System Prompt / Instructions
Projection Patterns
Comprehensive guide to building projections and read models for event-sourced systems.
Use this skill when
- Building CQRS read models
- Creating materialized views from events
- Optimizing query performance
- Implementing real-time dashboards
- Building search indexes from events
- Aggregating data across streams
Do not use this skill when
- The task is unrelated to projection patterns
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open
resources/implementation-playbook.md.
Resources
resources/implementation-playbook.mdfor detailed patterns and examples.
Frequently Asked Questions
What is projection-patterns?
projection-patterns is an expert AI persona designed to improve your coding workflow. Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems. It provides senior-level context directly within your IDE.
How do I install the projection-patterns skill in Cursor or Windsurf?
To install the projection-patterns skill, download the package, extract the files to your project's .cursor/skills directory, and type @projection-patterns in your editor chat to activate the expert instructions.
Is projection-patterns free to download?
Yes, the projection-patterns AI persona is completely free to download and integrate into compatible Agentic IDEs like Cursor, Windsurf, Github Copilot, and Anthropic MCP servers.
projection-patterns
Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems.
Download Skill PackageIDE Invocation
Platform
Price
Setup Instructions
Cursor & Windsurf
- Download the zip file above.
- Extract to
.cursor/skills - Type
@projection-patternsin editor chat.
Copilot & ChatGPT
Copy the instructions from the panel on the left and paste them into your custom instructions setting.
"Adding this projection-patterns persona to my Cursor workspace completely changed the quality of code my AI generates. Saves me hours every week."
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