diff --git a/app/__test__/data/data.test.ts b/app/__test__/data/data.test.ts
index 886f2aa..79b4301 100644
--- a/app/__test__/data/data.test.ts
+++ b/app/__test__/data/data.test.ts
@@ -110,4 +110,18 @@ describe("some tests", async () => {
          new EntityManager([entity, entity2], connection);
       }).toThrow();
    });
+
+   test("primary uuid", async () => {
+      const entity = new Entity("users", [
+         new PrimaryField("id", { format: "uuid" }),
+         new TextField("username"),
+      ]);
+      const em = new EntityManager([entity], getDummyConnection().dummyConnection);
+      await em.schema().sync({ force: true });
+
+      const mutator = em.mutator(entity);
+      const data = await mutator.insertOne({ username: "test" });
+      expect(data.data.id).toBeDefined();
+      expect(data.data.id).toBeString();
+   });
 });
diff --git a/app/package.json b/app/package.json
index 350340f..febba33 100644
--- a/app/package.json
+++ b/app/package.json
@@ -70,7 +70,8 @@
     "oauth4webapi": "^2.11.1",
     "object-path-immutable": "^4.1.2",
     "radix-ui": "^1.1.3",
-    "swr": "^2.3.3"
+    "swr": "^2.3.3",
+    "uuid": "^11.1.0"
   },
   "devDependencies": {
     "@aws-sdk/client-s3": "^3.758.0",
@@ -99,7 +100,7 @@
     "dotenv": "^16.4.7",
     "jotai": "^2.12.2",
     "jsdom": "^26.0.0",
-    "jsonv-ts": "^0.0.14-alpha.6",
+    "jsonv-ts": "^0.1.0",
     "kysely-d1": "^0.3.0",
     "open": "^10.1.0",
     "openapi-types": "^12.1.3",
diff --git a/app/src/core/config.ts b/app/src/core/config.ts
index 189b6c9..99a9013 100644
--- a/app/src/core/config.ts
+++ b/app/src/core/config.ts
@@ -3,9 +3,9 @@
  */
 import type { Generated } from "kysely";
 
-export type PrimaryFieldType<IdType extends number = number> = IdType | Generated<IdType>;
+export type PrimaryFieldType<IdType = number | string> = IdType | Generated<IdType>;
 
-export interface AppEntity<IdType extends number = number> {
+export interface AppEntity<IdType = number | string> {
    id: PrimaryFieldType<IdType>;
 }
 
diff --git a/app/src/core/utils/uuid.ts b/app/src/core/utils/uuid.ts
index 32397e8..e3112e2 100644
--- a/app/src/core/utils/uuid.ts
+++ b/app/src/core/utils/uuid.ts
@@ -1,4 +1,10 @@
+import { v4, v7 } from "uuid";
+
 // generates v4
 export function uuid(): string {
-   return crypto.randomUUID();
+   return v4();
+}
+
+export function uuidv7(): string {
+   return v7();
 }
diff --git a/app/src/data/api/DataController.ts b/app/src/data/api/DataController.ts
index 8c3ab45..e0f6c03 100644
--- a/app/src/data/api/DataController.ts
+++ b/app/src/data/api/DataController.ts
@@ -233,6 +233,8 @@ export class DataController extends Controller {
       const hono = this.create();
 
       const entitiesEnum = this.getEntitiesEnum(this.em);
+      // @todo: make dynamic based on entity
+      const idType = s.anyOf([s.number(), s.string()], { coerce: (v) => v as any });
 
       /**
        * Function endpoints
@@ -333,7 +335,7 @@ export class DataController extends Controller {
             "param",
             s.object({
                entity: entitiesEnum,
-               id: s.string(),
+               id: idType,
             }),
          ),
          jsc("query", repoQuery, { skipOpenAPI: true }),
@@ -342,8 +344,9 @@ export class DataController extends Controller {
             if (!this.entityExists(entity)) {
                return this.notFound(c);
             }
+            console.log("id", id);
             const options = c.req.valid("query") as RepoQuery;
-            const result = await this.em.repository(entity).findId(Number(id), options);
+            const result = await this.em.repository(entity).findId(id, options);
 
             return c.json(this.repoResult(result), { status: result.data ? 200 : 404 });
          },
@@ -362,7 +365,7 @@ export class DataController extends Controller {
             "param",
             s.object({
                entity: entitiesEnum,
-               id: s.string(),
+               id: idType,
                reference: s.string(),
             }),
          ),
@@ -376,7 +379,7 @@ export class DataController extends Controller {
             const options = c.req.valid("query") as RepoQuery;
             const result = await this.em
                .repository(entity)
-               .findManyByReference(Number(id), reference, options);
+               .findManyByReference(id, reference, options);
 
