add-error-handling

add-error-handling is a skill for Claude Code, Cursor from emaraschio/cursor-commands. It costs 13 tokens per session (416 once invoked), scanned A, original, MIT.

A workflow for finding and handling places where code can fail, such as invalid input, network problems, or unavailable services.

In plain words
What is it for?
Use it to add validation, error messages, logging, retries, fallbacks, suitable API error codes, or interface states for failed operations.
Why use it?
It makes failures clearer and gives the application ways to respond instead of stopping unexpectedly.

Skill for Claude CodeCursor

Written for Claude Code and Cursor: user-invocable in frontmatter, but also installed under .cursor/.

Good fit Use it to add validation, error messages, logging, retries, fallbacks, suitable API error codes, or interface states for failed operations.

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Install with agentmods
npx agentmods add skills/emaraschio/cursor-commands/add-error-handling
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.

Any agent
npx skills add emaraschio/cursor-commands --skill add-error-handling
Clone the repo
git clone --depth 1 https://github.com/emaraschio/cursor-commands

Made for: Claude Code, Cursor.

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 add-error-handling

README.md
[![agentmods](https://agentmods.dev/badge/skills/emaraschio/cursor-commands/add-error-handling.svg)](https://agentmods.dev/skills/emaraschio/cursor-commands/add-error-handling)
Your own site
<a href="https://agentmods.dev/skills/emaraschio/cursor-commands/add-error-handling"><img src="https://agentmods.dev/badge/skills/emaraschio/cursor-commands/add-error-handling.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 416 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 $0.00013 $0.00416
Opus 5 $0.00006 $0.00208
Sonnet 5 $0.00003 $0.00083
Haiku 4.5 $0.00001 $0.00042

Measured 8d ago against content hash 188706d8f1d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

add-error-handling 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 8d 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.

.cursor/skill-contracts/add-error-handling/SKILL.md · 50 lines

What it actually says

Overview

Implement comprehensive error handling for the current code to make it robust and resilient to failures while maintaining good user experience.

Steps

  1. Error Detection
    • Identify potential failure points and edge cases
    • Find unhandled exceptions and error conditions
    • Detect missing validation and boundary checks
    • Analyze async operations and network calls
  2. Error Handling Strategy
    • Implement try-catch blocks where appropriate
    • Add input validation and sanitization
    • Create meaningful error messages and logging
    • Design graceful degradation for non-critical failures
  3. Recovery Mechanisms
    • Implement retry logic for transient failures
    • Add fallback options for service unavailability
    • Create circuit breakers for external dependencies
    • Design proper error propagation and handling
  4. User Experience
    • Provide clear error messages to users
    • Implement proper error status codes for APIs
    • Add loading states and error boundaries for UI
    • Include helpful suggestions for error resolution

Add Error Handling Checklist

  • Identified all potential failure points and edge cases
  • Implemented try-catch blocks where appropriate
  • Added input validation and sanitization
  • Created meaningful error messages and logging
  • Implemented retry logic for transient failures
  • Added fallback options and circuit breakers
  • Provided clear error messages to users
  • Implemented proper error status codes for APIs
  • Added loading states and error boundaries for UI

Guardrails

  • Never swallow errors silently; handle them meaningfully, or log and rethrow.
  • Handle errors at meaningful boundaries instead of wrapping every call in try/catch.
  • Do not commit, push, merge, or run destructive commands without explicit user consent.
  • Never include secrets or credentials in error messages or logs; flag any exposure instead of printing or committing it.
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 50 lines · 13 tokens per session scan A 188706d8f1d2

Subscribe to this mod's changes

add-error-handling is a skill published in the GitHub repository emaraschio/cursor-commands (9 stars, last pushed 1mo ago), licensed MIT. It adds 13 tokens to every session and 416 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 2026-08-31.