entity-class-conventions

entity-class-conventions is a cursor rule for coding agents from paulpham157/paul-s-cursor-rules. It costs 0 tokens per session (128 once invoked), scanned A, original, MIT.

Java entity rules for classes that represent database records in a Spring Data JPA application. They cover IDs, automatic ID generation, relationships, lazy loading, and field validation.

In plain words
What is it for?
Use them when defining database-backed entities, IDs, relationships, and validation annotations in a Spring project.
Why use it?
They make the connection between Java objects and database tables more predictable and help avoid loading related data before it is needed.

Cursor rule

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/paulpham157/paul-s-cursor-rules/entity-class-conventions
Clone the repo
git clone --depth 1 https://github.com/paulpham157/paul-s-cursor-rules

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 entity-class-conventions

README.md
[![agentmods](https://agentmods.dev/badge/rules/paulpham157/paul-s-cursor-rules/entity-class-conventions.svg)](https://agentmods.dev/rules/paulpham157/paul-s-cursor-rules/entity-class-conventions)
Your own site
<a href="https://agentmods.dev/rules/paulpham157/paul-s-cursor-rules/entity-class-conventions"><img src="https://agentmods.dev/badge/rules/paulpham157/paul-s-cursor-rules/entity-class-conventions.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 128 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 $0.00128
Opus 5 $0.00000 $0.00064
Sonnet 5 $0.00000 $0.00026
Haiku 4.5 $0.00000 $0.00013

Measured yesterday against content hash 19ace83f26e6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

entity-class-conventions 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 yesterday.

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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

1/framework_rules/rules/java-springboot-jpa-cursorrules-prompt-file/entity-class-conventions.mdc · 9 lines

What it actually says


description: Sets the standards for entity class design including annotations, ID generation strategies, and relationship configurations for database interaction. globs: **/src/main/java/com/example/entities/*.java

  • Must annotate entity classes with @Entity.
  • Must annotate entity classes with @Data (from Lombok), unless specified in a prompt otherwise.
  • Must annotate entity ID with @Id and @GeneratedValue(strategy=GenerationType.IDENTITY).
  • Must use FetchType.LAZY for relationships, unless specified in a prompt otherwise.
  • Annotate entity properties properly according to best practices, e.g., @Size, @NotEmpty, @Email, etc.
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. yesterday First seen · 9 lines · 128 tokens per session scan A 19ace83f26e6

Subscribe to this mod's changes

entity-class-conventions is a cursor rule published in the GitHub repository paulpham157/paul-s-cursor-rules (27 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 128 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.