diff --git a/packages/zero-client/src/client/custom.test.ts b/packages/zero-client/src/client/custom.test.ts
index e9037afb8b..c132ecc5cd 100644
--- a/packages/zero-client/src/client/custom.test.ts
+++ b/packages/zero-client/src/client/custom.test.ts
@@ -55,6 +55,15 @@ test('argument types are preserved on the generated mutator interface', () => {
   }>();
 });
 
+test('cannot support non-namespace custom mutators', () => {
+  ({
+    // @ts-expect-error - all mutators must be in a namespace
+    setTitle: (_tx, _a: {id: string; title: string}) => {
+      throw new Error('not implemented');
+    },
+  }) satisfies CustomMutatorDefs<Schema>;
+});
+
 test('custom mutators write to the local store', async () => {
   const z = zeroForTest({
     logLevel: 'debug',
diff --git a/packages/zero-client/src/client/custom.ts b/packages/zero-client/src/client/custom.ts
index 68cc7f677d..83be2e2b14 100644
--- a/packages/zero-client/src/client/custom.ts
+++ b/packages/zero-client/src/client/custom.ts
@@ -68,9 +68,9 @@ export type MakeCustomMutatorInterface<
 export type TransactionReason = 'optimistic' | 'rebase';
 
 /**
- * WriteTransactions are used with *mutators* which are registered using
- * {@link ReplicacheOptions.mutators} and allows read and write operations on the
- * database.
+ * An instance of this is passed to custom mutator implementations and
+ * allows reading and writing to the database and IVM at the head
+ * at which the mutator is being applied.
  */
 export interface Transaction<S extends Schema> {
   readonly clientID: ClientID;
diff --git a/repro/package.json b/repro/package.json
new file mode 100644
index 0000000000..6472f05649
--- /dev/null
+++ b/repro/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "repro",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "check-types": "tsc && tsc -p tsconfig.node.json",
+    "check-types:watch": "tsc --watch",
+    "format": "prettier --write .",
+    "check-format": "prettier --check .",
+    "lint": "eslint --ext .ts,.tsx,.js,.jsx src/",
+    "preview": "vite preview",
+    "zero": "npm run zero-build-schema && tsx ../../packages/zero-cache/src/server/multi/main.ts",
+    "zero-brk": "npm run zero-build-schema && tsx --inspect-brk ../../packages/zero-cache/src/server/debug/single.ts",
+    "transform-query": "npm run zero-build-schema && tsx ../../packages/zero-cache/src/scripts/transform-query.ts",
+    "run-query": "npm run zero-build-schema && tsx ../../packages/zero-cache/src/scripts/run-query.ts",
+    "run-query-brk": "npm run zero-build-schema && tsx --inspect-brk ../../packages/zero-cache/src/scripts/run-query.ts",
+    "zero-build-schema": "tsx ../../packages/zero-schema/src/build-schema.ts",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "analyze": "analyze -c vite.config.ts"
+  },
+  "eslintConfig": {
+    "extends": "../../eslint-config.json"
+  },
+  "prettier": "@rocicorp/prettier-config"
+}
diff --git a/repro/schema.ts b/repro/schema.ts
new file mode 100644
index 0000000000..6f6985e547
--- /dev/null
+++ b/repro/schema.ts
@@ -0,0 +1,440 @@
+import {
+  createSchema,
+  table,
+  relationships,
+  definePermissions,
+  type ExpressionBuilder,
+  type Row,
+  NOBODY_CAN,
+  json,
+  string,
+  number,
+  boolean,
+} from "@rocicorp/zero";
+
+
+const user = table("user")
+  .columns({
+    id: string(),
+    email: string()
+  })
+  .primaryKey("id")
+
+const artist = table("artist")
+  .columns({
+    id: string(),
+    name: string()
+  })
+  .primaryKey("id")
+
+const recordingSetArtist = table("recording_set_artist")
+  .columns({
+    id: string(),
+    recording_set_id: string(),
+    artist_id: string()
+  })
+  .primaryKey("id")
+
+const recordingSet = table("recording_set")
+  .columns({
+    id: string(),
+    started_at: number(),
+    ended_at: number(),
+    location_id: string(),
+    short_id: string(),
+    duration: number()
+  })
+  .primaryKey("id")
+
+const location = table("location")
+  .columns({
+    id: string(),
+    name: string(),
+    code: string(),
+    short_id: string(),
+    workspace_id: string(),
+  })
+  .primaryKey("id")
+
+
+const workspace = table("workspace")
+  .columns({
+    id: string(),
+    name: string(),
+    type: string()
+  })
+  .primaryKey("id")
+
+const userWorkspace = table("user_workspace")
+  .columns({
+    id: string(),
+    user_id: string(),
+    workspace_id: string(),
+  })
+  .primaryKey("id")
+
+const recorderSoundcard = table("recorder_soundcard")
+  .columns({
+    id: string(),
+    recorder_id: string(),
+    model: string(),
+    serial_number: string(),
+    is_connected: boolean()
