business-logic

business-logic is a cursor rule for Cursor from smeubank/cursor-template. It costs 0 tokens per session (267 once invoked), scanned A, original, MIT.

A checklist and template for designing the rules that control how an application behaves, including validation, state changes, metrics, and external services.

In plain words
What is it for?
Use it to define database-backed settings, validate inputs, control workflows, record state transitions, track key business measures, and integrate outside APIs.
Why use it?
It helps keep important decisions out of the user interface, makes them testable, and ensures failures and business events are handled clearly.

Cursor rule for Cursor

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 rules/smeubank/cursor-template/business-logic
Clone the repo
git clone --depth 1 https://github.com/smeubank/cursor-template

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 business-logic

README.md
[![agentmods](https://agentmods.dev/badge/rules/smeubank/cursor-template/business-logic.svg)](https://agentmods.dev/rules/smeubank/cursor-template/business-logic)
Your own site
<a href="https://agentmods.dev/rules/smeubank/cursor-template/business-logic"><img src="https://agentmods.dev/badge/rules/smeubank/cursor-template/business-logic.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 267 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 $0.00000 $0.00267
Opus 5 $0.00000 $0.00133
Sonnet 5 $0.00000 $0.00053
Haiku 4.5 $0.00000 $0.00027

Measured 4d ago against content hash e0528fdb7af3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

business-logic 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.

.cursor/rules/business-logic.mdc · 34 lines

What it actually says

Business Logic Template

📋 Business Logic Checklist

When implementing business logic:

  • Configuration is stored in database, not hardcoded
  • Business rules are clearly defined and testable
  • Input validation covers both format and business constraints
  • State transitions are controlled and logged
  • Metrics are collected for key business events
  • External API integrations handle failures gracefully
  • Error handling provides meaningful business context
  • Business logic is separated from presentation layer
  • Performance impact is considered for complex rules
  • Documentation explains business reasoning behind rules

🎯 Customization Notes

Replace the example business logic above with your specific domain:

  • Configuration: Define your business settings and rules
  • Validation: Implement domain-specific validation rules
  • Workflow: Design state machines for your business processes
  • Metrics: Track KPIs relevant to your business
  • Integration: Connect with external services used in your domain
  • Rules Engine: Implement complex business logic patterns
  • Metrics: Track KPIs relevant to your business
  • Integration: Connect with external services used in your domain
  • Rules Engine: Implement complex business logic patterns
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 · 34 lines · 0 tokens per session scan A e0528fdb7af3

Subscribe to this mod's changes

business-logic is a cursor rule published in the GitHub repository smeubank/cursor-template (6 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 267 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 2026-08-31.