diff --git a/packages/nextjs/sanity-studio/builder/commands/deref.ts b/packages/nextjs/sanity-studio/builder/commands/deref.ts
index 7ef5f939..441b5ebf 100644
--- a/packages/nextjs/sanity-studio/builder/commands/deref.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/deref.ts
@@ -1,16 +1,16 @@
-import { GroqBuilder } from "../groq-builder";
+import { GroqBuilder, RootConfig } from "../groq-builder";
 import { ExtractRefType } from "../common-types";
 
 declare module "../groq-builder" {
-  export interface GroqBuilder<TSchema, TScope> {
+  export interface GroqBuilder<TScope, TRootConfig extends RootConfig> {
     deref(): TScope extends Array<infer TScopeItem>
-      ? Array<ExtractRefType<TSchema, TScopeItem>>
-      : ExtractRefType<TSchema, TScope>;
+      ? Array<ExtractRefType<TScopeItem, TRootConfig>>
+      : ExtractRefType<TScope, TRootConfig>;
   }
 }
 
 GroqBuilder.implement({
-  deref(this: GroqBuilder<any, any>): any {
+  deref(this: GroqBuilder<any, RootConfig>): any {
     return this.extend("->", null);
   },
 });
diff --git a/packages/nextjs/sanity-studio/builder/commands/field.ts b/packages/nextjs/sanity-studio/builder/commands/field.ts
index 66231e4f..9d99d04a 100644
--- a/packages/nextjs/sanity-studio/builder/commands/field.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/field.ts
@@ -1,10 +1,12 @@
-import { GroqBuilder } from "../groq-builder";
+import { GroqBuilder, RootConfig } from "../groq-builder";
 import { StringKeys } from "../common-types";
 
 declare module "../groq-builder" {
-  export interface GroqBuilder<TSchema, TScope> {
-    field(all: "*"): GroqBuilder<TSchema, TScope>;
-    field<TFieldName extends StringKeys<keyof TScope>>(fieldName: TFieldName): GroqBuilder<TSchema, TScope[TFieldName]>;
+  export interface GroqBuilder<TScope, TRootConfig extends RootConfig> {
+    field(all: "*"): GroqBuilder<TScope, TRootConfig>;
+    field<TFieldName extends StringKeys<keyof TScope>>(
+      fieldName: TFieldName
+    ): GroqBuilder<TScope[TFieldName], TRootConfig>;
   }
 }
 
diff --git a/packages/nextjs/sanity-studio/builder/commands/filter.test.ts b/packages/nextjs/sanity-studio/builder/commands/filter.test.ts
index 5f04ee46..7760223d 100644
--- a/packages/nextjs/sanity-studio/builder/commands/filter.test.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/filter.test.ts
@@ -1,15 +1,33 @@
 import { createGroqBuilder } from "../groq-builder";
-import { SanitySchemaTypes } from "../../sanity-types";
+import { SanitySchemaTypes, SchemaConfig } from "../../sanity-types";
 import { expectType } from "../test-utils/expectType";
 import { ExtractScope } from "../common-types";
-import { SanitySchemaRaw } from "../../sanity.config";
-import { Simplify, SimplifyDeep } from "../type-utils";
 
-const q = createGroqBuilder<SanitySchemaTypes>();
+const q = createGroqBuilder<SchemaConfig>();
 
 describe("filter", () => {
   it("", () => {
-    const res = q.filterByType("flavour");
-    expectType<ExtractScope<typeof res>>().toStrictEqual<SanitySchemaRaw["flavour"]>();
+    const res = q.filter();
+    expectType<typeof res>().toStrictEqual<typeof q>();
+    expect(q).toMatchObject({
+      query: `[]`,
+    });
+  });
+  it("", () => {
+    const res = q.filter(`_type == 'flavour'`);
+    expectType<typeof res>().toStrictEqual<typeof q>();
+    expect(q).toMatchObject({
+      query: `[_type == 'flavour']`,
+    });
+  });
+});
+
+describe("filterByType", () => {
+  it("", () => {
+    const res = q.field("*").filterByType("flavour");
+    expectType<ExtractScope<typeof res>>().toStrictEqual<Array<SanitySchemaTypes["flavour"]>>();
+    expect(q).toMatchObject({
+      query: `*[_type == 'flavour']`,
+    });
   });
 });
diff --git a/packages/nextjs/sanity-studio/builder/commands/filter.ts b/packages/nextjs/sanity-studio/builder/commands/filter.ts
index 86f2123b..a08b9735 100644
--- a/packages/nextjs/sanity-studio/builder/commands/filter.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/filter.ts
@@ -1,16 +1,15 @@
 import { GroqBuilder } from "../groq-builder";
+import { ArrayItem } from "../type-utils";
 
