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

API開発

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

概要

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.

主な機能

Provides contextual error message patterns to improve API consumer feedback
Implements Metabase-specific utility schemas from the ms namespace for consistency
0 GitHub stars
Generates comprehensive Malli schemas for route, query, and request body parameters
Standardizes response schemas using appropriate Clojure-native and Java Time types
Navigates complex validation timing differences between request coercion and response serialization

ユースケース

Standardizing error reporting across diverse Metabase API modules using Malli utility functions
Defining structured API response schemas to improve frontend-backend integration
Hardening existing API endpoints with strict input validation and type checking

概要

主な機能

Provides contextual error message patterns to improve API consumer feedback
Implements Metabase-specific utility schemas from the ms namespace for consistency
0 GitHub stars
Generates comprehensive Malli schemas for route, query, and request body parameters
Standardizes response schemas using appropriate Clojure-native and Java Time types
Navigates complex validation timing differences between request coercion and response serialization

ユースケース

Standardizing error reporting across diverse Metabase API modules using Malli utility functions
Defining structured API response schemas to improve frontend-backend integration
Hardening existing API endpoints with strict input validation and type checking