+  })
+  .primaryKey("id")
+
+const recorderConfig = table("recorder_config")
+  .columns({
+    id: string(),
+    location_id: string(),
+    recording_channels: number(),
+    recording_sample_rate: number(),
+    recording_bit_depth: number(),
+    recording_schedule: json<
+      {
+        rec_start: string;
+        rec_end: string;
+        dayofweek?: string;
+        date?: string;  // overrides default schedule for certain dates
+        display_name?: string;  // "default" marks the usual schedule; Special dates will have different display_name e.g. "New Year"
+        no_gig?: boolean;
+      }[]
+    >()
+  })
+  .primaryKey("id")
+
+const recorderStatus = table("recorder_status")
+  .columns({
+    id: string(),
+    recorder_id: string(),
+    last_connected_at: number(),
+    is_online: boolean(),
+    next_recording_at: number(),
+    is_in_recording_window: boolean(),
+    thing_group: string(),
+    software_version: string(),
+    wifi_name: string(),
+    is_wifi_connected: boolean(),
+    is_ethernet_connected: boolean()
+  })
+  .primaryKey("id")
+
+const recordingSetPurchase = table("recording_set_purchase")
+  .columns({
+    id: string(),
+    artist_id: string(),
+    is_completed: boolean(),
+    recording_set_id: string(),
+    location_id: string(),
+    price: number(),
+    currency: string(),
+    transfer_fee: string(),
+    vat_tax: string(),
+    post_tax_amount: string(),
+    venue_royalty: string(),
+    created_at: number()
+  })
+  .primaryKey("id")
+
+
+
+const recorderSoundcardRelationships = relationships(recorderSoundcard, ({ many }) => ({
+  workspaceUsers: many(
+    {
+      sourceField: ['recorder_id'],
+      destField: ['id'],
+      destSchema: location,
+    },
+    {
+      sourceField: ['workspace_id'],
+      destField: ['workspace_id'],
+      destSchema: userWorkspace,
+    }
+  ),
+}));
+
+const userWorkspaceRelationships = relationships(userWorkspace, ({ one }) => ({
+  user: one({
+    sourceField: ['user_id'],
+    destField: ['id'],
+    destSchema: user,
+  }),
+  workspace: one({
+    sourceField: ['workspace_id'],
+    destField: ['id'],
+    destSchema: workspace,
+  }),
+}));
+
+const recordingSetRelationships = relationships(recordingSet, ({ many, one }) => ({
+  artists: many(
+    {
+      sourceField: ['id'],
+      destField: ['recording_set_id'],
+      destSchema: recordingSetArtist
+    },
+    {
+      sourceField: ['artist_id'],
+      destField: ['id'],
+      destSchema: artist
+    }
+  ),
+  location: one({
+    sourceField: ['location_id'],
+    destField: ['id'],
+    destSchema: location
+  }),
+  workspaceUsers: many(
+    {
+      sourceField: ['location_id'],
+      destField: ['id'],
+      destSchema: location,
+    },
+    {
+      sourceField: ['workspace_id'],
+      destField: ['workspace_id'],
+      destSchema: userWorkspace,
+    }
+  ),
+  soundcards: many({
+    sourceField: ["id"],
+    destField: ["recorder_id"],
+    destSchema: recorderSoundcard
+  })
+}));
+
+const workspaceRelationships = relationships(workspace, ({ many }) => ({
+  workspaceUsers: many(
+    {
+      sourceField: ['id'],
+      destField: ['workspace_id'],
+      destSchema: userWorkspace,
+    },
+  ),
+}));
+
+const locationRelationships = relationships(location, ({ many }) => ({
+  workspaceUsers: many(
+    {
+      sourceField: ['workspace_id'],
+      destField: ['workspace_id'],
+      destSchema: userWorkspace,
+    },
+  ),
+  soundcards: many({
+    sourceField: ["id"],
+    destField: ["recorder_id"],
+    destSchema: recorderSoundcard
+  })
+}));
+
+const artistRelationships = relationships(artist, ({ many }) => ({
+  recordingSets: many(
+    {
+      sourceField: ['id'],
+      destField: ['artist_id'],
+      destSchema: recordingSetArtist,
+    },
+    {
+      sourceField: ['recording_set_id'],
+      destField: ['id'],
+      destSchema: recordingSet,
+    },
+  ),
+}));
+
+const recordingSetArtistRelationships = relationships(recordingSetArtist, ({ one }) => ({
+  artist: one({
+    sourceField: ['artist_id'],
+    destField: ['id'],
+    destSchema: artist,
+  }),
+  recordingSet: one({
+    sourceField: ['recording_set_id'],
+    destField: ['id'],
+    destSchema: recordingSet,
+  }),
+}));
+const recorderConfigRelationships = relationships(recorderConfig, ({ one }) => ({
+  recorder: one({
+    sourceField: ['location_id'],
+    destField: ['id'],
+    destSchema: location
+  })
+}))
+const recorderStatusRelationships = relationships(recorderStatus, ({ one }) => ({
+  recorder: one({
+    sourceField: ['recorder_id'],
+    destField: ['id'],
