create-entity

A command for adding a new entity—a kind of data record—to a Mendix domain model using MDL, Mendix’s model description language.

In plain words
What is it for?
Use it to define entities such as customers, products, orders, and order lines, including their attributes, constraints, and associations.
Why use it?
It turns a written description of an entity, its fields, rules, and relationships into model input. Validation helps catch MDL errors before execution.

Command for Claude Code

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 commands/mendixlabs/mxcli/create-entity
Clone the repo
git clone --depth 1 https://github.com/mendixlabs/mxcli

Made for: Claude Code.

Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 177 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 $0.00011 $0.00177
Opus 5 $0.00005 $0.00088
Sonnet 5 $0.00002 $0.00035
Haiku 4.5 $0.00001 $0.00018

Measured yesterday against content hash 08e0eef0d8ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-entity 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.

.claude/commands/mendix/create-entity.md · 29 lines

What it actually says

Create Entity

Create a new entity in the Mendix domain model using MDL.

Usage

Describe the entity you want:

  • Module name (use existing module or specify new one)
  • Entity name
  • Attributes with types and constraints
  • Any associations to other entities

Example Prompts

  • "Create a Customer entity in Sales with Name, Email, and Phone"
  • "Add a Product entity with SKU, Name, Price, and StockQuantity"
  • "Create Order and OrderLine entities with an association between them"

Notes

  • Use the generate-domain-model skill for MDL syntax
  • Run mxcli check script.mdl to validate before executing
  • Entity positions are set with @Position(x, y) annotation
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 · 29 lines · 11 tokens per session scan A 08e0eef0d8ae

Subscribe to this mod's changes

create-entity is a command published in the GitHub repository mendixlabs/mxcli (115 stars, last pushed 2d ago), licensed Apache-2.0. It adds 11 tokens to every session and 177 once invoked, about $0.0001 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 2026-08-30.