diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorController.java b/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorController.java
index 011db6a2..391f7a2d 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorController.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorController.java
@@ -1,5 +1,6 @@
 package net.hostsharing.hsadminng.hs.office.debitor;
 
+import io.micrometer.core.annotation.Timed;
 import net.hostsharing.hsadminng.context.Context;
 import net.hostsharing.hsadminng.hs.office.generated.api.v1.api.HsOfficeDebitorsApi;
 import net.hostsharing.hsadminng.hs.office.generated.api.v1.model.HsOfficeDebitorInsertResource;
@@ -51,6 +52,7 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
 
     @Override
     @Transactional(readOnly = true)
+    @Timed("app.debitors.api.getListOfDebitors")
     public ResponseEntity<List<HsOfficeDebitorResource>> getListOfDebitors(
             final String currentSubject,
             final String assumedRoles,
@@ -68,6 +70,7 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
 
     @Override
     @Transactional
+    @Timed("app.debitors.api.postNewDebitor")
     public ResponseEntity<HsOfficeDebitorResource> postNewDebitor(
             String currentSubject,
             String assumedRoles,
@@ -115,6 +118,7 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
 
     @Override
     @Transactional(readOnly = true)
+    @Timed("app.debitors.api.getSingleDebitorByUuid")
     public ResponseEntity<HsOfficeDebitorResource> getSingleDebitorByUuid(
             final String currentSubject,
             final String assumedRoles,
@@ -131,6 +135,7 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
 
     @Override
     @Transactional
+    @Timed("app.debitors.api.deleteDebitorByUuid")
     public ResponseEntity<Void> deleteDebitorByUuid(
             final String currentSubject,
             final String assumedRoles,
@@ -147,6 +152,7 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
 
     @Override
     @Transactional
+    @Timed("app.debitors.api.patchDebitor")
     public ResponseEntity<HsOfficeDebitorResource> patchDebitor(
             final String currentSubject,
             final String assumedRoles,
diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepository.java b/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepository.java
index 30dabb59..3eb1835e 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepository.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepository.java
@@ -1,5 +1,6 @@
 package net.hostsharing.hsadminng.hs.office.debitor;
 
+import io.micrometer.core.annotation.Timed;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.Repository;
 
@@ -9,6 +10,7 @@ import java.util.UUID;
 
 public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEntity, UUID> {
 
+    @Timed("app.debitors.repo.findByUuid")
     Optional<HsOfficeDebitorEntity> findByUuid(UUID id);
 
     @Query("""
@@ -19,7 +21,8 @@ public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEnt
                 WHERE partner.partnerNumber = :partnerNumber
                   AND debitor.debitorNumberSuffix = :debitorNumberSuffix
             """)
-     List<HsOfficeDebitorEntity> findDebitorByDebitorNumber(int partnerNumber, String debitorNumberSuffix);
+    @Timed("app.debitors.repo.findDebitorByDebitorNumber")
+    List<HsOfficeDebitorEntity> findDebitorByDebitorNumber(int partnerNumber, String debitorNumberSuffix);
 
     default List<HsOfficeDebitorEntity> findDebitorByDebitorNumber(int debitorNumber) {
         final var partnerNumber = debitorNumber / 100;
@@ -46,11 +49,15 @@ public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEnt
                     OR person.givenName like concat(cast(:name as text), '%')
                     OR contact.caption like concat(cast(:name as text), '%')
                """)
+    @Timed("app.debitors.repo.findDebitorByOptionalNameLike")
     List<HsOfficeDebitorEntity> findDebitorByOptionalNameLike(String name);
 
+    @Timed("app.debitors.repo.save")
     HsOfficeDebitorEntity save(final HsOfficeDebitorEntity entity);
 
+    @Timed("app.debitors.repo.count")
     long count();
 
+    @Timed("app.debitors.repo.deleteByUuid")
     int deleteByUuid(UUID uuid);
 }
diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerController.java b/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerController.java
index c39dcd49..c2f66594 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerController.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerController.java
@@ -1,5 +1,6 @@
 package net.hostsharing.hsadminng.hs.office.partner;
 