             return c.json(this.repoResult(result), { status: result.data ? 200 : 404 });
          },
@@ -485,7 +488,7 @@ export class DataController extends Controller {
             tags: ["data"],
          }),
          permission(DataPermissions.entityUpdate),
-         jsc("param", s.object({ entity: entitiesEnum, id: s.number() })),
+         jsc("param", s.object({ entity: entitiesEnum, id: idType })),
          jsc("json", s.object({})),
          async (c) => {
             const { entity, id } = c.req.valid("param");
@@ -493,7 +496,7 @@ export class DataController extends Controller {
                return this.notFound(c);
             }
             const body = (await c.req.json()) as EntityData;
-            const result = await this.em.mutator(entity).updateOne(Number(id), body);
+            const result = await this.em.mutator(entity).updateOne(id, body);
 
             return c.json(this.mutatorResult(result));
          },
@@ -507,13 +510,13 @@ export class DataController extends Controller {
             tags: ["data"],
          }),
          permission(DataPermissions.entityDelete),
-         jsc("param", s.object({ entity: entitiesEnum, id: s.number() })),
+         jsc("param", s.object({ entity: entitiesEnum, id: idType })),
          async (c) => {
             const { entity, id } = c.req.valid("param");
             if (!this.entityExists(entity)) {
                return this.notFound(c);
             }
-            const result = await this.em.mutator(entity).deleteOne(Number(id));
+            const result = await this.em.mutator(entity).deleteOne(id);
 
             return c.json(this.mutatorResult(result));
          },
diff --git a/app/src/data/connection/sqlite/SqliteConnection.ts b/app/src/data/connection/sqlite/SqliteConnection.ts
index a63d49b..33a3fd8 100644
--- a/app/src/data/connection/sqlite/SqliteConnection.ts
+++ b/app/src/data/connection/sqlite/SqliteConnection.ts
@@ -31,7 +31,11 @@ export class SqliteConnection extends Connection {
          type,
          (col: ColumnDefinitionBuilder) => {
             if (spec.primary) {
-               return col.primaryKey().notNull().autoIncrement();
+               if (spec.type === "integer") {
+                  return col.primaryKey().notNull().autoIncrement();
+               }
+
+               return col.primaryKey().notNull();
             }
             if (spec.references) {
                let relCol = col.references(spec.references);
diff --git a/app/src/data/data-schema.ts b/app/src/data/data-schema.ts
index 38f272f..c594117 100644
--- a/app/src/data/data-schema.ts
+++ b/app/src/data/data-schema.ts
@@ -1,4 +1,4 @@
-import { type Static, StringRecord, objectTransform } from "core/utils";
+import { type Static, StringEnum, StringRecord, objectTransform } from "core/utils";
 import * as tb from "@sinclair/typebox";
 import {
    FieldClassMap,
@@ -8,6 +8,7 @@ import {
    entityTypes,
 } from "data";
 import { MediaField, mediaFieldConfigSchema } from "../media/MediaField";
+import { primaryFieldTypes } from "./fields";
 
 export const FIELDS = {
    ...FieldClassMap,
@@ -72,6 +73,9 @@ export const indicesSchema = tb.Type.Object(
 export const dataConfigSchema = tb.Type.Object(
    {
       basepath: tb.Type.Optional(tb.Type.String({ default: "/api/data" })),
+      default_primary_format: tb.Type.Optional(
+         StringEnum(primaryFieldTypes, { default: "integer" }),
+      ),
       entities: tb.Type.Optional(StringRecord(entitiesSchema, { default: {} })),
       relations: tb.Type.Optional(StringRecord(tb.Type.Union(relationsSchema), { default: {} })),
       indices: tb.Type.Optional(StringRecord(indicesSchema, { default: {} })),
diff --git a/app/src/data/entities/Entity.ts b/app/src/data/entities/Entity.ts
index b097557..cdcbce6 100644
--- a/app/src/data/entities/Entity.ts
+++ b/app/src/data/entities/Entity.ts
@@ -6,7 +6,13 @@ import {
    snakeToPascalWithSpaces,
    transformObject,
 } from "core/utils";
-import { type Field, PrimaryField, type TActionContext, type TRenderContext } from "../fields";
+import {
+   type Field,
+   PrimaryField,
+   primaryFieldTypes,
+   type TActionContext,
+   type TRenderContext,
+} from "../fields";
 import * as tbbox from "@sinclair/typebox";
 const { Type } = tbbox;
 