 declare module "../groq-builder" {
-  export interface GroqBuilder<TSchema, TScope> {
-    filter<TScopeNew extends TScope = TScope>(filterString?: string): GroqBuilder<TSchema, TScopeNew>;
-    filterByType<TType extends Extract<MaybeArrayItem<TScope>, { _type: any }>["_type"]>(
+  export interface GroqBuilder<TScope, TRootConfig> {
+    filter<TScopeNew extends TScope = TScope>(filterString?: string): GroqBuilder<TScopeNew, TRootConfig>;
+    filterByType<TType extends Extract<ArrayItem<TScope>, { _type: any }>["_type"]>(
       type: TType
-    ): GroqBuilder<TSchema, Extract<TScope, { type: TType }>>;
+    ): GroqBuilder<Array<Extract<ArrayItem<TScope>, { _type: TType }>>, TRootConfig>;
   }
 }
 
-type MaybeArrayItem<T> = T extends Array<infer TItem> ? TItem : T;
-
 GroqBuilder.implement({
   filter(this: GroqBuilder<any, any>, filterString = "") {
     return this.extend(`[${filterString}]`, null);
diff --git a/packages/nextjs/sanity-studio/builder/commands/grab.test.ts b/packages/nextjs/sanity-studio/builder/commands/grab.test.ts
index 3ada391f..a114499b 100644
--- a/packages/nextjs/sanity-studio/builder/commands/grab.test.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/grab.test.ts
@@ -1,9 +1,9 @@
 import { createGroqBuilder } from "../groq-builder";
-import { SanitySchemaTypes } from "../../sanity-types";
+import { SchemaConfig } from "../../sanity-types";
 import { expectType } from "../test-utils/expectType";
 import { ExtractScope } from "../common-types";
 
-const q = createGroqBuilder<SanitySchemaTypes>();
+const q = createGroqBuilder<SchemaConfig>();
 
 describe("grab", () => {
   it("grab one property", () => {
diff --git a/packages/nextjs/sanity-studio/builder/commands/grab.ts b/packages/nextjs/sanity-studio/builder/commands/grab.ts
index 82c84dae..33fd851f 100644
--- a/packages/nextjs/sanity-studio/builder/commands/grab.ts
+++ b/packages/nextjs/sanity-studio/builder/commands/grab.ts
@@ -3,14 +3,14 @@ import { GroqBuilder } from "../groq-builder";
 import { ExpectedTypeError, Parser } from "../common-types";
 
 declare module "../groq-builder" {
-  export interface GroqBuilder<TSchema, TScope> {
+  export interface GroqBuilder<TScope, TRootConfig extends RootConfig> {
     grab<
       TGrab extends {
         [P in keyof TScope & string]?: GrabFieldConfig;
       }
     >(
       grab: TGrab
-    ): GroqBuilder<TSchema, SimplifyDeep<ExtractGrabResult<TScope, TGrab>>>;
+    ): GroqBuilder<SimplifyDeep<ExtractGrabResult<TScope, TGrab>>, TRootConfig>;
   }
 
