ai-instructions: Instructions file for GitHub Copilot

.github/instructions/spring-boot-model.instructions.md

ai-instructions spring-boot-model.instructions.md is an instructions file for GitHub Copilot from lsampaioweb/ai-instructions. It costs 242 tokens per session, scanned A, original, MIT.

A set of Spring Boot rules for domain models, the application types that represent business data and rules. It keeps these models immutable and separate from database and HTTP details.

In plain words
What is it for?
Use it to define validated Java record models, immutable collections, and boundaries between domain, persistence, and controller code.
Why use it?
It prevents storage or web-framework concerns from leaking into the core business model.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is lsampaioweb/ai-instructions's own configuration. It tells GitHub Copilot how to work on ai-instructions itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ai-instructions configures →

Reuse

Borrowing it

Nothing to install: this file belongs to lsampaioweb/ai-instructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/lsampaioweb/ai-instructions/main/.github/instructions/spring-boot-model.instructions.md
Clone the repo
git clone --depth 1 https://github.com/lsampaioweb/ai-instructions

Made for: GitHub Copilot.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/lsampaioweb/ai-instructions/spring-boot-model.svg)](https://agentmods.dev/instructions/lsampaioweb/ai-instructions/spring-boot-model)
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<a href="https://agentmods.dev/instructions/lsampaioweb/ai-instructions/spring-boot-model"><img src="https://agentmods.dev/badge/instructions/lsampaioweb/ai-instructions/spring-boot-model.svg" alt="Measured on agentmods" height="20"></a>
Per session 242 This file is loaded in full into every session.
When invoked 242 The same file — it is already loaded in full.
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 $0.00242 $0.00242
Opus 5 $0.00121 $0.00121
Sonnet 5 $0.00048 $0.00048
Haiku 4.5 $0.00024 $0.00024

Measured 3d ago against content hash a32c11109202, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

ai-instructions spring-boot-model.instructions.md 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.

.github/instructions/spring-boot-model.instructions.md · 23 lines

What it actually says

Spring Boot Domain Model Engine

Naming Conventions

  • Name domain model types with the *Model suffix (e.g., HolidayModel, AccountModel).

Rules

  • Declare domain model types as Java records when all fields are set at construction time and the type is immutable.
  • Declare a compact canonical constructor in domain model records to validate required field invariants using Objects.requireNonNull.
  • Declare no instance methods in domain model records beyond what the Java record specification generates; delegate all business operations to the service layer.
  • Place domain model types inside the owning feature package.
  • Keep domain model types free of persistence annotations.
  • Keep domain model types free of HTTP transport annotations and validation annotations.
  • Use only primitive or standard Java types for all domain model fields.
  • Use immutable collection types (e.g., List.copyOf(...)) for any collection-typed field in a domain model record.

Safety Guards

  • Never use a domain model type directly as a controller method parameter or return type.
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 · 23 lines · 242 tokens per session scan A a32c11109202

Subscribe to this mod's changes

ai-instructions spring-boot-model.instructions.md is an instructions file published in the GitHub repository lsampaioweb/ai-instructions (1 stars, last pushed 14d ago), licensed MIT. It adds 242 tokens to every session, about $0.0012 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 2026-09-03.

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