@@ -18,6 +24,7 @@ export const entityConfigSchema = Type.Object(
       description: Type.Optional(Type.String()),
       sort_field: Type.Optional(Type.String({ default: config.data.default_primary_field })),
       sort_dir: Type.Optional(StringEnum(["asc", "desc"], { default: "asc" })),
+      primary_format: Type.Optional(StringEnum(primaryFieldTypes)),
    },
    {
       additionalProperties: false,
@@ -68,7 +75,14 @@ export class Entity<
       if (primary_count > 1) {
          throw new Error(`Entity "${name}" has more than one primary field`);
       }
-      this.fields = primary_count === 1 ? [] : [new PrimaryField()];
+      this.fields =
+         primary_count === 1
+            ? []
+            : [
+                 new PrimaryField(undefined, {
+                    format: this.config.primary_format,
+                 }),
+              ];
 
       if (fields) {
          fields.forEach((field) => this.addField(field));
diff --git a/app/src/data/entities/Mutator.ts b/app/src/data/entities/Mutator.ts
index 104ca33..7dcb2dd 100644
--- a/app/src/data/entities/Mutator.ts
+++ b/app/src/data/entities/Mutator.ts
@@ -143,7 +143,7 @@ export class Mutator<
 
       // if listener returned, take what's returned
       const _data = result.returned ? result.params.data : data;
-      const validatedData = {
+      let validatedData = {
          ...entity.getDefaultObject(),
          ...(await this.getValidatedData(_data, "create")),
       };
@@ -159,6 +159,16 @@ export class Mutator<
          }
       }
 
+      // primary
+      const primary = entity.getPrimaryField();
+      const primary_value = primary.getNewValue();
+      if (primary_value) {
+         validatedData = {
+            [primary.name]: primary_value,
+            ...validatedData,
+         };
+      }
+
       const query = this.conn
          .insertInto(entity.name)
          .values(validatedData)
@@ -175,7 +185,7 @@ export class Mutator<
 
    async updateOne(id: PrimaryFieldType, data: Partial<Input>): Promise<MutatorResponse<Output>> {
       const entity = this.entity;
-      if (!Number.isInteger(id)) {
+      if (!id) {
          throw new Error("ID must be provided for update");
       }
 
@@ -212,7 +222,7 @@ export class Mutator<
 
    async deleteOne(id: PrimaryFieldType): Promise<MutatorResponse<Output>> {
       const entity = this.entity;
-      if (!Number.isInteger(id)) {
+      if (!id) {
          throw new Error("ID must be provided for deletion");
       }
 
diff --git a/app/src/data/fields/PrimaryField.ts b/app/src/data/fields/PrimaryField.ts
index 2cc2983..efcfd6f 100644
--- a/app/src/data/fields/PrimaryField.ts
+++ b/app/src/data/fields/PrimaryField.ts
@@ -1,13 +1,17 @@
 import { config } from "core";
-import type { Static } from "core/utils";
+import { StringEnum, uuidv7, type Static } from "core/utils";
 import { Field, baseFieldConfigSchema } from "./Field";
 import * as tbbox from "@sinclair/typebox";
 import type { TFieldTSType } from "data/entities/EntityTypescript";
 const { Type } = tbbox;
 
+export const primaryFieldTypes = ["integer", "uuid"] as const;
+export type TPrimaryFieldFormat = (typeof primaryFieldTypes)[number];
+
 export const primaryFieldConfigSchema = Type.Composite([
    Type.Omit(baseFieldConfigSchema, ["required"]),
    Type.Object({
+      format: Type.Optional(StringEnum(primaryFieldTypes, { default: "integer" })),
       required: Type.Optional(Type.Literal(false)),
    }),
 ]);
@@ -21,8 +25,8 @@ export class PrimaryField<Required extends true | false = false> extends Field<
 > {
    override readonly type = "primary";
 
-   constructor(name: string = config.data.default_primary_field) {
-      super(name, { fillable: false, required: false });
+   constructor(name: string = config.data.default_primary_field, cfg?: PrimaryFieldConfig) {
+      super(name, { fillable: false, required: false, ...cfg });
    }
 
    override isRequired(): boolean {
@@ -30,18 +34,34 @@ export class PrimaryField<Required extends true | false = false> extends Field<
    }
 
    protected getSchema() {
-      return baseFieldConfigSchema;
+      return primaryFieldConfigSchema;
+   }
+
+   get format() {
+      return this.config.format ?? "integer";
+   }
+
+   get fieldType() {
+      return this.format === "integer" ? "integer" : "text";
    }
 
    override schema() {
       return Object.freeze({
-         type: "integer",
+         type: this.fieldType,
          name: this.name,
          primary: true,
          nullable: false,
       });
    }
 