   export type GrabFieldConfig = true | Parser<any, any> | GroqBuilder<any, any>;
@@ -18,7 +18,7 @@ declare module "../groq-builder" {
   export type ExtractGrabResult<TScope, TGrab> = {
     [P in keyof TGrab /*
      Extract type from GroqBuilder:
-     */]: TGrab[P] extends GroqBuilder<infer TSchema, infer TValue>
+     */]: TGrab[P] extends GroqBuilder<infer TValue, infer TRootConfig>
       ? TValue
       : /* Extract type from 'true': */
       TGrab[P] extends boolean
diff --git a/packages/nextjs/sanity-studio/builder/common-types.ts b/packages/nextjs/sanity-studio/builder/common-types.ts
index bb7aea75..3a1d0ed3 100644
--- a/packages/nextjs/sanity-studio/builder/common-types.ts
+++ b/packages/nextjs/sanity-studio/builder/common-types.ts
@@ -1,6 +1,4 @@
-import { GroqBuilder } from "./groq-builder";
-
-export declare const _referenced: unique symbol;
+import { GroqBuilder, RootConfig } from "./groq-builder";
 
 /**
  * A generic "parser" which can take any input and output a parsed type.
@@ -8,17 +6,19 @@ export declare const _referenced: unique symbol;
  */
 export type Parser<TInput, TOutput> = { parse(input: TInput): TOutput };
 
-export type RefType<TType> = {
-  [_referenced]: TType;
+export type RefType<referencedSymbol extends symbol, TType> = {
+  [P in referencedSymbol]: TType;
 };
 
-export type ExtractRefType<TSchema, TScope> = TScope extends RefType<infer TType>
-  ? Get<TSchema, TType>
-  : ExpectError<{
-      Error: "Expected the object to be a reference type";
-      Expected: RefType<keyof TSchema>;
-      Actual: TScope;
-    }>;
+export type ExtractRefType<TScope, TRootConfig extends RootConfig> =
+  //
+  TScope extends RefType<TRootConfig["referenced"], infer TType>
+    ? Get<TRootConfig["TSchema"], TType>
+    : ExpectError<{
+        Error: "Expected the object to be a reference type";
+        Expected: RefType<TRootConfig["referenced"], keyof TRootConfig["TSchema"]>;
+        Actual: TScope;
+      }>;
 
 export type Get<TObj, TKey> = TKey extends keyof TObj
   ? TObj[TKey]
@@ -33,8 +33,8 @@ export type ExpectError<TError extends { Error: string; Expected: any; Actual: a
 export type StringKeys<T> = Exclude<T, symbol | number>;
 
 export type ExtractScope<TGroqBuilder extends GroqBuilder<any, any>> = TGroqBuilder extends GroqBuilder<
-  any,
-  infer TScope
+  infer TScope,
+  infer TRootConfig
 >
   ? TScope
   : never;
diff --git a/packages/nextjs/sanity-studio/builder/groq-builder.test.ts b/packages/nextjs/sanity-studio/builder/groq-builder.test.ts
index 8b25444e..1c6ae650 100644
--- a/packages/nextjs/sanity-studio/builder/groq-builder.test.ts
+++ b/packages/nextjs/sanity-studio/builder/groq-builder.test.ts
@@ -1,6 +1,6 @@
 import { createGroqBuilder } from "./groq-builder";
-import { SanitySchemaTypes } from "../sanity-types";
-const q = createGroqBuilder<SanitySchemaTypes>();
+import { SchemaConfig } from "../sanity-types";
+const q = createGroqBuilder<SchemaConfig>();
 
 describe("filterByType", () => {
   it("", () => {
diff --git a/packages/nextjs/sanity-studio/builder/groq-builder.ts b/packages/nextjs/sanity-studio/builder/groq-builder.ts
index b598f303..31f93c47 100644
--- a/packages/nextjs/sanity-studio/builder/groq-builder.ts
+++ b/packages/nextjs/sanity-studio/builder/groq-builder.ts
@@ -3,12 +3,15 @@ import { Parser } from "./common-types";
 import "./commands";
 import { SimplifyDeep } from "./type-utils";
 
-export function createGroqBuilder<TSchema>() {
-  type DocumentTypes = SimplifyDeep<TSchema[keyof TSchema]>;
-  return new GroqBuilder<TSchema, Array<DocumentTypes>>("", null, null);
+export type RootConfig = { TSchema: any; referenced: symbol };
+
+export function createGroqBuilder<TRootConfig extends RootConfig>() {
+  type TSchema = TRootConfig["TSchema"];
+  type RootDocumentTypes = Array<SimplifyDeep<TSchema[keyof TSchema]>>;
+  return new GroqBuilder<RootDocumentTypes, TRootConfig>("", null, null);
 }
 
