entity-class-conventions

entity-class-conventions is a cursor rule for coding agents from toptalentcoder/Cursor-AwesomeRules. It costs 128 tokens per session, scanned A, a copy of entity-class-conventions, CC0-1.0.

A set of rules for Java persistence entities, which represent database records in an application. It defines entity annotations, generated IDs, lazy relationship loading, and field validation.

In plain words
What is it for?
Use it when creating or reviewing entity classes, primary keys, relationships, generated IDs, and validation annotations.
Why use it?
It creates a consistent mapping between Java objects and database records. Lazy loading can also help avoid fetching related data until 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/toptalentcoder/cursor-awesomerules/entity-class-conventions
Clone the repo
git clone --depth 1 https://github.com/toptalentcoder/Cursor-AwesomeRules

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/toptalentcoder/cursor-awesomerules/entity-class-conventions.svg)](https://agentmods.dev/rules/toptalentcoder/cursor-awesomerules/entity-class-conventions)
Your own site
<a href="https://agentmods.dev/rules/toptalentcoder/cursor-awesomerules/entity-class-conventions"><img src="https://agentmods.dev/badge/rules/toptalentcoder/cursor-awesomerules/entity-class-conventions.svg" alt="Measured on agentmods" height="20"></a>
Per session 128 This file is loaded in full into every session.
When invoked 128 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00128 $0.00128
Opus 5 $0.00064 $0.00064
Sonnet 5 $0.00026 $0.00026
Haiku 4.5 $0.00013 $0.00013

Measured today 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 today.

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

This is a copy

100% identical to entity-class-conventions — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

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

What it actually says

  • 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. today 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 toptalentcoder/Cursor-AwesomeRules (6 stars, last pushed 1y ago), licensed CC0-1.0. It adds 128 tokens to every session, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to entity-class-conventions, differing in 0 lines, and is treated as a copy.