+   getNewValue(): any {
+      if (this.format === "uuid") {
+         return uuidv7();
+      }
+
+      return undefined;
+   }
+
    override async transformPersist(value: any): Promise<number> {
       throw new Error("PrimaryField: This function should not be called");
    }
@@ -51,11 +71,12 @@ export class PrimaryField<Required extends true | false = false> extends Field<
    }
 
    override toType(): TFieldTSType {
+      const type = this.format === "integer" ? "number" : "string";
       return {
          ...super.toType(),
          required: true,
          import: [{ package: "kysely", name: "Generated" }],
-         type: "Generated<number>",
+         type: `Generated<${type}>`,
       };
    }
 }
diff --git a/app/src/data/relations/EntityRelation.ts b/app/src/data/relations/EntityRelation.ts
index bf0d8e6..35cef59 100644
--- a/app/src/data/relations/EntityRelation.ts
+++ b/app/src/data/relations/EntityRelation.ts
@@ -9,6 +9,7 @@ import {
 import type { RepoQuery } from "../server/query";
 import type { RelationType } from "./relation-types";
 import * as tbbox from "@sinclair/typebox";
+import type { PrimaryFieldType } from "core";
 const { Type } = tbbox;
 
 const directions = ["source", "target"] as const;
@@ -72,7 +73,7 @@ export abstract class EntityRelation<
       reference: string,
    ): KyselyQueryBuilder;
 
-   getReferenceQuery(entity: Entity, id: number, reference: string): Partial<RepoQuery> {
+   getReferenceQuery(entity: Entity, id: PrimaryFieldType, reference: string): Partial<RepoQuery> {
       return {};
    }
 
diff --git a/app/src/data/relations/RelationField.ts b/app/src/data/relations/RelationField.ts
index 0623987..67be187 100644
--- a/app/src/data/relations/RelationField.ts
+++ b/app/src/data/relations/RelationField.ts
@@ -1,6 +1,6 @@
 import { type Static, StringEnum } from "core/utils";
 import type { EntityManager } from "../entities";
-import { Field, baseFieldConfigSchema } from "../fields";
+import { Field, baseFieldConfigSchema, primaryFieldTypes } from "../fields";
 import type { EntityRelation } from "./EntityRelation";
 import type { EntityRelationAnchor } from "./EntityRelationAnchor";
 import * as tbbox from "@sinclair/typebox";
@@ -15,6 +15,7 @@ export const relationFieldConfigSchema = Type.Composite([
       reference: Type.String(),
       target: Type.String(), // @todo: potentially has to be an instance!
       target_field: Type.Optional(Type.String({ default: "id" })),
+      target_field_type: Type.Optional(StringEnum(["integer", "text"], { default: "integer" })),
       on_delete: Type.Optional(StringEnum(CASCADES, { default: "set null" })),
    }),
 ]);
@@ -45,6 +46,7 @@ export class RelationField extends Field<RelationFieldConfig> {
          reference: target.reference,
          target: target.entity.name,
          target_field: target.entity.getPrimaryField().name,
+         target_field_type: target.entity.getPrimaryField().fieldType,
       });
    }
 
@@ -63,7 +65,7 @@ export class RelationField extends Field<RelationFieldConfig> {
    override schema() {
       return Object.freeze({
          ...super.schema()!,
-         type: "integer",
+         type: this.config.target_field_type ?? "integer",
          references: `${this.config.target}.${this.config.target_field}`,
          onDelete: this.config.on_delete ?? "set null",
       });
diff --git a/app/src/data/schema/SchemaManager.ts b/app/src/data/schema/SchemaManager.ts
index 7ad1ba1..42c071d 100644
--- a/app/src/data/schema/SchemaManager.ts
+++ b/app/src/data/schema/SchemaManager.ts
@@ -2,6 +2,7 @@ import type { CompiledQuery, TableMetadata } from "kysely";
 import type { IndexMetadata, SchemaResponse } from "../connection/Connection";
 import type { Entity, EntityManager } from "../entities";
 import { PrimaryField } from "../fields";
+import { $console } from "core";
 
 type IntrospectedTable = TableMetadata & {
    indices: IndexMetadata[];
@@ -332,6 +333,7 @@ export class SchemaManager {
 