-export class GroqBuilder<TSchema, TScope> {
+export class GroqBuilder<TScope, TRootConfig extends RootConfig> {
   get TScope(): TScope {
     return null as any;
   }
@@ -22,7 +25,7 @@ export class GroqBuilder<TSchema, TScope> {
     Object.assign(GroqBuilder.prototype, methods);
   }
 
-  protected readonly root: GroqBuilder<TSchema, TScope>;
+  protected readonly root: GroqBuilder<TScope, TRootConfig>;
   constructor(
     /**
      *
@@ -42,7 +45,7 @@ export class GroqBuilder<TSchema, TScope> {
    * This method is for chaining:
    */
   protected extend<TScopeNew>(query: string, parser: Parser<any, any> | null) {
-    return new GroqBuilder<TSchema, TScopeNew>(this.query + query, parser, this.root);
+    return new GroqBuilder<TScopeNew, TRootConfig>(this.query + query, parser, this.root);
   }
 
   public async execute(fetchData: (query: string) => Promise<unknown>): Promise<TScope> {
diff --git a/packages/nextjs/sanity-studio/builder/test-utils/expectType.ts b/packages/nextjs/sanity-studio/builder/test-utils/expectType.ts
index 57aec62b..24c212c6 100644
--- a/packages/nextjs/sanity-studio/builder/test-utils/expectType.ts
+++ b/packages/nextjs/sanity-studio/builder/test-utils/expectType.ts
@@ -4,6 +4,7 @@ export type IsEqual<A, B> = (<G>() => G extends A ? 1 : 2) extends <G>() => G ex
 
 //
 declare const RECEIVED: unique symbol;
+declare const EXPECTED: unique symbol;
 
 type Negate<Value extends boolean> = Value extends true ? false : true;
 
@@ -76,6 +77,7 @@ type TypeMatchers<Received, Inverted extends boolean = false> = {
     Expected extends IsEqual<Received, Expected> extends Negate<Inverted>
       ? any
       : {
+          [EXPECTED]: Expected;
           [RECEIVED]: Received;
         }
   >(
diff --git a/packages/nextjs/sanity-studio/builder/type-utils.ts b/packages/nextjs/sanity-studio/builder/type-utils.ts
index 6a35f542..5dfbde46 100644
--- a/packages/nextjs/sanity-studio/builder/type-utils.ts
+++ b/packages/nextjs/sanity-studio/builder/type-utils.ts
@@ -1,3 +1,5 @@
+import { ExpectedTypeError } from "./common-types";
+
 export type Simplify<T> = {
   [KeyType in keyof T]: T[KeyType];
 } & {};
@@ -11,3 +13,8 @@ export type SimplifyDeep<T> = T extends object
 export type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends (k: infer I) => void ? I : never;
 
 export type Override<T, TOverrides> = Omit<T, keyof TOverrides> & TOverrides;
+
+export type MaybeArrayItem<T> = T extends Array<infer TItem> ? TItem : T;
+export type ArrayItem<T> = T extends Array<infer TItem>
+  ? TItem
+  : ExpectedTypeError<{ error: "Expected an array"; expected: Array<any>; actual: T }>;
diff --git a/packages/nextjs/sanity-studio/sanity-types.ts b/packages/nextjs/sanity-studio/sanity-types.ts
index b1c8d096..ae1413a4 100644
--- a/packages/nextjs/sanity-studio/sanity-types.ts
+++ b/packages/nextjs/sanity-studio/sanity-types.ts
@@ -1,6 +1,9 @@
 import { SanitySchemaRaw } from "./sanity.config";
 // import { SimplifyDeep } from "./builder/type-utils";
+import { _referenced } from "@sanity-typed/types";
 
 /** Typescript type of all types! */
 // export type SanitySchemaTypes = SimplifyDeep<SanitySchemaRaw>;
 export type SanitySchemaTypes = SanitySchemaRaw;
+
+export type SchemaConfig = { TSchema: SanitySchemaRaw; referenced: typeof _referenced };