CancellationException and must rethrow it
  • try? -equivalents that discard errors: runCatching { }.getOrNull(), .getOrDefault(...) without logging
  • Fire-and-forget launch { } with no CoroutineExceptionHandler and no try/catch around code that can throw
  • A Flow's catch { } operator that emits a silent fallback value instead of propagating or surfacing the failure
  • KMP: a Kotlin exception crossing the Swift boundary uncaught (terminates the iOS app) instead of being converted to a result type or declared @Throws

Swift / iOS:

  • try? on a critical path with no logging and no fallback justification
  • Force operations that convert a real failure into a crash instead of a handled state: try!, as!, ! outside tests/previews
  • catch { } blocks that only print/log and continue without informing the user or propagating
  • A Task whose thrown error is never awaited/handled (fire-and-forget async work)

Read the full file on GitHub · 56 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. 12d ago First seen · 56 lines · 99 tokens per session scan A 282660af7a59

Subscribe to this mod's changes

mobile-pr-silent-failure-hunter is an agent published in the GitHub repository Abdallah-Abdelazim/mobile-pr-review-plugin (1 stars, last pushed 18d ago), licensed MIT. It adds 99 tokens to every session and 1,027 once invoked, about $0.0005 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 2026-08-31.

Related

Other agents, from other repositories

instrumentation-reviewer

Reviews code changes for observability quality — anti-patterns, missing context, naming conventions.

nexus-labs-automation/mobile-observability · 22 tokens

cmp-orchestrator

Coordinator for multi-step Kotlin/Compose Multiplatform harness work — plans, writes self-contained briefs, delegates execution to Opus subagents, and gates everything through the project's own verify lane before reporting done. Use for milestone-sized or multi-file CMP tasks (add a feature end-to-end, a spec-driven…

kvdm-co-pilot/create-cmp · 110 tokens

staff-reviewer

Adversarial reader of a diff that is written but not yet proven — the Build-stage exit. Reads the change cold, never the author's report, and lands what it finds as a FAILING TEST or a named human decision. It writes no verdict, holds no approval, and cannot pass or block anything: the suite does that. Use on…

kvdm-co-pilot/create-cmp · 0 tokens

pm-agent

Reads a design source (Figma MCP or an HTML mockup) and context/api/ specs to write tasks/{feature}.md. Classifies the request into one of 5 values (A: existing endpoint / B: new endpoint in existing domain / C: new domain / D: backend not built / client-only: no endpoint changes) and runs case-specific pre-checks…

bentleypark/claude-code-mobile-spine · 122 tokens

deep-worker

Maximum-depth single-task worker for harness work that must be right rather than fast — a falsification run, an architecture decision record, a mechanical refactor across many files, an adversarial review. Opus 5 at xhigh effort, always. Use when the orchestrator needs one isolated piece done thoroughly and will…

kvdm-co-pilot/create-cmp · 78 tokens

android-agent

Implements Android features in ../myapp-android/ based on tasks/ specs and context/api/. Translates the feature's design source (Figma or an HTML mockup) into Jetpack Compose components. Never modifies ../myapp-ios/, ../myapp-backend/, or mobile-spine/.

bentleypark/claude-code-mobile-spine · 65 tokens