Mendix cli tool, a headless way to work with Mendix projects. Enables Mendix projects for use with 3rd party agentic coding tools like Claude Code and Copilot. Includes a starlark linter for quality validation.
This repository also configures its own agents. See what mxcli tells them →
Skill Claude Code
Author Mendix AI agent documents in MDL — Model, Knowledge Base, Consumed MCP Service and Agent, with variables, tools and multi-line prompts. Use when adding GenAI features to a Mendix app, wiring an LLM model or knowledge base, or listing/describing existing agent documents. Requires AgentEditorCommons and Mendix…
Skill Claude Code
Modify an existing page or snippet's widget tree in place with ALTER PAGE / ALTER SNIPPET — SET, INSERT, DROP, REPLACE and SET Layout. Use when changing a caption, style or property, adding or removing a widget, or reordering a form, instead of rewriting the whole page with CREATE OR REPLACE. The only safe way to…
Skill Claude Code
Find out what a running Mendix app actually does — logs, Prometheus metrics, OpenTelemetry traces and the model catalog, joined across sources. Use when profiling a slow page or microflow, finding what hits the database, chasing an error that shows only a generic dialog, or correlating runtime cost with model shape.
Skill Claude Code
Investigate an existing non-Mendix application (Java, .NET, Python, Node, PHP, …) and produce a structured migration assessment for Mendix. Use when asked to analyse a legacy codebase for migration, build a migration inventory, or size the effort before any MDL is written.
Skill Claude Code
Audit a Mendix project against best practices for naming, security, performance, maintainability and architecture, and report a scored result. Use when asked to evaluate project quality, run a pre-go-live health check, or get oriented in an unfamiliar app.
Skill Claude Code
Make a Mendix app look designed rather than default-Atlas: layout, spacing, typography, colour and design properties that reach a finished standard. Use when asked to make an app look professional, branded or less bland, when styling pages, or when matching a design mock.
Skill Claude Code
Provision a Mendix project in a repo that has none — interview, mxcli new, session hook, project brief, first commit, boot and quality baseline. Use when the repository is empty or has no .mpr yet, typically from the empty-repo seed prompt.
Skill Claude Code
Discover the external services a project consumes and browse their cached contracts through the MDL CATALOG — OData entities and actions, REST clients and operations, AsyncAPI channels and messages. Use when asked what integrations exist, what an OData service offers, or what a business-event contract contains.
Skill Claude Code
Discover and bulk-change widget properties across many pages with LIST WIDGETS and UPDATE WIDGETS. Use when the same widget setting has to change on many pages at once. Experimental — always DRY RUN first and back the project up.
Skill Claude Code
Define event-driven APIs over Kafka with Mendix business event services — publish and subscribe contracts, CREATE/DROP/DESCRIBE. Use when building publish/subscribe integration between apps, or inspecting the business event services a project already has.
Skill Claude Code
Search the Mendix Catalog platform service registry (catalog.mendix.com) from the CLI to find services published across an organisation. Use when looking for an existing published service to consume. This is the external registry, not the MDL CATALOG keyword — for that see browse-integrations.
Skill Claude Code
Quick fixes for the MDL syntax errors that come up most: undeclared variables, wrong retrieve source, list operations, expression mistakes. Use when mxcli check reports an error and you want the fix rather than the reference.
Skill Claude Code
One-page reference for declaring and assigning variables in MDL microflows — every type, with the exact syntax. Use when writing a declare and unsure of the spelling, or when a declaration error needs fixing fast.
Skill Claude Code needs its repo
Validate MDL with mxcli check before presenting or executing it, including reference resolution against a project. Use ALWAYS before showing MDL to a user, running mxcli exec, or committing a .mdl file — exec refuses exactly what check rejects.
Skill Claude Code
Fetch data from a RapidMiner graph mart or any SPARQL 1.1 HTTP endpoint (AnzoGraph and friends) and surface it as Mendix entities. Use when a graph database with a SPARQL endpoint has to feed a Mendix app read-only.
Skill Claude Code needs its repo
Build a Mendix pluggable widget from scratch with React and TypeScript and package it as an .mpk. Use when no marketplace or built-in widget covers what is needed and a custom React component has to be written.
Skill Claude Code needs its repo
CREATE PAGE syntax reference — parameters, variables, layouts, and the full widget vocabulary. Use before writing any CREATE PAGE statement, or when a widget's property spelling needs checking.
Skill Claude Code
MDL syntax for pluggable widgets in CREATE PAGE / ALTER PAGE — any installed widget is named by its own name (htmlelement frame (…) { … }), with object lists and child slots read from its definition. Covers GALLERY, COMBOBOX, DataGrid2, charts and third-party widgets: datasource and column forms, child slots…
Skill Claude Code
Connect a Mendix app to an external database over JDBC with the External Database Connector, and define the queries microflows run against it. Use when the app must read or write Oracle, PostgreSQL, MySQL or SQL Server directly from a microflow.
Skill Claude Code needs its repo
Diagnose BSON serialization problems in the MPR file — missing properties, wrong storage names, widget definitions Studio Pro rejects. Use when something created through MDL does not appear correctly in Studio Pro, or when a CE error points at a document mxcli wrote.
Skill Claude Code
Drive the Mendix runtime's microflow and nanoflow debugger from the command line with mxcli debug — breakpoints by name, variable inspection, step and continue. Use when a microflow produces the wrong result and reading it is not enough.
Skill Claude Code needs its repo
Seed a Mendix app's PostgreSQL database directly, bypassing the runtime — Mendix's internal ID system, association storage, and bulk import from an external database. Use when populating test or demo data, when data is needed before the UI exists, or for imports too large for the runtime.
Skill Claude Code
Build, run and validate a Mendix app in Docker from inside a devcontainer. Use when asked to run the app in Docker or produce a deployable image. For the faster Docker-free loop, prefer run-local.
Skill Claude Code needs its repo
The full lifecycle of Mendix Marketplace modules and widgets from the CLI — search, download, install, detect local edits, and update. Use when adding a marketplace module or widget, upgrading one, or asking what an upgrade would overwrite.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: