diff --git a/endpoints/endpoint_schema.sql b/endpoints/endpoint_schema.sql
index 8517c1e7799a323da2341109284b5f2506f887ef..eba0d359744e2165e105035f930d77680e280e22 100644
--- a/endpoints/endpoint_schema.sql
+++ b/endpoints/endpoint_schema.sql
@@ -34,7 +34,6 @@ DO $__$
         END IF;
 
         CREATE SCHEMA IF NOT EXISTS nfttracker_endpoints AUTHORIZATION nfttracker_owner;
-        CREATE SCHEMA IF NOT EXISTS nfttracker_backend AUTHORIZATION nfttracker_owner;
 
         EXECUTE FORMAT(
                 'create or replace function nfttracker_endpoints.root() returns json as $_$
@@ -45,7 +44,7 @@ DO $__$
 {
   "components": {
     "schemas": {
-      "nfttracker_backend.nft_type": {
+      "nfttracker_endpoints.nft_type": {
         "type": "object",
         "properties": {
           "id": {
@@ -91,7 +90,7 @@ DO $__$
           }
         }
       },
-      "nfttracker_backend.nft_instance": {
+      "nfttracker_endpoints.nft_instance": {
         "type": "object",
         "properties": {
           "id": {
@@ -217,24 +216,29 @@ DO $__$
         ],
         "responses": {
           "200": {
-            "description": "Issued NFT instances of given symbol\n\n* Returns `nfttracker_backend.nft_instance`\n",
+            "description": "Issued NFT instances of given symbol\n\n* Returns `nfttracker_endpoints.nft_instance`\n",
             "content": {
               "application/json": {
                 "schema": {
-                  "$ref": "#/components/schemas/nfttracker_backend.nft_instance"
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/components/schemas/nfttracker_endpoints.nft_instance"
+                  }
                 },
-                "example": {
-                  "id": 1,
-                  "holder": "alice",
-                  "data": "{\"key\": \"value\"}",
-                  "tags": [
-                    "item",
-                    "collectible"
-                  ],
-                  "soulbound": false,
-                  "created_at": "2025-08-22T12:00:00",
-                  "updated_at": "2025-08-22T12:00:00"
-                }
+                "example": [
+                  {
+                    "id": 1,
+                    "holder": "alice",
+                    "data": "{\"key\": \"value\"}",
+                    "tags": [
+                      "item",
+                      "collectible"
+                    ],
+                    "soulbound": false,
+                    "created_at": "2025-08-22T12:00:00",
+                    "updated_at": "2025-08-22T12:00:00"
+                  }
+                ]
               }
             }
           },
@@ -254,22 +258,27 @@ DO $__$
         "operationId": "nfttracker_endpoints.get_nft_types",
         "responses": {
           "200": {
-            "description": "Registered NFT types\n\n* Returns `nfttracker_backend.nft_type`\n",
+            "description": "Registered NFT types\n\n* Returns `nfttracker_endpoints.nft_type`\n",
             "content": {
               "application/json": {
                 "schema": {
-                  "$ref": "#/components/schemas/nfttracker_backend.nft_type"
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/components/schemas/nfttracker_endpoints.nft_type"
+                  }
                 },
-                "example": {
-                  "id": 1,
-                  "creator": "alice",
-                  "owner": "bob",
-                  "symbol": "TEST",
-                  "name": "Test symbol",
-                  "max_count": 10,
-                  "created_at": "2025-08-22T12:00:00",
-                  "updated_at": "2025-08-22T12:00:00"
-                }
+                "example": [
+                  {
+                    "id": 1,
+                    "creator": "alice",
+                    "owner": "bob",
+                    "symbol": "TEST",
+                    "name": "Test symbol",
+                    "max_count": 10,
+                    "created_at": "2025-08-22T12:00:00",
+                    "updated_at": "2025-08-22T12:00:00"
+                  }
+                ]
               }
             }
           }
diff --git a/endpoints/get_nft_instances.sql b/endpoints/get_nft_instances.sql
index f0593ecb7d0a5416a647de18f027e19e8cd3a10f..2b6a820c872f0395b047c9e1e133ef46bae2e25e 100644
--- a/endpoints/get_nft_instances.sql
+++ b/endpoints/get_nft_instances.sql
@@ -1,4 +1,4 @@
-SET ROLE nft_owner;
+SET ROLE nfttracker_owner;
 