+    destSchema: location
+  })
+}))
+const recordingSetPurchaseRelationships = relationships(recordingSetPurchase, ({ one, many }) => ({
+  artist: one({
+    sourceField: ['artist_id'],
+    destField: ['id'],
+    destSchema: artist
+  }),
+  recordingSet: one({
+    sourceField: ['recording_set_id'],
+    destField: ['id'],
+    destSchema: recordingSet
+  }),
+  recorder: one({
+    sourceField: ['location_id'],
+    destField: ['id'],
+    destSchema: location
+  }),
+  workspaceUsers: many(
+    {
+      sourceField: ['location_id'],
+      destField: ['id'],
+      destSchema: location
+    },
+    {
+      sourceField: ['workspace_id'],
+      destField: ['workspace_id'],
+      destSchema: userWorkspace
+    }
+  )
+}))
+
+
+export const schema = createSchema(1, {
+  tables: [
+    user,
+    artist,
+    location,
+    workspace,
+    recordingSet,
+    recordingSetArtist,
+    userWorkspace,
+    recordingSetPurchase,
+    recorderConfig,
+    recorderStatus,
+    recorderSoundcard
+  ],
+  relationships: [
+    recorderStatusRelationships,
+    recorderConfigRelationships,
+    artistRelationships,
+    recordingSetPurchaseRelationships,
+    recordingSetArtistRelationships,
+    locationRelationships,
+    workspaceRelationships,
+    recordingSetRelationships,
+    userWorkspaceRelationships,
+    recorderSoundcardRelationships
+  ]
+}
+)
+
+export type Schema = typeof schema;
+type TableName = keyof Schema['tables'];
+
+export type RecordingSet = Row<typeof schema.tables.recording_set>;
+export type Artist = Row<typeof schema.tables.artist>;
+export type User = Row<typeof schema.tables.user>;
+export type Workspace = Row<typeof schema.tables.workspace>;
+
+type AuthData = {
+  properties: {
+    id: string,
+    email: string
+  };
+  sub: string
+};
+
+export const permissions = definePermissions<AuthData, Schema>(schema, () => {
+  const userIsLoggedIn = (
+    authData: AuthData,
+    { cmpLit }: ExpressionBuilder<Schema, TableName>,
+  ) => cmpLit(authData.sub, 'IS NOT', null);
+
+  const userMemberOfWorkspace = (
+    authData: AuthData,
+    eb: ExpressionBuilder<Schema, 'recording_set' | 'workspace'>,
+  ) =>
+    eb.exists('workspaceUsers', iq =>
+      iq.where((eb: ExpressionBuilder<Schema, 'user_workspace'>) => eb.cmp('user_id', '=', '018d36bd-4f47-731f-b132-34c5e331b3b0')))
+
+
+  const allowIfMemberOfWorkspace = (
+    authData: AuthData,
+    eb: ExpressionBuilder<Schema, 'recording_set' | 'workspace'>,
+  ) => {
+    return userMemberOfWorkspace(authData, eb)
+  }
+
+  return {
+    recording_set: {
+      row: {
+        select: [allowIfMemberOfWorkspace],
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      },
+    },
+    user: {
+      row: {
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    },
+    workspace: {
+      row: {
+        select: [allowIfMemberOfWorkspace],
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    },
+    location: {
+      row: {
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    },
+    user_workspace: {
+      row: {
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    },
+    artist: {
+      row: {
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    },
+    recording_set_artist: {
+      row: {
+        insert: NOBODY_CAN,
+        update: {
+          preMutation: NOBODY_CAN
+        },
+        delete: NOBODY_CAN
+      }
+    }
+  };
+});
+
+
+
+
diff --git a/repro/zero-schema.json b/repro/zero-schema.json
new file mode 100644
index 0000000000..a0020f698b
--- /dev/null
+++ b/repro/zero-schema.json
@@ -0,0 +1,859 @@
+{
+  "permissions": {
+    "recording_set": {
+      "row": {
+        "select": [
+          [
+            "allow",
+            {
+              "type": "correlatedSubquery",
+              "related": {
+                "system": "permissions",
+                "correlation": {
+                  "parentField": [
+                    "location_id"
+                  ],
+                  "childField": [
+                    "id"
+                  ]
+                },
+                "subquery": {
+                  "table": "location",
+                  "alias": "zsubq_workspaceUsers",
+                  "orderBy": [
+                    [
+                      "id",
+                      "asc"
+                    ]
+                  ],
+                  "where": {
+                    "type": "correlatedSubquery",
+                    "related": {
+                      "system": "permissions",
+                      "correlation": {
+                        "parentField": [
+                          "workspace_id"
