Adding New Message Types Guide

This guide explains how to add a new message type to the GitHub Agentic Workflows safe-output messages system. Follow these steps to ensure the new message is available in frontmatter, parsed by the compiler, available in JavaScript, and properly bundled.

Overview

The messages system allows workflow authors to customize messages displayed in safe-output operations. Messages flow through:

1. Frontmatter (YAML) → 2. JSON Schema → 3. Go Compiler → 4. JavaScript Modules → 5. Bundler

Step 1: Update JSON Schema

Add the new message field to pkg/parser/schemas/main_workflow_schema.json in the messages object:

{
  "messages": {
    "properties": {