 /** openapi:paths
 /nfts/{creator}/{symbol}:
@@ -33,12 +33,14 @@ SET ROLE nft_owner;
         description: |
           Issued NFT instances of given symbol
 
-          * Returns `nfttracker_backend.nft_instance`
+          * Returns `nfttracker_endpoints.nft_instance`
         content:
           application/json:
             schema:
-              $ref: '#/components/schemas/nfttracker_backend.nft_instance'
-            example: {
+              type: array
+              items:
+                $ref: '#/components/schemas/nfttracker_endpoints.nft_instance'
+            example: [{
               "id": 1,
               "holder": "alice",
               "data": "{\"key\": \"value\"}",
@@ -46,7 +48,7 @@ SET ROLE nft_owner;
               "soulbound": false,
               "created_at": "2025-08-22T12:00:00",
               "updated_at": "2025-08-22T12:00:00"
-            }
+            }]
       '404':
         description: |
           creator/symbol combination does not exist
@@ -57,7 +59,7 @@ CREATE OR REPLACE FUNCTION nfttracker_endpoints.get_nft_instances(
     "creator" TEXT,
     "symbol" TEXT
 )
-RETURNS nfttracker_backend.nft_instance 
+RETURNS nfttracker_endpoints.nft_instance[] 
 -- openapi-generated-code-end
 LANGUAGE 'plpgsql' STABLE
 AS
@@ -68,23 +70,25 @@ DECLARE
 BEGIN
   PERFORM set_config('response.headers', '[{"Cache-Control": "public, max-age=2"}]', true);
 
-  RETURN (
-    SELECT ROW(
-      i.id,
-      h.name,
-      i.data,
-      i.tags,
-      i.soulbound,
-      i.created_at,
-      i.updated_at
-    )::nfttracker_backend.nft_instance
-    FROM nfttracker_app.instances AS i
-    INNER JOIN nfttracker_app.types AS t ON i.type_id = t.id
-    LEFT JOIN hafd.accounts AS h ON i.holder = h.id
-    WHERE t.symbol = _symbol
-      AND t.creator = (SELECT id FROM hafd.accounts WHERE name = _creator)
-    ORDER BY t.id
-    LIMIT 1
+  RETURN COALESCE(
+    ARRAY(
+      SELECT ROW(
+        i.id,
+        h.name,
+        i.data,
+        i.tags,
+        i.soulbound,
+        i.created_at,
+        i.updated_at
+      )::nfttracker_endpoints.nft_instance
+      FROM nfttracker_app.instances AS i
+      INNER JOIN nfttracker_app.types AS t ON i.type_id = t.id
+      LEFT JOIN hafd.accounts AS h ON i.holder = h.id
+      WHERE t.symbol = _symbol
+        AND t.creator = (SELECT id FROM hafd.accounts WHERE name = _creator)
+      ORDER BY i.id
+    ),
+    ARRAY[]::nfttracker_endpoints.nft_instance[]
   );
 END
 $$;
diff --git a/endpoints/get_nft_types.sql b/endpoints/get_nft_types.sql
index 6f2883ee591b09bb22b905c8da180bfcd2d2417c..8798f8e9e305427eda0828b78742a03b35c82604 100644
--- a/endpoints/get_nft_types.sql
+++ b/endpoints/get_nft_types.sql
@@ -1,4 +1,4 @@
-SET ROLE nft_owner;
+SET ROLE nfttracker_owner;
 
 /** openapi:paths
 /nfts:
@@ -20,12 +20,14 @@ SET ROLE nft_owner;
         description: |
           Registered NFT types
 
