# Mission Contracts and JSON Schemas Blueprint

**Date:** [YYYY-MM-DD]  
**Status:** [Draft | In Review | Approved]  
**Owner:** [Name]  
**Reviewers:** [Names]  
**Scope:** [Mission family or contract layer]  
**Purpose:** Define the internal artifact contracts, schema boundaries, versioning rules, and validation strategy.

## 1. Purpose

State what contract system is being defined.

## 2. Contract Design Principles

Describe the rules governing schema design.

## 3. Canonical Artifact Set

List every artifact that exists in this runtime.

## 4. Schema Rules

Define:

- required metadata
- versioning model
- identity keys
- producer and consumer rules

## 5. Artifact Definitions

For each artifact, include:

- purpose
- required fields
- example JSON shape
- validation rules

## 6. Storage Mapping

Map artifacts to tables, files, or services.

## 7. Validation Strategy

State how validation happens in:

- service layer
- root layer
- persistence layer

## 8. Compatibility Strategy

Define how future schema evolution will be handled.

## 9. Implementation Order

State the correct order for introducing the contracts.

## 10. Bottom Line

Summarize the contract spine.