+import io.micrometer.core.annotation.Timed;
 import net.hostsharing.hsadminng.context.Context;
 import net.hostsharing.hsadminng.errors.ReferenceNotFoundException;
 import net.hostsharing.hsadminng.hs.office.contact.HsOfficeContactRealEntity;
@@ -50,7 +51,8 @@ public class HsOfficePartnerController implements HsOfficePartnersApi {
 
     @Override
     @Transactional(readOnly = true)
-    public ResponseEntity<List<HsOfficePartnerResource>> listPartners(
+    @Timed("app.partners.api.getListOfPartners")
+    public ResponseEntity<List<HsOfficePartnerResource>> getListOfPartners(
             final String currentSubject,
             final String assumedRoles,
             final String name) {
@@ -64,7 +66,8 @@ public class HsOfficePartnerController implements HsOfficePartnersApi {
 
     @Override
     @Transactional
-    public ResponseEntity<HsOfficePartnerResource> addPartner(
+    @Timed("app.partners.api.postNewPartner")
+    public ResponseEntity<HsOfficePartnerResource> postNewPartner(
             final String currentSubject,
             final String assumedRoles,
             final HsOfficePartnerInsertResource body) {
@@ -86,7 +89,8 @@ public class HsOfficePartnerController implements HsOfficePartnersApi {
 
     @Override
     @Transactional(readOnly = true)
-    public ResponseEntity<HsOfficePartnerResource> getPartnerByUuid(
+    @Timed("app.partners.api.getSinglePartnerByUuid")
+    public ResponseEntity<HsOfficePartnerResource> getSinglePartnerByUuid(
             final String currentSubject,
             final String assumedRoles,
             final UUID partnerUuid) {
@@ -102,6 +106,7 @@ public class HsOfficePartnerController implements HsOfficePartnersApi {
 
     @Override
     @Transactional
+    @Timed("app.partners.api.deletePartnerByUuid")
     public ResponseEntity<Void> deletePartnerByUuid(
             final String currentSubject,
             final String assumedRoles,
@@ -122,6 +127,7 @@ public class HsOfficePartnerController implements HsOfficePartnersApi {
 
     @Override
     @Transactional
+    @Timed("app.partners.api.patchPartner")
     public ResponseEntity<HsOfficePartnerResource> patchPartner(
             final String currentSubject,
             final String assumedRoles,
diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerRepository.java b/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerRepository.java
index 2c5913a5..24a52568 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerRepository.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerRepository.java
@@ -1,5 +1,6 @@
 package net.hostsharing.hsadminng.hs.office.partner;
 
+import io.micrometer.core.annotation.Timed;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.Repository;
 
@@ -9,9 +10,11 @@ import java.util.UUID;
 
 public interface HsOfficePartnerRepository extends Repository<HsOfficePartnerEntity, UUID> {
 
+    @Timed("app.partners.repo.findByUuid")
     Optional<HsOfficePartnerEntity> findByUuid(UUID id);
 
-    List<HsOfficePartnerEntity> findAll(); // TODO.impl: move to a repo in test sources
+    @Timed("app.partners.repo.findAll")
+    List<HsOfficePartnerEntity> findAll(); // TODO.refa: move to a repo in test sources
 
     @Query("""
             SELECT partner FROM HsOfficePartnerEntity partner
@@ -25,12 +28,18 @@ public interface HsOfficePartnerRepository extends Repository<HsOfficePartnerEnt
                     OR person.givenName like concat(cast(:name as text), '%')
                     OR person.familyName like concat(cast(:name as text), '%')
                """)
+    @Timed("app.partners.repo.findPartnerByOptionalNameLike")
     List<HsOfficePartnerEntity> findPartnerByOptionalNameLike(String name);
+
+    @Timed("app.partners.repo.findPartnerByPartnerNumber")
     HsOfficePartnerEntity findPartnerByPartnerNumber(Integer partnerNumber);
 
+    @Timed("app.partners.repo.save")
     HsOfficePartnerEntity save(final HsOfficePartnerEntity entity);
 
+    @Timed("app.partners.repo.count")
     long count();
 
