---
title: "Projection Patterns - Air Market"
description: "Your system records everything that happened as a stream of events, which is great for writing and awkward for reading. This helps you build the read side: views shaped for the questions you actually…"
canonical: "https://airmarket.ai/app/projection-patterns"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Projection Patterns

Skill by [Seth Hobson](/@wshobson)

# Projection Patterns

Make event streams answer queries fast

## What this does

Your system records everything that happened as a stream of events, which is great for writing and awkward for reading. This helps you build the read side: views shaped for the questions you actually ask. Reach for it when queries against your event history are slow or hard to write.

### Top 3 things it does for you

- Build a read model from an event stream
- Set up materialized views
- Speed up queries in an event-sourced system

## Information

**Projection Patterns at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Seth Hobson](/@wshobson) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 17 KB |
| Licence | MIT |
| Repository | [wshobson/agents](https://github.com/wshobson/agents/tree/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/backend-development/skills/projection-patterns) |
| GitHub stars | 39,077 (as of Nov 2026) |
| Installs | 10,930, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Projection Patterns and flagged nothing. AIR's verdict: **safe**.

**What Projection Patterns's check was run against**

|  |  |
| --- | --- |
| Commit | be57c0b2e3c05c528ca6132b87410b385718775f |
| Content hash | 000f5d55712ac891315bceb0d7e10091d3b52bacc6abdec55c05b17b7daa8cba |
| Files read | [Browse the files at this exact commit](https://github.com/wshobson/agents/blob/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/backend-development/skills/projection-patterns/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Projection Patterns](/security/projection-patterns)

## About Projection Patterns

This is about the read side of event-sourced systems: taking a stream of events and building projections and read models from it.

It applies when you are implementing the read half of CQRS, building materialized views, or trying to make queries perform in a system where the source of truth is a log of events.

## What's inside

- SKILL.md - instructions
- references/details.md - reference

## Questions

### Is Projection Patterns safe to install?

AIR scanned this exact version of Projection Patterns and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit be57c0b2e3c0, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/projection-patterns.

### How do I install Projection Patterns?

Open https://airmarket.ai/app/projection-patterns on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/wshobson/agents/tree/be57c0b2e3c05c528ca6132b87410b385718775f/plugins/backend-development/skills/projection-patterns. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Seth Hobson](/@wshobson)

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Canonical URL: <https://airmarket.ai/app/projection-patterns>