diff --git a/src/main/openapi/discovery.yaml b/src/main/openapi/discovery.yaml
index 3f43dc1..49a8a00 100644
--- a/src/main/openapi/discovery.yaml
+++ b/src/main/openapi/discovery.yaml
@@ -25,49 +25,16 @@ servers:
     description: Development server
 paths:
   /api/v1/datasets/search:
-    get:
+    post:
       summary: Searches for packages based on criteria
       operationId: dataset_search
       tags:
         - "dataset-query"
-      parameters:
-        - name: q
-          in: query
-          description: Solr search query
-          required: false
-          schema:
-            type: string
-            default: "*:*"
-        - name: fq
-          in: query
-          description: Filter query to apply
-          required: false
-          schema:
-            type: string
-        - name: sort
-          in: query
-          description: Sorting of search results
-          required: false
-          schema:
-            type: string
-            default: "score desc, metadata_modified desc"
-        - name: rows
-          in: query
-          description: Max number of rows to return
-          required: false
-          schema:
-            type: integer
-            default: 10
-            minimum: 0
-            maximum: 1000
-        - name: start
-          in: query
-          description: Offset in the complete result set
-          required: false
-          schema:
-            type: integer
-            default: 0
-            minimum: 0
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/DatasetSearchQuery"
       responses:
         "200":
           description: A list of datasets matching the search criteria
@@ -125,6 +92,44 @@ components:
           scopes:
             read:datasets: read datasets
   schemas:
+    DatasetSearchQuery:
+      type: object
+      properties:
+        query:
+          type: string
+          title: Solr search query
+        facets:
+          type: array
+          title: Facets
+          items:
+            $ref: "#/components/schemas/DatasetSearchQueryFacet"
+        sort:
+          type: string
+          title: Sorting of search results
+          default: "score desc, metadata_modified desc"
+        rows:
+          type: integer
+          title: Max number of rows to return
+          default: 10
+          minimum: 0
+          maximum: 1000
+        start:
+          type: integer
+          title: Offset in the complete result set
+          default: 0
+          minimum: 0
+    DatasetSearchQueryFacet:
+      type: object
+      properties:
+        facetGroup:
+          type: string
+          title: Facet group
+        facet:
+          type: string
+          title: Facet
+        value:
+          type: string
+          title: Value
     SearchedDataset:
       type: object
       properties: