SpacetimeDB C# SDK

This skill provides comprehensive guidance for building C# server-side modules and Unity/C# clients that connect to SpacetimeDB.

HALLUCINATED APIs — DO NOT USE

These APIs DO NOT EXIST. LLMs frequently hallucinate them.

// WRONG — these do not exist
[SpacetimeDB.Procedure]             // C# does NOT support procedures yet!
ctx.db.tableName                    // Wrong casing, should be PascalCase
ctx.Db.tableName.Get(id)            // Use Find, not Get
ctx.Db.TableName.FindById(id)       // Use index accessor: ctx.Db.TableName.Id.Find(id)
ctx.Db.table.field_name.Find(x)     // Wrong! Use PascalCase: ctx.Db.Table.FieldName.Find(x)
Optional<string> field;             // Use C# nullable: string? field