silent-failure-hunter

silent-failure-hunter is an agent for Claude Code from talayash/agentrium. It costs 24 tokens per session (233 once invoked), scanned A, original, MIT.

A code-review agent that looks for errors which are caught, hidden, or replaced with misleading fallback results.

In plain words
What is it for?
Use it to inspect empty catch blocks, weak logging, swallowed exceptions, unsafe defaults, missing timeouts, and incomplete error handling.
Why use it?
It makes failures easier to detect and diagnose instead of allowing broken operations to appear successful.

Agent for Claude Code

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.

agentmods
npx agentmods add agents/talayash/agentrium/silent-failure-hunter
Clone the repo
git clone --depth 1 https://github.com/talayash/agentrium

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/talayash/agentrium/silent-failure-hunter.svg)](https://agentmods.dev/agents/talayash/agentrium/silent-failure-hunter)
Your own site
<a href="https://agentmods.dev/agents/talayash/agentrium/silent-failure-hunter"><img src="https://agentmods.dev/badge/agents/talayash/agentrium/silent-failure-hunter.svg" alt="Measured on agentmods" 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. Scan, not verified.
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 $0.00024 $0.00233
Opus 5 $0.00012 $0.00117
Sonnet 5 $0.00005 $0.00047
Haiku 4.5 $0.00002 $0.00023

Measured 4d ago against content hash 004ce0389356, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/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. 4d 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 talayash/agentrium (39 stars, last pushed 3d 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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