             if (config.force) {
                try {
+                  $console.info("[SchemaManager]", sql, parameters);
                   await qb.execute();
                } catch (e) {
                   throw new Error(`Failed to execute query: ${sql}: ${(e as any).message}`);
diff --git a/app/src/ui/elements/media/DropzoneContainer.tsx b/app/src/ui/elements/media/DropzoneContainer.tsx
index d31f641..1ecd4f2 100644
--- a/app/src/ui/elements/media/DropzoneContainer.tsx
+++ b/app/src/ui/elements/media/DropzoneContainer.tsx
@@ -1,9 +1,10 @@
 import type { Api } from "bknd/client";
+import type { PrimaryFieldType } from "core";
 import type { RepoQueryIn } from "data";
 import type { MediaFieldSchema } from "media/AppMedia";
 import type { TAppMediaConfig } from "media/media-schema";
 import { useId, useEffect, useRef, useState } from "react";
-import { useApi, useApiInfiniteQuery, useApiQuery, useInvalidate } from "ui/client";
+import { useApi, useApiInfiniteQuery, useApiQuery, useInvalidate } from "bknd/client";
 import { useEvent } from "ui/hooks/use-event";
 import { Dropzone, type DropzoneProps } from "./Dropzone";
 import { mediaItemsToFileStates } from "./helper";
@@ -14,7 +15,7 @@ export type DropzoneContainerProps = {
    infinite?: boolean;
    entity?: {
       name: string;
-      id: number;
+      id: PrimaryFieldType;
       field: string;
    };
    media?: Pick<TAppMediaConfig, "entity_name" | "storage">;
diff --git a/app/src/ui/modules/data/components/EntityForm.tsx b/app/src/ui/modules/data/components/EntityForm.tsx
index 2c7c6a3..50c9feb 100644
--- a/app/src/ui/modules/data/components/EntityForm.tsx
+++ b/app/src/ui/modules/data/components/EntityForm.tsx
@@ -22,6 +22,7 @@ import { EntityRelationalFormField } from "./fields/EntityRelationalFormField";
 import ErrorBoundary from "ui/components/display/ErrorBoundary";
 import { Alert } from "ui/components/display/Alert";
 import { bkndModals } from "ui/modals";
+import type { PrimaryFieldType } from "core";
 
 // simplify react form types 🤦
 export type FormApi = ReactFormExtendedApi<any, any, any, any, any, any, any, any, any, any>;
@@ -30,7 +31,7 @@ export type TFieldApi = FieldApi<any, any, any, any, any, any, any, any, any, an
 
 type EntityFormProps = {
    entity: Entity;
-   entityId?: number;
+   entityId?: PrimaryFieldType;
    data?: EntityData;
    handleSubmit: (e: React.FormEvent<HTMLFormElement>) => void;
    fieldsDisabled: boolean;
@@ -225,7 +226,7 @@ function EntityMediaFormField({
    formApi: FormApi;
    field: MediaField;
    entity: Entity;
-   entityId?: number;
+   entityId?: PrimaryFieldType;
    disabled?: boolean;
 }) {
    if (!entityId) return;
diff --git a/app/src/ui/modules/data/components/schema/create-modal/step.entity.fields.tsx b/app/src/ui/modules/data/components/schema/create-modal/step.entity.fields.tsx
index a9a90e0..141c9ec 100644
--- a/app/src/ui/modules/data/components/schema/create-modal/step.entity.fields.tsx
+++ b/app/src/ui/modules/data/components/schema/create-modal/step.entity.fields.tsx
@@ -11,12 +11,14 @@ import {
    type EntityFieldsFormRef,
 } from "ui/routes/data/forms/entity.fields.form";
 import { ModalBody, ModalFooter, type TCreateModalSchema, useStepContext } from "./CreateModal";
+import { useBkndData } from "ui/client/schema/data/use-bknd-data";
 
 const schema = entitiesSchema;
 type Schema = Static<typeof schema>;
 
 export function StepEntityFields() {
    const { nextStep, stepBack, state, setState } = useStepContext<TCreateModalSchema>();
+   const { config } = useBkndData();
    const entity = state.entities?.create?.[0]!;
    const defaultFields = { id: { type: "primary", name: "id" } } as const;
    const ref = useRef<EntityFieldsFormRef>(null);
@@ -82,6 +84,8 @@ export function StepEntityFields() {
                         ref={ref}
                         fields={initial.fields as any}
                         onChange={updateListener}
+                        defaultPrimaryFormat={config?.default_primary_format}
+                        isNew={true}
                      />
                   </div>
                </div>
diff --git a/app/src/ui/modules/data/components/schema/create-modal/step.entity.tsx b/app/src/ui/modules/data/components/schema/create-modal/step.entity.tsx
index 7824fb1..253fc4f 100644
--- a/app/src/ui/modules/data/components/schema/create-modal/step.entity.tsx
+++ b/app/src/ui/modules/data/components/schema/create-modal/step.entity.tsx
@@ -10,12 +10,13 @@ import {
    entitySchema,
    useStepContext,
 } from "./CreateModal";
+import { MantineSelect } from "ui/components/form/hook-form-mantine/MantineSelect";
 
