Release Notes: v0.4.0

Release Date: 2026-01-25

Highlights

• Schema codegen pipeline: Go types are now the source of truth
• New deployment platforms: Gemini CLI, ADK Go, CrewAI, AutoGen
• TypeScript SDK auto-generated from JSON Schema

What's New

Codegen Pipeline

Go types are now the source of truth for all schemas:

1. Define types in Go SDK
2. Generate JSON Schema using invopop/jsonschema
3. Generate TypeScript/Zod from JSON Schema

Go types → JSON Schema → TypeScript/Zod

• tools/generate/ - Go schema generator
• sdk/typescript/scripts/generate-schemas.mjs - TypeScript/Zod generator
• Makefile - Orchestrates full codegen pipeline

New Deployment Platforms

Platform	Config Type
Gemini CLI	GeminiCLIConfig
ADK Go	ADKGoConfig
CrewAI	CrewAIConfig
AutoGen	AutoGenConfig

Deployment Enhancements

• RuntimeConfig - Runtime configuration for deployment targets
• StepRuntime - Per-step runtime overrides
• RetryPolicy - Retry configuration
• ObservabilityConfig - Logging, metrics, tracing settings

Go SDK

• JSONSchema() methods on enum types for proper schema generation
• Typed platform config fields on Target
• Icon field in agent schema

Breaking Changes

• Go SDK: Target.Config json.RawMessage replaced with typed config fields
• TypeScript SDK now auto-generated (manual schemas.ts removed)

Fixed

• Report table alignment (boxWidth 76→78)
• Python SDK missing __init__.py files

Installation

Go SDK

go get github.com/plexusone/multi-agent-spec/sdk/go@v0.4.0

TypeScript SDK

npm install @plexusone/multi-agent-spec@0.4.0

Migration Guide

Go SDK: Target Config

Before (v0.3.x):

target := &mas.Target{
    Platform: mas.PlatformClaudeCode,
    Config:   json.RawMessage(`{"model": "sonnet"}`),
}

After (v0.4.0):

target := &mas.Target{
    Platform: mas.PlatformClaudeCode,
    ClaudeCode: &mas.ClaudeCodeConfig{
        Model: "sonnet",
    },
}