+    @Timed("app.partners.repo.deleteByUuid")
     int deleteByUuid(UUID uuid);
 }
diff --git a/src/main/resources/api-definition/hs-office/hs-office-partners-with-uuid.yaml b/src/main/resources/api-definition/hs-office/hs-office-partners-with-uuid.yaml
index e19e6cd2..704a54a1 100644
--- a/src/main/resources/api-definition/hs-office/hs-office-partners-with-uuid.yaml
+++ b/src/main/resources/api-definition/hs-office/hs-office-partners-with-uuid.yaml
@@ -2,7 +2,7 @@ get:
     tags:
         - hs-office-partners
     description: 'Fetch a single business partner by its uuid, if visible for the current subject.'
-    operationId: getPartnerByUuid
+    operationId: getSinglePartnerByUuid
     parameters:
         - $ref: 'auth.yaml#/components/parameters/currentSubject'
         - $ref: 'auth.yaml#/components/parameters/assumedRoles'
diff --git a/src/main/resources/api-definition/hs-office/hs-office-partners.yaml b/src/main/resources/api-definition/hs-office/hs-office-partners.yaml
index 9e97a91d..67df42b3 100644
--- a/src/main/resources/api-definition/hs-office/hs-office-partners.yaml
+++ b/src/main/resources/api-definition/hs-office/hs-office-partners.yaml
@@ -3,7 +3,7 @@ get:
     description: Returns the list of (optionally filtered) business partners which are visible to the current subject or any of it's assumed roles.
     tags:
         - hs-office-partners
-    operationId: listPartners
+    operationId: getListOfPartners
     parameters:
         - $ref: 'auth.yaml#/components/parameters/currentSubject'
         - $ref: 'auth.yaml#/components/parameters/assumedRoles'
@@ -31,7 +31,7 @@ post:
     summary: Adds a new business partner.
     tags:
         - hs-office-partners
-    operationId: addPartner
+    operationId: postNewPartner
     parameters:
         - $ref: 'auth.yaml#/components/parameters/currentSubject'
         - $ref: 'auth.yaml#/components/parameters/assumedRoles'
diff --git a/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerAcceptanceTest.java b/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerAcceptanceTest.java
index 82472faa..5f82a9d3 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerAcceptanceTest.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerAcceptanceTest.java
@@ -58,7 +58,7 @@ class HsOfficePartnerControllerAcceptanceTest extends ContextBasedTestWithCleanu
 
     @Nested
     @Transactional
-    class ListPartners {
+    class GetListOfPartners {
 
         @Test
         void globalAdmin_withoutAssumedRoles_canViewAllPartners_ifNoCriteriaGiven() {
@@ -87,10 +87,10 @@ class HsOfficePartnerControllerAcceptanceTest extends ContextBasedTestWithCleanu
 
     @Nested
     @Transactional
-    class AddPartner {
+    class PostNewPartner {
 
         @Test
-        void globalAdmin_withoutAssumedRole_canAddPartner() {
+        void globalAdmin_withoutAssumedRole_canPostNewPartner() {
 
             context.define("superuser-alex@hostsharing.net");
             final var givenMandantPerson = personRepo.findPersonByOptionalNameLike("Hostsharing eG").stream().findFirst().orElseThrow();
@@ -150,7 +150,7 @@ class HsOfficePartnerControllerAcceptanceTest extends ContextBasedTestWithCleanu
         }
 
         @Test
-        void globalAdmin_canNotAddPartner_ifContactDoesNotExist() {
+        void globalAdmin_canNotPostNewPartner_ifContactDoesNotExist() {
 
             context.define("superuser-alex@hostsharing.net");
             final var givenMandantPerson = personRepo.findPersonByOptionalNameLike("Hostsharing eG").get(0);
@@ -188,7 +188,7 @@ class HsOfficePartnerControllerAcceptanceTest extends ContextBasedTestWithCleanu
         }
 
         @Test
-        void globalAdmin_canNotAddPartner_ifPersonDoesNotExist() {
+        void globalAdmin_canNotPostNewPartner_ifPersonDoesNotExist() {
 
             context.define("superuser-alex@hostsharing.net");
             final var mandantPerson = personRepo.findPersonByOptionalNameLike("Hostsharing eG").get(0);
diff --git a/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerRestTest.java b/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerRestTest.java
index caf1fe6f..31e0786d 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerRestTest.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerRestTest.java
@@ -91,7 +91,7 @@ class HsOfficePartnerControllerRestTest {
     }
 
     @Nested
-    class AddPartner {
+    class PostNewPartner {
 
         @Test
         void respondBadRequest_ifPersonUuidIsInvalid() throws Exception {