 export function StepEntity() {
    const focusTrapRef = useFocusTrap();
 
    const { nextStep, stepBack, state, setState } = useStepContext<TCreateModalSchema>();
-   const { register, handleSubmit, formState, watch } = useForm({
+   const { register, handleSubmit, formState, watch, control } = useForm({
       mode: "onTouched",
       resolver: typeboxResolver(entitySchema),
       defaultValues: state.entities?.create?.[0] ?? {},
@@ -56,7 +57,6 @@ export function StepEntity() {
                   label="What's the name of the entity?"
                   description="Use plural form, and all lowercase. It will be used as the database table."
                />
-               {/*<input type="submit" value="submit" />*/}
                <TextInput
                   {...register("config.name")}
                   error={formState.errors.config?.name?.message}
diff --git a/app/src/ui/routes/data/data.$entity.$id.tsx b/app/src/ui/routes/data/data.$entity.$id.tsx
index 64ea2b8..b73c1b5 100644
--- a/app/src/ui/routes/data/data.$entity.$id.tsx
+++ b/app/src/ui/routes/data/data.$entity.$id.tsx
@@ -1,3 +1,4 @@
+import type { PrimaryFieldType } from "core";
 import { ucFirst } from "core/utils";
 import type { Entity, EntityData, EntityRelation } from "data";
 import { Fragment, useState } from "react";
@@ -24,7 +25,7 @@ export function DataEntityUpdate({ params }) {
       return <Message.NotFound description={`Entity "${params.entity}" doesn't exist.`} />;
    }
 
-   const entityId = Number.parseInt(params.id as string);
+   const entityId = params.id as PrimaryFieldType;
    const [error, setError] = useState<string | null>(null);
    const [navigate] = useNavigate();
    useBrowserTitle(["Data", entity.label, `#${entityId}`]);
@@ -202,7 +203,7 @@ function EntityDetailRelations({
    entity,
    relations,
 }: {
-   id: number;
+   id: PrimaryFieldType;
    entity: Entity;
    relations: EntityRelation[];
 }) {
@@ -250,7 +251,7 @@ function EntityDetailInner({
    entity,
    relation,
 }: {
-   id: number;
+   id: PrimaryFieldType;
    entity: Entity;
    relation: EntityRelation;
 }) {
diff --git a/app/src/ui/routes/data/data.schema.$entity.tsx b/app/src/ui/routes/data/data.schema.$entity.tsx
index 0831284..3125a34 100644
--- a/app/src/ui/routes/data/data.schema.$entity.tsx
+++ b/app/src/ui/routes/data/data.schema.$entity.tsx
@@ -148,7 +148,7 @@ export function DataSchemaEntity({ params }) {
 const Fields = ({ entity }: { entity: Entity }) => {
    const [submitting, setSubmitting] = useState(false);
    const [updates, setUpdates] = useState(0);
-   const { actions, $data } = useBkndData();
+   const { actions, $data, config } = useBkndData();
    const [res, setRes] = useState<any>();
    const ref = useRef<EntityFieldsFormRef>(null);
    async function handleUpdate() {
@@ -201,6 +201,8 @@ const Fields = ({ entity }: { entity: Entity }) => {
                         }
                      },
                   }))}
+               defaultPrimaryFormat={config?.default_primary_format}
+               isNew={false}
             />
 
             {isDebug() && (
diff --git a/app/src/ui/routes/data/forms/entity.fields.form.tsx b/app/src/ui/routes/data/forms/entity.fields.form.tsx
index a0ca16c..b0186a6 100644
--- a/app/src/ui/routes/data/forms/entity.fields.form.tsx
+++ b/app/src/ui/routes/data/forms/entity.fields.form.tsx
@@ -28,6 +28,8 @@ import { type TFieldSpec, fieldSpecs } from "ui/modules/data/components/fields-s
 import { dataFieldsUiSchema } from "../../settings/routes/data.settings";
 import * as tbbox from "@sinclair/typebox";
 import { useRoutePathState } from "ui/hooks/use-route-path-state";
+import { MantineSelect } from "ui/components/form/hook-form-mantine/MantineSelect";
+import type { TPrimaryFieldFormat } from "data/fields/PrimaryField";
 const { Type } = tbbox;
 
