Can this skill help with custom error messages?

Yes, it includes advanced patterns using mu/with-api-error-message to provide human-readable feedback when validation fails on specific fields.

What is Malli in the context of this skill?

Malli is a data validation and specification library for Clojure used within Metabase to define the structure of API requests and responses.

Why does this skill treat response schemas differently than request schemas?

Response schemas validate before JSON serialization occurs. This means they must account for raw Java Time objects (using :any) rather than the ISO-8601 strings expected in request parameters.

Does it support Metabase-specific schema types?

Yes, it prioritizes the use of the 'ms' namespace (metabase.util.malli.schema) for types like ms/PositiveInt and ms/BooleanValue which are optimized for the Metabase API.

How do I handle optional query parameters with this skill?

The skill provides patterns for using the {:optional true} property and :default values to ensure optional inputs don't trigger validation failures.

Metabase Malli API Schema Assistant

Name: Metabase Malli API Schema Assistant
Author: GregBaron

byGregBaron

0•

Desarrollo de API

Standardizes and automates the addition of Malli validation schemas to Metabase API endpoints for enhanced type safety and error handling.

This skill provides specialized guidance for implementing Malli schemas within the Metabase codebase, covering route parameters, query parameters, request bodies, and response types. It ensures consistency across the API by leveraging best practices for Clojure data validation, including proper handling of Java Time objects, optional parameters, and custom error messages. By accounting for the nuances of validation timing—specifically how schemas interact with data before and after JSON serialization—this skill helps developers build robust, self-documenting APIs that minimize runtime errors and improve developer experience.

Características Principales

01Provides contextual error message patterns to improve API consumer feedback

02Implements Metabase-specific utility schemas from the ms namespace for consistency

030 GitHub stars

04Generates comprehensive Malli schemas for route, query, and request body parameters

05Standardizes response schemas using appropriate Clojure-native and Java Time types

06Navigates complex validation timing differences between request coercion and response serialization

Casos de Uso

01Standardizing error reporting across diverse Metabase API modules using Malli utility functions

02Defining structured API response schemas to improve frontend-backend integration

03Hardening existing API endpoints with strict input validation and type checking

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add gregbaron/metabase-mysandbox add-malli-schemas

For use in Claude.ai and ChatGPT

Download Skill