+                        ],
+                        "childField": [
+                          "workspace_id"
+                        ]
+                      },
+                      "subquery": {
+                        "table": "user_workspace",
+                        "alias": "zsubq_workspaceUsers",
+                        "where": {
+                          "type": "simple",
+                          "left": {
+                            "type": "column",
+                            "name": "user_id"
+                          },
+                          "right": {
+                            "type": "literal",
+                            "value": "018d36bd-4f47-731f-b132-34c5e331b3b0"
+                          },
+                          "op": "="
+                        },
+                        "orderBy": [
+                          [
+                            "id",
+                            "asc"
+                          ]
+                        ]
+                      }
+                    },
+                    "op": "EXISTS"
+                  }
+                }
+              },
+              "op": "EXISTS"
+            }
+          ]
+        ],
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "user": {
+      "row": {
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "workspace": {
+      "row": {
+        "select": [
+          [
+            "allow",
+            {
+              "type": "correlatedSubquery",
+              "related": {
+                "system": "permissions",
+                "correlation": {
+                  "parentField": [
+                    "id"
+                  ],
+                  "childField": [
+                    "workspace_id"
+                  ]
+                },
+                "subquery": {
+                  "table": "user_workspace",
+                  "alias": "zsubq_workspaceUsers",
+                  "where": {
+                    "type": "simple",
+                    "left": {
+                      "type": "column",
+                      "name": "user_id"
+                    },
+                    "right": {
+                      "type": "literal",
+                      "value": "018d36bd-4f47-731f-b132-34c5e331b3b0"
+                    },
+                    "op": "="
+                  },
+                  "orderBy": [
+                    [
+                      "id",
+                      "asc"
+                    ]
+                  ]
+                }
+              },
+              "op": "EXISTS"
+            }
+          ]
+        ],
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "location": {
+      "row": {
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "user_workspace": {
+      "row": {
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "artist": {
+      "row": {
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    },
+    "recording_set_artist": {
+      "row": {
+        "insert": [],
+        "update": {
+          "preMutation": []
+        },
+        "delete": []
+      }
+    }
+  },
+  "schema": {
+    "version": 1,
+    "tables": {
+      "user": {
+        "name": "user",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "email": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "artist": {
+        "name": "artist",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "name": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "location": {
+        "name": "location",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "name": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "code": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "short_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "workspace_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "workspace": {
+        "name": "workspace",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "name": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "type": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recording_set": {
+        "name": "recording_set",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "started_at": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "ended_at": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "location_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "short_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "duration": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recording_set_artist": {
+        "name": "recording_set_artist",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "recording_set_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "artist_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "user_workspace": {
