diff --git a/app/__test__/app/repro.spec.ts b/app/__test__/app/repro.spec.ts
index 0d025b9..c76d55f 100644
--- a/app/__test__/app/repro.spec.ts
+++ b/app/__test__/app/repro.spec.ts
@@ -70,4 +70,34 @@ describe("repros", async () => {
 
       expect(app.em.entities.map((e) => e.name)).toEqual(["media", "test"]);
    });
+
+   test.only("verify inversedBy", async () => {
+      const schema = proto.em(
+         {
+            products: proto.entity("products", {
+               title: proto.text()
+            }),
+            product_likes: proto.entity("product_likes", {
+               created_at: proto.date()
+            }),
+            users: proto.entity("users", {})
+         },
+         (fns, schema) => {
+            fns.relation(schema.product_likes).manyToOne(schema.products, { inversedBy: "likes" });
+            fns.relation(schema.product_likes).manyToOne(schema.users);
+         }
+      );
+      const app = createApp({ initialConfig: { data: schema.toJSON() } });
+      await app.build();
+
+      const info = (await (await app.server.request("/api/data/info/products")).json()) as any;
+
+      expect(info.fields).toEqual(["id", "title"]);
+      expect(info.relations.listable).toEqual([
+         {
+            entity: "product_likes",
+            ref: "likes"
+         }
+      ]);
+   });
 });
diff --git a/app/src/data/api/DataApi.ts b/app/src/data/api/DataApi.ts
index 2861403..abb710b 100644
--- a/app/src/data/api/DataApi.ts
+++ b/app/src/data/api/DataApi.ts
@@ -1,10 +1,10 @@
 import type { DB } from "core";
-import type { EntityData, RepoQuery, RepoQueryIn, RepositoryResponse } from "data";
+import type { EntityData, RepoQueryIn, RepositoryResponse } from "data";
 import { type BaseModuleApiOptions, ModuleApi, type PrimaryFieldType } from "modules";
 
 export type DataApiOptions = BaseModuleApiOptions & {
    queryLengthLimit: number;
-   defaultQuery: Partial<RepoQuery>;
+   defaultQuery: Partial<RepoQueryIn>;
 };
 
 export class DataApi extends ModuleApi<DataApiOptions> {
@@ -78,7 +78,7 @@ export class DataApi extends ModuleApi<DataApiOptions> {
       return this.delete<RepositoryResponse<Data>>(["entity", entity as any, id]);
    }
 
-   count<E extends keyof DB | string>(entity: E, where: RepoQuery["where"] = {}) {
+   count<E extends keyof DB | string>(entity: E, where: RepoQueryIn["where"] = {}) {
       return this.post<RepositoryResponse<{ entity: E; count: number }>>(
          ["entity", entity as any, "fn", "count"],
          where
diff --git a/app/src/data/api/DataController.ts b/app/src/data/api/DataController.ts
index bd78f68..1a44912 100644
--- a/app/src/data/api/DataController.ts
+++ b/app/src/data/api/DataController.ts
@@ -165,6 +165,34 @@ export class DataController extends Controller {
       // entity endpoints
       hono.route("/entity", this.getEntityRoutes());
 
+      /**
+       * Info endpoints
+       */
+      hono.get("/info/:entity", async (c) => {
+         const { entity } = c.req.param();
+         if (!this.entityExists(entity)) {
+            return c.notFound();
+         }
+         const _entity = this.em.entity(entity);
+         const fields = _entity.fields.map((f) => f.name);
+         const $rels = (r: any) =>
+            r.map((r: any) => ({
+               entity: r.other(_entity).entity.name,
+               ref: r.other(_entity).reference
+            }));
+
+         return c.json({
+            name: _entity.name,
+            fields,
+            relations: {
+               all: $rels(this.em.relations.relationsOf(_entity)),
+               listable: $rels(this.em.relations.listableRelationsOf(_entity)),
+               source: $rels(this.em.relations.sourceRelationsOf(_entity)),
+               target: $rels(this.em.relations.targetRelationsOf(_entity))
+            }
+         });
+      });
+
       return hono.all("*", (c) => c.notFound());
    }
 
diff --git a/app/src/ui/client/index.ts b/app/src/ui/client/index.ts
index 168d127..0d9711c 100644
--- a/app/src/ui/client/index.ts
+++ b/app/src/ui/client/index.ts
@@ -10,3 +10,4 @@ export * from "./api/use-api";
 export * from "./api/use-entity";
 export { useAuth } from "./schema/auth/use-auth";
 export { Api, type TApiUser, type AuthState, type ApiOptions } from "../../Api";
+export type { RepoQueryIn } from "data";