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SSiertsema
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event-schema-design

Design evolvable CloudEvents 1.0 event schemas with versioning and registry governance.

1|Updated Nov 29, 2025
Search Tags:#registry#contract-design#data-governance#domain-events#event-design#cloud-events#schema-versioning
One-click install
npx skills add https://github.com/SSiertsema/claude-code-plugins --skill event-schema-design
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: event-schema-design
Source: https://github.com/SSiertsema/claude-code-plugins/tree/main/event-schema-design/skills/event-schema-design
Command: npx skills add https://github.com/SSiertsema/claude-code-plugins --skill event-schema-design

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Events are contracts that must remain readable and evolvable over years. Designing robust envelopes and payloads, versioning schemes, and registry governance is critical to prevent breaking changes and tribal knowledge.

Core Features & Use Cases

  • Envelope + payload separation to keep domain concerns decoupled
  • Versioning and compatibility modes to govern evolution
  • Registry-backed governance with clear naming, tracing, and PII declarations
  • Clear keys, correlation, and causation identifiers for traceability
  • Domain vs integration event classification to prevent internal leakage

Quick Start

Outline domain events, choose envelope and payload formats, and establish a versioning strategy for the domain.

Frequently Asked Questions about event-schema-design

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I design domain event schemas that won't break when they change over time?▼

Design evolvable event schemas by separating the CloudEvents 1.0 envelope from the payload, applying explicit versioning strategies, and enforcing registry-backed governance to prevent breaking changes across microservices.

What is the best way to structure CloudEvents envelopes for microservices?▼

Structuring CloudEvents envelopes involves enforcing the 1.0 standard usage while decoupling domain concerns into the payload, ensuring clear partition keys, correlation, and causation identifiers for reliable traceability.

How do I manage schema versioning and compatibility for domain events?▼

Manage schema versioning by establishing explicit compatibility modes and versioning strategies within a registry-driven workflow, ensuring domain events remain readable and evolvable over years without tribal knowledge.

Do I need a schema registry to govern event contracts across data pipelines?▼

A schema registry is needed to govern event contracts, enforcing clear naming conventions, tracing identifiers, and PII declarations, which prevents internal domain leakage and maintains contract integrity across distributed systems.

How do I declare PII and idempotency keys in event contracts?▼

Declare PII and idempotency keys within the event contract by defining explicit partition keys and PII declarations during the envelope and payload design phase, ensuring data governance and safe processing.

When should I classify events as domain vs integration events?▼

Classify events as domain versus integration events to prevent internal domain leakage, ensuring that domain events remain decoupled from integration concerns and maintain robust contract boundaries across microservices.

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