diff --git a/README.md b/README.md
index 4ae76c8..1444654 100644
--- a/README.md
+++ b/README.md
@@ -1552,7 +1552,7 @@ Returns concept scheme suggestions.
 Currently the same as `/voc/suggest` with parameter `format=jskos`.
 
 ### GET /data
-Returns data for a certain URI or URIs. Can return concept schemes, concepts, concordances, mappings, and annotations.
+Returns data for a certain URI or URIs. Can return concept schemes, concepts, concordances, mappings, and annotations. This endpoint does not offer pagination via `limit` and `offset`. It will always return all results. Furthermore, there is no certain order to the result set (but it should be consistent across requests). If a certain type of data requires authentication and the user is not authenticated, that type of data will not be returned.
 
 **Note:** As of version 2.0, this endpoint was adjusted to return all types of items that are available in the database, instead of just concepts and concept schemes. The additional parameters, apart from `uri`, were also removed. For the previous behavior (only without returning concept schemes), see [GET /concepts](#get-concepts).
 
@@ -1560,6 +1560,8 @@ Returns data for a certain URI or URIs. Can return concept schemes, concepts, co
 
   `uri=[uri]` URIs for concepts or concept schemes separated by `|`
 
+  `properties=[list]` with `[list]` being a comma-separated list of properties (currently supporting `ancestors`, `narrower`, and `annotations`)
+
 * **Success Response**
 
   JSON array of [JSKOS Items]
diff --git a/routes/data.js b/routes/data.js
index 18656c2..9de41d2 100644
--- a/routes/data.js
+++ b/routes/data.js
@@ -1,5 +1,5 @@
 import express from "express"
-import { conceptService } from "../services/concepts.js"
+import { dataService } from "../services/data.js"
 import * as utils from "../utils/index.js"
 import * as auth from "../utils/auth.js"
 
@@ -11,9 +11,7 @@ router.get(
   auth.optional,
   utils.supportDownloadFormats([]),
   utils.wrappers.async(async (req) => {
-    return await conceptService.getDetails(req.query)
+    return await dataService.getData(req)
   }),
-  utils.addPaginationHeaders,
-  utils.adjust,
   utils.returnJSON,
 )
diff --git a/services/data.js b/services/data.js
new file mode 100644
index 0000000..ee51041
--- /dev/null
+++ b/services/data.js
@@ -0,0 +1,23 @@
+import { adjust } from "../utils/index.js"
+import { byType as models } from "../models/index.js"
+
+export class DataService {
+  async getData(req) {
+    const uris = req.query.uri?.split("|") ?? []
+    return [].concat(...await Promise.all(Object.keys(models).map(async type => {
+      // Don't return data the user is not authorized to read
+      if (!req.isAuthorizedFor({ type: `${type}s`, action: "read" })) {
+        return []
+      }
+      const model = models[type]
+      const results = await model.find({ $or: [
+        { uri: { $in: uris } },
+        { identifier: { $in: uris } },
+      ] }).lean()
+      // Return adjusted data (needs to be done separately for each data type)
+      return adjust.data({ req, data: results, type: `${type}s` })
+    })))
+  }
+}
+
+export const dataService = new DataService()
diff --git a/services/index.js b/services/index.js
index 75afb8c..eabc1a2 100644
--- a/services/index.js
+++ b/services/index.js
@@ -3,6 +3,7 @@ import { conceptService } from "./concepts.js"
 import { concordanceService } from "./concordances.js"
 import { mappingService } from "./mappings.js"
 import { schemeService } from "./schemes.js"
+import { dataService } from "./data.js"
 import { statusService } from "./status.js"
 import { validateService } from "./validate.js"
 
@@ -12,6 +13,7 @@ export {
   concordanceService,
   mappingService,
   schemeService,
+  dataService,
   statusService,
   validateService,
 }