+        "name": "user_workspace",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "user_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "workspace_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recording_set_purchase": {
+        "name": "recording_set_purchase",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "artist_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "is_completed": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          },
+          "recording_set_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "location_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "price": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "currency": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "transfer_fee": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "vat_tax": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "post_tax_amount": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "venue_royalty": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "created_at": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recorder_config": {
+        "name": "recorder_config",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "location_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "recording_channels": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "recording_sample_rate": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "recording_bit_depth": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "recording_schedule": {
+            "type": "json",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recorder_status": {
+        "name": "recorder_status",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "recorder_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "last_connected_at": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "is_online": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          },
+          "next_recording_at": {
+            "type": "number",
+            "optional": false,
+            "customType": null
+          },
+          "is_in_recording_window": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          },
+          "thing_group": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "software_version": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "wifi_name": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "is_wifi_connected": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          },
+          "is_ethernet_connected": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      },
+      "recorder_soundcard": {
+        "name": "recorder_soundcard",
+        "columns": {
+          "id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "recorder_id": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "model": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "serial_number": {
+            "type": "string",
+            "optional": false,
+            "customType": null
+          },
+          "is_connected": {
+            "type": "boolean",
+            "optional": false,
+            "customType": null
+          }
+        },
+        "primaryKey": [
+          "id"
+        ]
+      }
+    },
+    "relationships": {
+      "recorder_status": {
+        "recorder": [
+          {
+            "sourceField": [
+              "recorder_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "one"
+          }
+        ]
+      },
+      "recorder_config": {
+        "recorder": [
+          {
+            "sourceField": [
+              "location_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "one"
+          }
+        ]
+      },
+      "artist": {
+        "recordingSets": [
+          {
+            "sourceField": [
+              "id"
+            ],
+            "destField": [
+              "artist_id"
+            ],
+            "destSchema": "recording_set_artist",
+            "cardinality": "many"
+          },
+          {
+            "sourceField": [
+              "recording_set_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "recording_set",
+            "cardinality": "many"
+          }
+        ]
+      },
+      "recording_set_purchase": {
+        "artist": [
+          {
+            "sourceField": [
+              "artist_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "artist",
+            "cardinality": "one"
+          }
+        ],
+        "recordingSet": [
+          {
+            "sourceField": [
+              "recording_set_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "recording_set",
