diff --git a/packages/core-types/src/request.ts b/packages/core-types/src/request.ts
index 559e4e5ffa1..8d7b7dbe64e 100644
--- a/packages/core-types/src/request.ts
+++ b/packages/core-types/src/request.ts
@@ -250,13 +250,53 @@ type Request = {
 
 export type ImmutableHeaders = Headers & { clone?(): Headers; toJSON(): [string, string][] };
 
-/**
- * Extends JavaScript's native {@link Request} object with additional
- * properties specific to the RequestManager's capabilities.
- *
- * @typedoc
- */
-export type RequestInfo<T = unknown, RT = unknown> = Request & {
+export type UntypedRequestInfo = Request & {
+  /**
+   * If provided, used instead of the AbortController auto-configured for each request by the RequestManager
+   *
+   * @typedoc
+   */
+  controller?: AbortController;
+
+  /**
+   * @see {@link CacheOptions}
+   * @typedoc
+   */
+  cacheOptions?: CacheOptions;
+  store?: Store;
+
+  op?: string;
+
+  /**
+   * The identifiers of the primary resources involved in the request
+   * (if any). This may be used by handlers to perform transactional
+   * operations on the store.
+   *
+   * @typedoc
+   */
+  records?: StableRecordIdentifier[];
+
+  disableTestWaiter?: boolean;
+  /**
+   * data that a handler should convert into
+   * the query (GET) or body (POST).
+   *
+   * Note: It is recommended that builders set query params
+   * and body directly in most scenarios.
+   *
+   * @typedoc
+   */
+  data?: Record<string, unknown>;
+  /**
+   * options specifically intended for handlers
+   * to utilize to process the request
+   *
+   * @typedoc
+   */
+  options?: Record<string, unknown>;
+};
+
+export type TypedRequestInfo<T = unknown, RT = unknown> = Request & {
   /**
    * If provided, used instead of the AbortController auto-configured for each request by the RequestManager
    *
@@ -301,9 +341,17 @@ export type RequestInfo<T = unknown, RT = unknown> = Request & {
    */
   options?: Record<string, unknown>;
 
-  [RequestSignature]?: RT;
+  [RequestSignature]: RT;
 };
 
+/**
+ * Extends JavaScript's native {@link Request} object with additional
+ * properties specific to the RequestManager's capabilities.
+ *
+ * @typedoc
+ */
+export type RequestInfo<T = unknown, RT = unknown> = UntypedRequestInfo | TypedRequestInfo<T, RT>;
+
 /**
  * Immutable version of {@link RequestInfo}. This is what is passed to handlers.
  *
@@ -342,3 +390,10 @@ export interface RequestContext {
   setStream(stream: ReadableStream | Promise<ReadableStream | null>): void;
   setResponse(response: Response | ResponseInfo | null): void;
 }
+
+export function withBrand<T, RT>(
+  request: RequestInfo<T>
+): Omit<RequestInfo<T>, typeof RequestSignature> & { [RequestSignature]: RT } {
+  // @ts-expect-error we're just adding the brand
+  return request;
+}
diff --git a/packages/core-types/src/request.type-test.ts b/packages/core-types/src/request.type-test.ts
new file mode 100644
index 00000000000..32d37651cef
--- /dev/null
+++ b/packages/core-types/src/request.type-test.ts
@@ -0,0 +1,31 @@
+import type { TypeFromInstance } from './record';
+import type { TypedRequestInfo } from './request';
+import { withBrand } from './request';
+import type { SingleResourceDataDocument } from './spec/document';
+import type { RequestSignature, Type } from './symbols';
+
+type User = {
+  id: string;
+  type: string;
+  name: string;
+  friends: User[];
+  bestFriend: User;
+  [Type]: 'user';
+};
+
+function exampleFindRecord<T>(
+  type: TypeFromInstance<T>,
+  id: string
+): TypedRequestInfo<T, SingleResourceDataDocument<T>> {
+  return withBrand({
+    url: `/api/${type}/${id}`,
+    method: 'GET',
+    cacheOptions: { backgroundReload: true },
+    op: 'findRecord',
+  });
+}
+
+const a = exampleFindRecord<User>('user', '1');
+function takesUserRequest(userReq: { [RequestSignature]: SingleResourceDataDocument<User> }) {}
+
+takesUserRequest(a);
diff --git a/packages/request-utils/src/index.ts b/packages/request-utils/src/index.ts
index b6129f2c93e..725dc1667ed 100644
--- a/packages/request-utils/src/index.ts
+++ b/packages/request-utils/src/index.ts
@@ -500,6 +500,7 @@ export function sortQueryParams(params: QueryParamsSource, options?: QueryParams
     });
   }
 
+  // TODO unique includes
   if ('include' in dictionaryParams) {
     dictionaryParams.include = handleInclude(dictionaryParams.include as string | string[]);
   }
@@ -560,6 +561,7 @@ export function sortQueryParams(params: QueryParamsSource, options?: QueryParams
  * @return {string} A sorted query params string without the leading `?`
  */
 export function buildQueryParams(params: QueryParamsSource, options?: QueryParamsSerializationOptions): string {
+  // TODO toString encodes commas, we don't want that.
   return sortQueryParams(params, options).toString();
 }
 export interface CacheControlValue {