-          * Returns `nfttracker_backend.nft_type`
+          * Returns `nfttracker_endpoints.nft_type`
         content:
           application/json:
             schema:
-              $ref: '#/components/schemas/nfttracker_backend.nft_type'
-            example: {
+              type: array
+              items:
+                $ref: '#/components/schemas/nfttracker_endpoints.nft_type'
+            example: [{
               "id": 1,
               "creator": "alice",
               "owner": "bob",
@@ -34,12 +36,12 @@ SET ROLE nft_owner;
               "max_count": 10,
               "created_at": "2025-08-22T12:00:00",
               "updated_at": "2025-08-22T12:00:00"
-            }
+            }]
  */
 -- openapi-generated-code-begin
 DROP FUNCTION IF EXISTS nfttracker_endpoints.get_nft_types;
 CREATE OR REPLACE FUNCTION nfttracker_endpoints.get_nft_types()
-RETURNS nfttracker_backend.nft_type 
+RETURNS nfttracker_endpoints.nft_type[] 
 -- openapi-generated-code-end
 LANGUAGE 'plpgsql' STABLE
 AS
@@ -47,26 +49,28 @@ $$
 BEGIN
   PERFORM set_config('response.headers', '[{"Cache-Control": "public, max-age=2"}]', true);
 
-  RETURN (
-    SELECT ROW(
-      t.id,
-      c.name,
-      o.name,
-      t.symbol,
-      t.name,
-      t.max_count,
-      t.created_at,
-      t.updated_at,
-      ARRAY_AGG(DISTINCT a.name) FILTER (WHERE a.name IS NOT NULL)
-    )::nfttracker_backend.nft_type
-    FROM nfttracker_app.types AS t
-    LEFT JOIN nfttracker_app.authorized_issuers AS ai ON t.id = ai.type_id
-    LEFT JOIN hafd.accounts AS a ON ai.account_id = a.id
-    LEFT JOIN hafd.accounts AS c ON t.creator = c.id
-    LEFT JOIN hafd.accounts AS o ON t.owner = o.id
-    GROUP BY t.id, c.name, o.name, t.symbol, t.name, t.max_count, t.created_at, t.updated_at
-    ORDER BY t.id
-    LIMIT 1
+  RETURN COALESCE(
+    ARRAY(
+      SELECT ROW(
+        t.id,
+        c.name,
+        o.name,
+        t.symbol,
+        t.name,
+        t.max_count,
+        t.created_at,
+        t.updated_at,
+        ARRAY_AGG(DISTINCT a.name) FILTER (WHERE a.name IS NOT NULL)
+      )::nfttracker_endpoints.nft_type
+      FROM nfttracker_app.types AS t
+      LEFT JOIN nfttracker_app.authorized_issuers AS ai ON t.id = ai.type_id
+      LEFT JOIN hafd.accounts AS a ON ai.account_id = a.id
+      LEFT JOIN hafd.accounts AS c ON t.creator = c.id
+      LEFT JOIN hafd.accounts AS o ON t.owner = o.id
+      GROUP BY t.id, c.name, o.name, t.symbol, t.name, t.max_count, t.created_at, t.updated_at
+      ORDER BY t.id
+    ),
+    ARRAY[]::nfttracker_endpoints.nft_type[]
   );
 END
 $$;
diff --git a/endpoints/types/nft_instance.sql b/endpoints/types/nft_instance.sql
index ece8954ef343c55bc8aa77ec1602c2f274b7928d..01c1c796e7d67ec619b8e1ce2801edf144210fab 100644
--- a/endpoints/types/nft_instance.sql
+++ b/endpoints/types/nft_instance.sql
@@ -1,5 +1,5 @@
 /** openapi:components:schemas
-nfttracker_backend.nft_instance:
+nfttracker_endpoints.nft_instance:
   type: object
   properties:
     id:
@@ -30,8 +30,8 @@ nfttracker_backend.nft_instance:
       description: the timestamp this instance was last modified
 */
 -- openapi-generated-code-begin
-DROP TYPE IF EXISTS nfttracker_backend.nft_instance CASCADE;
-CREATE TYPE nfttracker_backend.nft_instance AS (
+DROP TYPE IF EXISTS nfttracker_endpoints.nft_instance CASCADE;
+CREATE TYPE nfttracker_endpoints.nft_instance AS (
     "id" INT,
     "holder" TEXT,
     "data" TEXT,
diff --git a/endpoints/types/nft_type.sql b/endpoints/types/nft_type.sql
index 976292864caa5365e9c49bb23efcd674f3018073..2445ceb936ad53878a460ae4f14cc5d91135d7bd 100644
--- a/endpoints/types/nft_type.sql
+++ b/endpoints/types/nft_type.sql
@@ -1,5 +1,5 @@
 /** openapi:components:schemas
-nfttracker_backend.nft_type:
+nfttracker_endpoints.nft_type:
   type: object
   properties:
     id:
@@ -35,8 +35,8 @@ nfttracker_backend.nft_type:
       description: list of accounts that can issue instance of this NFT type
 */
 -- openapi-generated-code-begin
-DROP TYPE IF EXISTS nfttracker_backend.nft_type CASCADE;
-CREATE TYPE nfttracker_backend.nft_type AS (
+DROP TYPE IF EXISTS nfttracker_endpoints.nft_type CASCADE;
+CREATE TYPE nfttracker_endpoints.nft_type AS (
     "id" INT,
     "creator" TEXT,
     "owner" TEXT,
diff --git a/scripts/install_app.sh b/scripts/install_app.sh
index c99d0dc8c29b14fce614ac99eb4fd5bdc2edcc20..a876a4bada655df2391a738c3fea9b9210e9e42b 100755
--- a/scripts/install_app.sh
+++ b/scripts/install_app.sh
@@ -12,6 +12,7 @@ OPTIONS:
     --postgres-port=PORT                  PostgreSQL port (default: 5432)
     --postgres-user=USERNAME              PostgreSQL user name (default: haf_admin)
     --postgres-url=URL                    PostgreSQL URL (if set, overrides three previous options, empty by default)
+    --swagger-url=URL                     Server URL for OpenAPI documentation (default: localhost)
     --help,-h,-?                          Displays this help message
 EOF
 }
@@ -21,6 +22,7 @@ POSTGRES_HOST=${POSTGRES_HOST:-"localhost"}
 POSTGRES_PORT=${POSTGRES_PORT:-5432}
 POSTGRES_URL=${POSTGRES_URL:-""}
 NFTTRACKER_SCHEMA=${NFTTRACKER_SCHEMA:-"nfttracker_app"}
+SWAGGER_URL=${SWAGGER_URL:-"localhost"}
 