+            "cardinality": "one"
+          }
+        ],
+        "recorder": [
+          {
+            "sourceField": [
+              "location_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "one"
+          }
+        ],
+        "workspaceUsers": [
+          {
+            "sourceField": [
+              "location_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "many"
+          },
+          {
+            "sourceField": [
+              "workspace_id"
+            ],
+            "destField": [
+              "workspace_id"
+            ],
+            "destSchema": "user_workspace",
+            "cardinality": "many"
+          }
+        ]
+      },
+      "recording_set_artist": {
+        "artist": [
+          {
+            "sourceField": [
+              "artist_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "artist",
+            "cardinality": "one"
+          }
+        ],
+        "recordingSet": [
+          {
+            "sourceField": [
+              "recording_set_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "recording_set",
+            "cardinality": "one"
+          }
+        ]
+      },
+      "location": {
+        "workspaceUsers": [
+          {
+            "sourceField": [
+              "workspace_id"
+            ],
+            "destField": [
+              "workspace_id"
+            ],
+            "destSchema": "user_workspace",
+            "cardinality": "many"
+          }
+        ],
+        "soundcards": [
+          {
+            "sourceField": [
+              "id"
+            ],
+            "destField": [
+              "recorder_id"
+            ],
+            "destSchema": "recorder_soundcard",
+            "cardinality": "many"
+          }
+        ]
+      },
+      "workspace": {
+        "workspaceUsers": [
+          {
+            "sourceField": [
+              "id"
+            ],
+            "destField": [
+              "workspace_id"
+            ],
+            "destSchema": "user_workspace",
+            "cardinality": "many"
+          }
+        ]
+      },
+      "recording_set": {
+        "artists": [
+          {
+            "sourceField": [
+              "id"
+            ],
+            "destField": [
+              "recording_set_id"
+            ],
+            "destSchema": "recording_set_artist",
+            "cardinality": "many"
+          },
+          {
+            "sourceField": [
+              "artist_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "artist",
+            "cardinality": "many"
+          }
+        ],
+        "location": [
+          {
+            "sourceField": [
+              "location_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "one"
+          }
+        ],
+        "workspaceUsers": [
+          {
+            "sourceField": [
+              "location_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "many"
+          },
+          {
+            "sourceField": [
+              "workspace_id"
+            ],
+            "destField": [
+              "workspace_id"
+            ],
+            "destSchema": "user_workspace",
+            "cardinality": "many"
+          }
+        ],
+        "soundcards": [
+          {
+            "sourceField": [
+              "id"
+            ],
+            "destField": [
+              "recorder_id"
+            ],
+            "destSchema": "recorder_soundcard",
+            "cardinality": "many"
+          }
+        ]
+      },
+      "user_workspace": {
+        "user": [
+          {
+            "sourceField": [
+              "user_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "user",
+            "cardinality": "one"
+          }
+        ],
+        "workspace": [
+          {
+            "sourceField": [
+              "workspace_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "workspace",
+            "cardinality": "one"
+          }
+        ]
+      },
+      "recorder_soundcard": {
+        "workspaceUsers": [
+          {
+            "sourceField": [
+              "recorder_id"
+            ],
+            "destField": [
+              "id"
+            ],
+            "destSchema": "location",
+            "cardinality": "many"
+          },
+          {
+            "sourceField": [
+              "workspace_id"
+            ],
+            "destField": [
+              "workspace_id"
+            ],
+            "destSchema": "user_workspace",
+            "cardinality": "many"
+          }
+        ]
+      }
+    }
+  }
+}
\ No newline at end of file