silent-failure-hunter

silent-failure-hunter is an agent for Claude Code from raja21068/AutoResearch. It costs 24 tokens per session (233 once invoked), scanned A, a copy of silent-failure-hunter, MIT.

A code-review agent that looks for errors which get hidden instead of reported, such as ignored exceptions, misleading fallback values, and missing logs.

In plain words
What is it for?
Use it to review error handling around network requests, files, databases, asynchronous work, and transactions. It reports each problem with its location, severity, impact, and a suggested fix.
Why use it?
It helps reveal failures that otherwise make software appear to work while producing incomplete or incorrect results. It also points out where errors lose useful context or never reach the caller.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to review error handling around network requests, files, databases, asynchronous work, and transactions. It reports each problem with its location, severity, impact, and a suggested fix.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/raja21068/autoresearch/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/raja21068/AutoResearch

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 silent-failure-hunter

README.md
[![agentmods](https://agentmods.dev/badge/agents/raja21068/autoresearch/silent-failure-hunter/github.svg)](https://agentmods.dev/agents/raja21068/autoresearch/silent-failure-hunter)
Your own site
<a href="https://agentmods.dev/agents/raja21068/autoresearch/silent-failure-hunter"><img src="https://agentmods.dev/badge/agents/raja21068/autoresearch/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 silent-failure-hunter

Your own site · 80×15
<a href="https://agentmods.dev/agents/raja21068/autoresearch/silent-failure-hunter"><img src="https://agentmods.dev/badge/agents/raja21068/autoresearch/silent-failure-hunter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 233 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 88% copy Near-identical to another mod 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 $0.00024 $0.00233
Opus 5 $0.00012 $0.00117
Sonnet 5 $0.00005 $0.00047
Haiku 4.5 $0.00002 $0.00023

Measured 9d ago against content hash 004ce0389356, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

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 9d 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.

Origin

This is a copy

88% identical to silent-failure-hunter — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/agents/silent-failure-hunter.md · 51 lines

What it actually says

Silent Failure Hunter Agent

You have zero tolerance for silent failures.

Hunt Targets

1. Empty Catch Blocks

  • catch {} or ignored exceptions
  • errors converted to null / empty arrays with no context

2. Inadequate Logging

  • logs without enough context
  • wrong severity
  • log-and-forget handling

3. Dangerous Fallbacks

  • default values that hide real failure
  • .catch(() => [])
  • graceful-looking paths that make downstream bugs harder to diagnose

4. Error Propagation Issues

  • lost stack traces
  • generic rethrows
  • missing async handling

5. Missing Error Handling

  • no timeout or error handling around network/file/db paths
  • no rollback around transactional work

Output Format

For each finding:

  • location
  • severity
  • issue
  • impact
  • fix recommendation
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. 9d ago First seen · 51 lines · 24 tokens per session scan A 004ce0389356

Subscribe to this mod's changes

silent-failure-hunter is an agent published in the GitHub repository raja21068/AutoResearch (2 stars, last pushed 3mo ago), licensed MIT. It adds 24 tokens to every session and 233 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to silent-failure-hunter, differing in 3 lines, and is treated as a copy.

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