Agent skill
marten__event_projection
Create a Marten Event Projection for 1:1 event transformation or side-effects (creating separate documents per event).
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/other/marten-event-projection
SKILL.md
Follow this guide to create a Event Projection in Marten. This is best for flattening events into queryable documents (1 event -> 1 document) or copying data to other tables.
-
Define the Projection Class
- Create a
classinsrc/BookStore.ApiService/Projections/ - Base Class:
EventProjection - Template:
templates/Projection.cs
- Create a
-
Configure in Marten
- Open
src/BookStore.ApiService/Infrastructure/Extensions/MartenConfigurationExtensions.cs - Register:
csharp
options.Projections.Add<AuditLogProjection>(ProjectionLifecycle.Async);
- Open
-
Use Cases
- History tables
- Audit logs
- Flattening stream data for reporting/analytics (without aggregation)
Related Skills
/marten__multi_stream_projection: For aggregating data.
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