 const fieldsSchemaObject = originalFieldsSchemaObject;
@@ -65,6 +67,8 @@ export type EntityFieldsFormProps = {
    sortable?: boolean;
    additionalFieldTypes?: (TFieldSpec & { onClick: () => void })[];
    routePattern?: string;
+   defaultPrimaryFormat?: TPrimaryFieldFormat;
+   isNew?: boolean;
 };
 
 export type EntityFieldsFormRef = {
@@ -77,7 +81,7 @@ export type EntityFieldsFormRef = {
 
 export const EntityFieldsForm = forwardRef<EntityFieldsFormRef, EntityFieldsFormProps>(
    function EntityFieldsForm(
-      { fields: _fields, sortable, additionalFieldTypes, routePattern, ...props },
+      { fields: _fields, sortable, additionalFieldTypes, routePattern, isNew, ...props },
       ref,
    ) {
       const entityFields = Object.entries(_fields).map(([name, field]) => ({
@@ -172,6 +176,10 @@ export const EntityFieldsForm = forwardRef<EntityFieldsFormRef, EntityFieldsForm
                                  remove={remove}
                                  dnd={dnd}
                                  routePattern={routePattern}
+                                 primary={{
+                                    defaultFormat: props.defaultPrimaryFormat,
+                                    editable: isNew,
+                                 }}
                               />
                            )}
                         />
@@ -186,6 +194,10 @@ export const EntityFieldsForm = forwardRef<EntityFieldsFormRef, EntityFieldsForm
                                  errors={errors}
                                  remove={remove}
                                  routePattern={routePattern}
+                                 primary={{
+                                    defaultFormat: props.defaultPrimaryFormat,
+                                    editable: isNew,
+                                 }}
                               />
                            ))}
                         </div>
@@ -281,6 +293,7 @@ function EntityField({
    errors,
    dnd,
    routePattern,
+   primary,
 }: {
    field: FieldArrayWithId<TFieldsFormSchema, "fields", "id">;
    index: number;
@@ -292,6 +305,10 @@ function EntityField({
    errors: any;
    dnd?: SortableItemProps;
    routePattern?: string;
+   primary?: {
+      defaultFormat?: TPrimaryFieldFormat;
+      editable?: boolean;
+   };
 }) {
    const prefix = `fields.${index}.field` as const;
    const type = field.field.type;
@@ -363,15 +380,29 @@ function EntityField({
                   </div>
                )}
                <div className="flex-col gap-1 hidden md:flex">
-                  <span className="text-xs text-primary/50 leading-none">Required</span>
                   {is_primary ? (
-                     <Switch size="sm" defaultChecked disabled />
+                     <>
+                        <MantineSelect
+                           data={["integer", "uuid"]}
+                           defaultValue={primary?.defaultFormat}
+                           disabled={!primary?.editable}
+                           placeholder="Select format"
+                           name={`${prefix}.config.format`}
+                           allowDeselect={false}
+                           control={control}
+                           size="xs"
+                           className="w-20"
+                        />
+                     </>
                   ) : (
-                     <MantineSwitch
-                        size="sm"
-                        name={`${prefix}.config.required`}
-                        control={control}
-                     />
+                     <>
+                        <span className="text-xs text-primary/50 leading-none">Required</span>
+                        <MantineSwitch
+                           size="sm"
+                           name={`${prefix}.config.required`}
+                           control={control}
+                        />
+                     </>
                   )}
                </div>
             </div>
diff --git a/app/tsconfig.json b/app/tsconfig.json
index 8b845ec..c4e2739 100644
--- a/app/tsconfig.json
+++ b/app/tsconfig.json
@@ -30,7 +30,14 @@
     "baseUrl": ".",
     "outDir": "./dist/types",
     "paths": {
-      "*": ["./src/*"]
+      "*": ["./src/*"],
+      "bknd": ["./src/index.ts"],
+      "bknd/core": ["./src/core/index.ts"],
+      "bknd/adapter": ["./src/adapter/index.ts"],
+      "bknd/client": ["./src/ui/client/index.ts"],
+      "bknd/data": ["./src/data/index.ts"],
+      "bknd/media": ["./src/media/index.ts"],
+      "bknd/auth": ["./src/auth/index.ts"]
     }
   },
   "include": [
diff --git a/bun.lock b/bun.lock
index 9744812..e0e754d 100644
--- a/bun.lock
+++ b/bun.lock
@@ -27,7 +27,7 @@
     },
     "app": {
       "name": "bknd",
-      "version": "0.12.0",
+      "version": "0.13.0",
       "bin": "./dist/cli/index.js",
       "dependencies": {
         "@cfworker/json-schema": "^4.1.1",
@@ -56,6 +56,7 @@
         "object-path-immutable": "^4.1.2",
         "radix-ui": "^1.1.3",
         "swr": "^2.3.3",
+        "uuid": "^11.1.0",
       },
       "devDependencies": {
         "@aws-sdk/client-s3": "^3.758.0",
@@ -84,7 +85,7 @@
         "dotenv": "^16.4.7",
         "jotai": "^2.12.2",
         "jsdom": "^26.0.0",
-        "jsonv-ts": "^0.0.14-alpha.6",
+        "jsonv-ts": "^0.1.0",
         "kysely-d1": "^0.3.0",
         "open": "^10.1.0",
         "openapi-types": "^12.1.3",
@@ -2521,7 +2522,7 @@
 
