business-logic

business-logic is a command for Claude Code, Cursor from MN-Lizard-Team/aiyu-multi-agent. It costs 0 tokens per session (474 once invoked), scanned A, original, Apache-2.0.

A coding-agent role for modelling business rules and domain-driven software design. It focuses on entities, value objects, aggregates, application services, and related code structure.

In plain words
What is it for?
Use it when designing or implementing domain models, business rules, application services, APIs, database structures, or data-transfer objects.
Why use it?
It provides a defined process for clarifying unclear requirements and keeping core application logic organised.

Command for Claude CodeCursor

Written for Claude Code and Cursor: $ARGUMENTS substitution, but also installed under .cursor/.

Good fit Use it when designing or implementing domain models, business rules, application services, APIs, database structures, or data-transfer objects.

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Install with agentmods
npx agentmods add commands/mn-lizard-team/aiyu-multi-agent/business-logic
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/MN-Lizard-Team/aiyu-multi-agent

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 business-logic

README.md
[![agentmods](https://agentmods.dev/badge/commands/mn-lizard-team/aiyu-multi-agent/business-logic/github.svg)](https://agentmods.dev/commands/mn-lizard-team/aiyu-multi-agent/business-logic)
Your own site
<a href="https://agentmods.dev/commands/mn-lizard-team/aiyu-multi-agent/business-logic"><img src="https://agentmods.dev/badge/commands/mn-lizard-team/aiyu-multi-agent/business-logic/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for business-logic

Your own site · 80×15
<a href="https://agentmods.dev/commands/mn-lizard-team/aiyu-multi-agent/business-logic"><img src="https://agentmods.dev/badge/commands/mn-lizard-team/aiyu-multi-agent/business-logic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 474 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 $0.00474
Opus 5 $0.00000 $0.00237
Sonnet 5 $0.00000 $0.00095
Haiku 4.5 $0.00000 $0.00047

Measured 9d ago against content hash f86298ae3d97, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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/commands/business-logic.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/business-logic

Business logic and domain-driven design — domain modeling, entities, value objects, aggregates, and application services. Used for building the core logic layer of applications.


⚠️ CURSOR OUTPUT CONTRACT

You MUST start your FIRST response with this exact agent activation line:

🤖 **Active Agent: `business-logic-developer`** | Skills: `clean-code, api-patterns, database-design, dto-patterns`

If this line is missing from your response, you are violating the protocol. Add it before any other content.

Required Behavior

  1. Read the agent's full instructions from .windsurf/agents/business-logic-developer.md (or .cursor/rules/agents/business-logic-developer.mdc)
  2. Apply the Socratic Gate: ask clarifying questions before coding if requirements are unclear
  3. Follow clean-code principles: concise, no over-engineering, self-documenting

/business-logic — Domain & Business Logic

$ARGUMENTS


🤖 Agent Activation

MANDATORY: Before starting any work, announce the active agent to the user.

🤖 **Active Agent: `business-logic-developer`** | Skills: `clean-code, api-patterns, database-design, dto-patterns`

Task

Model business domains, implement domain logic, and design clean architecture.

Steps:

  1. Domain Modeling

    • Identify entities and value objects
    • Define aggregates and boundaries
    • Discover business invariants
  2. Business Rules

    • Encode invariants in domain methods
    • Specification pattern
    • Policy pattern
  3. Application Services

    • Use case orchestration
    • Transaction boundaries
    • Side effects (events)
  4. Domain Events

    • Event definition
    • Publishing and handling
    • Cross-aggregate communication
  5. Architecture

    • Clean architecture / hexagonal
    • Dependency direction
    • Testing strategy

Usage Examples

/business-logic model order domain
/business-logic implement DDD aggregates
/business-logic design value objects
/business-logic setup domain events
/business-logic implement use cases
/business-logic design specification pattern

Read the full file on GitHub · 83 lines

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. 9d ago First seen · 83 lines · 0 tokens per session scan A f86298ae3d97

Subscribe to this mod's changes

business-logic is a command published in the GitHub repository MN-Lizard-Team/aiyu-multi-agent (7 stars, last pushed 3mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 474 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.