diff --git a/pact-openapi-2.1.0.yaml b/pact-openapi-2.1.0.yaml
index 1a59d06..1e70344 100644
--- a/pact-openapi-2.1.0.yaml
+++ b/pact-openapi-2.1.0.yaml
@@ -13,6 +13,11 @@ info:
     maintained by the WBCSD PACT project and  intended to be used by organizations 
     that wish to exchange PCF data with other organizations. The specifications 
     are designed to be technology-agnostic. 
+tags:
+- name: footprint
+  description: Synchronous retrieval of footprints
+- name: event
+  description: Asynchronous exchange of footprints
 servers: 
 - url: https://example.com
 paths:
@@ -149,6 +154,7 @@ paths:
         Post an event to the system. The event will be processed by the system 
         and may trigger further actions.
       operationId: post_event
+      tags: [event]
       requestBody:
         content:
           application/json:
diff --git a/pact-openapi-2.2.0.yaml b/pact-openapi-2.2.0.yaml
index aeee8e9..cbf4d24 100644
--- a/pact-openapi-2.2.0.yaml
+++ b/pact-openapi-2.2.0.yaml
@@ -13,6 +13,11 @@ info:
     maintained by the WBCSD PACT project and intended to be used by organizations 
     that wish to exchange PCF data with other organizations. The specifications 
     are designed to be technology-agnostic.
+tags:
+- name: footprint
+  description: Synchronous retrieval of footprints
+- name: event
+  description: Asynchronous exchange of footprints
 servers: 
 - url: https://example.com
 paths:
@@ -149,6 +154,7 @@ paths:
         Post an event to the system. The event will be processed by the system 
         and may trigger further actions.
       operationId: post_event
+      tags: [event]
       requestBody:
         content:
           application/json:
diff --git a/pact-openapi-2.3.0.yaml b/pact-openapi-2.3.0.yaml
index 1b49166..e803d4a 100644
--- a/pact-openapi-2.3.0.yaml
+++ b/pact-openapi-2.3.0.yaml
@@ -13,6 +13,11 @@ info:
     maintained by the WBCSD PACT project and intended to be used by organizations 
     that wish to exchange PCF data with other organizations. The specifications 
     are designed to be technology-agnostic.
+tags:
+- name: footprint
+  description: Synchronous retrieval of footprints
+- name: event
+  description: Asynchronous exchange of footprints
 servers: 
 - url: https://example.com
 paths:
@@ -148,6 +153,7 @@ paths:
         Post an event to the system. The event will be processed by the system 
         and may trigger further actions.
       operationId: post_event
+      tags: [event]
       requestBody:
         content:
           application/json: