What is error-handling-patterns?

A guide to designing how TypeScript and Python programs report and recover from failures. It covers exceptions, Result/Either values that return success or failure explicitly, retries, error boundaries, and structured error logs.

Use it to design exception hierarchies, choose between exceptions and Result types, plan retry or circuit-breaker behavior, and build error-recovery flows.

It helps teams choose a consistent failure strategy instead of mixing ad hoc exceptions, retries, and recovery code.

error-handling-patterns — Plugin for Claude Code by curiositech

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/curiositech/some_claude_skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/curiositech/some_claude_skills/error-handling-patterns.svg)](https://agentmods.dev/plugins/curiositech/some_claude_skills/error-handling-patterns)

Your own site

<a href="https://agentmods.dev/plugins/curiositech/some_claude_skills/error-handling-patterns"><img src="https://agentmods.dev/badge/plugins/curiositech/some_claude_skills/error-handling-patterns.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 111 tokens a session between them.

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.

Security

Grade A, and why

error-handling-patterns 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 yesterday.

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.

.claude/skills/error-handling-patterns/.claude-plugin/plugin.json · 5 lines

What it actually says

{
  "name": "error-handling-patterns",
  "description": "Design error handling strategies for TypeScript and Python applications \u2014 exception hierarchies, Result/Either types, retry patterns, error boundaries, and structured error logging. Use when designing error handling architecture, choosing between exceptions and Result types, implementing retry logic, or building error recovery flows. Activate on \"error handling\", \"exception hierarchy\", \"Result type\", \"retry pattern\", \"circuit breaker\", \"error boundary\", \"Pokemon exception\". NOT for debugging specific runtime errors, logging infrastructure setup, or monitoring/alerting configuration."
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 111 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill error-handling-patterns A 111 tokens

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.

yesterday First seen · 5 lines scan A 4eee0f75ccb1

Subscribe to this mod's changes

error-handling-patterns is a plugin published in the GitHub repository curiositech/some_claude_skills (211 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-06.

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