 while [ $# -gt 0 ]; do
   case "$1" in
@@ -39,6 +41,9 @@ while [ $# -gt 0 ]; do
     --schema=*)
         NFTTRACKER_SCHEMA="${1#*=}"
         ;;
+    --swagger-url=*)
+        SWAGGER_URL="${1#*=}"
+        ;;
     --help|-h|-?)
         print_help
         exit 0
@@ -66,9 +71,15 @@ psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../db/nft_actions.s
 psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../db/main_loop.sql"
 
 echo "Installing API endpoints..."
+# Install type definitions first
+psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/types/nft_type.sql"
+psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/types/nft_instance.sql"
+
 # Install endpoint schema and functions
-psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/endpoint_schema.sql"
+psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on -c "SET custom.swagger_url = '$SWAGGER_URL';" -f "$SCRIPTPATH/../endpoints/endpoint_schema.sql"
 psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/get_version.sql"
+psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/get_nft_types.sql"
+psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -f "$SCRIPTPATH/../endpoints/get_nft_instances.sql"
 
 echo "Granting permissions..."
 psql "$POSTGRES_ACCESS" -v ON_ERROR_STOP=on  -c "SET ROLE nfttracker_owner; GRANT USAGE ON SCHEMA ${NFTTRACKER_SCHEMA} to nfttracker_user;"