error-handling-and-validation

error-handling-and-validation is a cursor rule for Cursor from holtwood/awesome-cursorrules-zh. It costs 0 tokens per session (185 once invoked), scanned A, original, MIT.

A code-quality guide for handling errors, invalid inputs, edge cases, preconditions, logging, and user-friendly error messages.

In plain words
What is it for?
It helps add early checks, guard clauses, error logging, custom error types, and clear messages to application code.
Why use it?
It prevents error paths from being overlooked and keeps failure handling readable and consistent.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit It helps add early checks, guard clauses, error logging, custom error types, and clear messages to application code.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/holtwood/awesome-cursorrules-zh/error-handling-and-validation
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/holtwood/awesome-cursorrules-zh

Made for: 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 error-handling-and-validation

README.md
[![agentmods](https://agentmods.dev/badge/rules/holtwood/awesome-cursorrules-zh/error-handling-and-validation.svg)](https://agentmods.dev/rules/holtwood/awesome-cursorrules-zh/error-handling-and-validation)
Your own site
<a href="https://agentmods.dev/rules/holtwood/awesome-cursorrules-zh/error-handling-and-validation"><img src="https://agentmods.dev/badge/rules/holtwood/awesome-cursorrules-zh/error-handling-and-validation.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 185 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 $0.00000 $0.00185
Opus 5 $0.00000 $0.00093
Sonnet 5 $0.00000 $0.00037
Haiku 4.5 $0.00000 $0.00018

Measured 3d ago against content hash 1a714271fec0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

error-handling-and-validation 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 3d 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.

docs/rules/frontend/react/nextjs-react-ts/error-handling-and-validation.mdc · 13 lines

What it actually says

  • 优先考虑错误处理和边缘情况:
    • 在函数开始时处理错误和边缘情况。
    • 对错误条件使用早期返回以避免深度嵌套的 if 语句。
    • 将正常路径放在函数最后以提高可读性。
    • 避免不必要的 else 语句;使用 if-return 模式代替。
    • 使用守卫子句早期处理前置条件和无效状态。
    • 实现适当的错误日志记录和用户友好的错误消息。
    • 考虑使用自定义错误类型或错误工厂以实现一致的错误处理。
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. 3d ago First seen · 13 lines · 185 tokens per session scan A 1a714271fec0

Subscribe to this mod's changes

error-handling-and-validation is a cursor rule published in the GitHub repository holtwood/awesome-cursorrules-zh (232 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 185 tokens. 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 2026-09-03.