     "jsonpointer": ["jsonpointer@5.0.1", "", {}, "sha512-p/nXbhSEcu3pZRdkW1OfJhpsVtW1gd4Wa1fnQc9YLiTfAjn0312eMKimbdIQzuZl9aa9xUGaRlP9T/CJE/ditQ=="],
 
-    "jsonv-ts": ["jsonv-ts@0.0.14-alpha.6", "", { "peerDependencies": { "typescript": "^5.0.0" } }, "sha512-pwMpjEbNtyq8Xi6QBXuQ8dOZm7WQAEwvCPu3vVf9b3aU2KRHW+cfTPqO53U01YYdjWSSRkqaTKcLSiYdfwBYRA=="],
+    "jsonv-ts": ["jsonv-ts@0.1.0", "", { "peerDependencies": { "typescript": "^5.0.0" } }, "sha512-wJ+79o49MNie2Xk9w1hPN8ozjqemVWXOfWUTdioLui/SeGDC7C+QKXTDxsmUaIay86lorkjb3CCGo6JDKbyTZQ=="],
 
     "jsonwebtoken": ["jsonwebtoken@9.0.2", "", { "dependencies": { "jws": "^3.2.2", "lodash.includes": "^4.3.0", "lodash.isboolean": "^3.0.3", "lodash.isinteger": "^4.0.4", "lodash.isnumber": "^3.0.3", "lodash.isplainobject": "^4.0.6", "lodash.isstring": "^4.0.1", "lodash.once": "^4.0.0", "ms": "^2.1.1", "semver": "^7.5.4" } }, "sha512-PRp66vJ865SSqOlgqS8hujT5U4AOgMfhrwYIuIhfKaoSCZcirrmASQr8CX7cUg+RMih+hgznrjp99o+W4pJLHQ=="],
 
@@ -3603,7 +3604,7 @@
 
     "utils-merge": ["utils-merge@1.0.1", "", {}, "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="],
 
-    "uuid": ["uuid@8.3.2", "", { "bin": { "uuid": "dist/bin/uuid" } }, "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg=="],
+    "uuid": ["uuid@11.1.0", "", { "bin": { "uuid": "dist/esm/bin/uuid" } }, "sha512-0/A9rDy9P7cJ+8w1c9WD9V//9Wj15Ce2MPz8Ri6032usz+NfePxx5AcN3bN+r6ZL6jEo066/yNYB3tn4pQEx+A=="],
 
     "v8-compile-cache": ["v8-compile-cache@2.4.0", "", {}, "sha512-ocyWc3bAHBB/guyqJQVI5o4BZkPhznPYUG2ea80Gond/BgNWpap8TOmLSeeQG7bnh2KMISxskdADG59j7zruhw=="],
 
@@ -3853,6 +3854,8 @@
 
     "@bundled-es-modules/tough-cookie/tough-cookie": ["tough-cookie@4.1.4", "", { "dependencies": { "psl": "^1.1.33", "punycode": "^2.1.1", "universalify": "^0.2.0", "url-parse": "^1.5.3" } }, "sha512-Loo5UUvLD9ScZ6jh8beX1T6sO1w2/MpCRpEP7V280GKMVUQ0Jzar2U3UJPsrdbziLEMMhu3Ujnq//rhiFuIeag=="],
 
+    "@cypress/request/uuid": ["uuid@8.3.2", "", { "bin": { "uuid": "dist/bin/uuid" } }, "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg=="],
+
     "@emnapi/runtime/tslib": ["tslib@2.8.1", "", {}, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
 
     "@inquirer/core/cli-width": ["cli-width@4.1.0", "", {}, "sha512-ouuZd4/dm2Sw5Gmqy6bGyNNNe1qt9RpmxveLSO7KcgsTnU7RXfsw+/bukWGo1abgBiMAic068rclZsO4IWmmxQ=="],