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.
npx agentmods add rules/bernierllc/agents-environment-config/error-handlinggit clone --depth 1 https://github.com/bernierllc/agents-environment-configWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00440 | $0.00440 |
| Opus 5 | $0.00220 | $0.00220 |
| Sonnet 5 | $0.00088 | $0.00088 |
| Haiku 4.5 | $0.00044 | $0.00044 |
Grade A, and why
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 2d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 64 lines · 440 tokens per session scan A 1f598391aa94
error-handling is a cursor rule published in the GitHub repository bernierllc/agents-environment-config (10 stars, last pushed 13d ago), with no licence file. It adds 440 tokens to every session, about $0.0022 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.
Other cursor rules, from other repositories
安全重构
安全重构步骤：小步快走、先写测试、提取函数、消除重复代码.
error-learning
Применять после каждой ошибки, RCA, bugfix. Записывает ошибку в error-log.md, находит gap в инструкциях, добавляет в improvements-backlog.md. Цель: предотвратить повторение ошибок.
standard-agent-quality
Применять в VERIFY фазе каждой задачи. Определяет метрики успеха (linter=0, cross-check, challenge), границы (guardrails), feedback loop. Target: задачи без переделок >80%, повторные ошибки <10%.
126-swift-advanced
126: Advanced Swift patterns including error handling, SwiftUI design system, SwiftData, concurrency, security, and documentation.
012-evidence-requirements
012: Evidence-backed requirements and verification standards.
050-anti-hallucination
050: Ten strict guardrails to minimize hallucination.