diff --git a/docs/api/apiv3/endpoints/groups.apib b/docs/api/apiv3/endpoints/groups.apib
index a7efa985ada..e48a54264c7 100644
--- a/docs/api/apiv3/endpoints/groups.apib
+++ b/docs/api/apiv3/endpoints/groups.apib
@@ -260,7 +260,7 @@ Updates the given group by applying the attributes provided in the body.
                 }
             }
 
-## Delete group [/api/v3/group/{id}]
+## Delete group [/api/v3/groups/{id}]
 
 ## Delete group [DELETE]
 
diff --git a/frontend/src/app/core/setup/global-dynamic-components.const.ts b/frontend/src/app/core/setup/global-dynamic-components.const.ts
index a632899ecbe..28b09c734fc 100644
--- a/frontend/src/app/core/setup/global-dynamic-components.const.ts
+++ b/frontend/src/app/core/setup/global-dynamic-components.const.ts
@@ -135,6 +135,7 @@ import {
   slideToggleSelector
 } from "core-app/shared/components/slide-toggle/slide-toggle.component";
 import { BackupComponent, backupSelector } from "core-app/core/setup/globals/components/admin/backup.component";
+import { DocsComponent, docsSelector } from "core-app/core/setup/globals/components/docs/docs.component";
 import {
   EnterpriseBaseComponent,
   enterpriseBaseSelector,
@@ -220,7 +221,8 @@ export const globalDynamicComponents:OptionalBootstrapDefinition[] = [
   { selector: editableQueryPropsSelector, cls: EditableQueryPropsComponent },
   { selector: slideToggleSelector, cls: SlideToggleComponent },
   { selector: backupSelector, cls: BackupComponent },
-  { selector: opInAppNotificationBellSelector, cls: InAppNotificationBellComponent }
+  { selector: opInAppNotificationBellSelector, cls: InAppNotificationBellComponent },
+  { selector: docsSelector, cls: DocsComponent }
 ];
 
 
diff --git a/frontend/src/app/shared/components/docs/docs.component.html b/frontend/src/app/core/setup/globals/components/docs/docs.component.html
similarity index 100%
rename from frontend/src/app/shared/components/docs/docs.component.html
rename to frontend/src/app/core/setup/globals/components/docs/docs.component.html
diff --git a/frontend/src/app/shared/components/docs/docs.component.sass b/frontend/src/app/core/setup/globals/components/docs/docs.component.sass
similarity index 100%
rename from frontend/src/app/shared/components/docs/docs.component.sass
rename to frontend/src/app/core/setup/globals/components/docs/docs.component.sass
diff --git a/frontend/src/app/shared/components/docs/docs.component.ts b/frontend/src/app/core/setup/globals/components/docs/docs.component.ts
similarity index 100%
rename from frontend/src/app/shared/components/docs/docs.component.ts
rename to frontend/src/app/core/setup/globals/components/docs/docs.component.ts
diff --git a/lib/api/open_api.rb b/lib/api/open_api.rb
index 6b51255a888..9c9de3c1b01 100644
--- a/lib/api/open_api.rb
+++ b/lib/api/open_api.rb
@@ -1,7 +1,63 @@
 module API
   module OpenAPI
-    def self.spec(version: :stable)
-      API::OpenAPI::BlueprintImport.convert version: version
+    extend self
+
+    def spec(version: :stable)
+      spec_path = Rails.application.root.join("docs/api/apiv3/openapi-spec.yml")
+
+      if spec_path.exist?
+        assemble_spec spec_path
+      else
+        API::OpenAPI::BlueprintImport.convert version: version, single_file: true
+      end
+    end
+
+    def assemble_spec(file_path)
+      spec = YAML.load File.read(file_path.to_s)
+
+      substitute_refs(spec, path: file_path.parent, root_path: file_path.parent)
+    end
+
+    def substitute_refs(spec, path:, root_path:, root_spec: spec)
+      if spec.is_a?(Hash)
+        if spec.size == 1 && spec.keys.first == "$ref"
+          ref_path = path.join spec.values.first
+          ref_value = YAML.load File.read(ref_path.to_s)
+
+          resolve_refs ref_value, path: ref_path.parent, root_path: root_path, root_spec: root_spec
+        else
+          spec.map { |k, v| [k, substitute_refs(v, path: path, root_path: root_path, root_spec: root_spec)] }.to_h
+        end
+      elsif spec.is_a?(Array)
+        spec.map { |s| substitute_refs s, path: path, root_path: root_path, root_spec: root_spec }
+      else
+        spec
+      end
+    end
+
+    def resolve_refs(spec, path:, root_path:, root_spec:)
+      if spec.is_a?(Hash)
+        if spec.size == 1 && spec.keys.first == "$ref"
+          ref_path = spec.values.first
+
+          if ref_path.start_with?(".")
+            schema_file = path.join(ref_path).to_s.sub(root_path.to_s, ".")
+            schema_path = path.join(ref_path).parent.to_s.sub(root_path.to_s, "").split("/").drop(1)
+            schema_name = root_spec.dig(*schema_path).find { |k, v| v["$ref"] == schema_file }.first
+            schema_ref = path.join(ref_path).parent.join(schema_name).to_s.sub(root_path.to_s, "#")
+
+            { spec.keys.first => schema_ref }
+          else
+            spec
+          end
+        else
+          spec.map { |k, v| [k, resolve_refs(v, path: path, root_path: root_path, root_spec: root_spec)] }.to_h
+        end
+      elsif spec.is_a?(Array)
+        spec.map { |v| resolve_refs(v, path: path, root_path: root_path, root_spec: root_spec) }
+      else
+        spec
+      end
     end
   end
 end
diff --git a/lib/api/open_api/blueprint_import.rb b/lib/api/open_api/blueprint_import.rb
index fb9561871c7..4978d0fb3aa 100644
--- a/lib/api/open_api/blueprint_import.rb
+++ b/lib/api/open_api/blueprint_import.rb
@@ -21,7 +21,7 @@ module API
         @include_directive_regex ||= /\<\!\-\-\s*include\((.*)\)\s*\-\-\>/
       end
 
-      def convert(version: :stable)
+      def convert(version: :stable, single_file: false)
         input_file = Rails.application.root.join("docs/api/apiv3-doc-#{version}.apib")
         md_file = Tempfile.new("apibp.md").path
         assemble_file input_path: input_file, output_path: md_file
@@ -31,10 +31,119 @@ module API
         add_security! spec
         amend_schemas! spec, apibp: File.read(md_file)
 
+        if !single_file
+          split_up_schemas! spec
+          split_up_paths! spec
+          split_up_tags! spec
+        end
+
         spec
       ensure
         FileUtils.rm_f md_file if File.exist? md_file
       end
+
+      def split_up_schemas!(spec)
+        file_path = Rails.application.root.join "docs/api/apiv3/components/schemas"
+
+        FileUtils.mkdir_p file_path.to_s
+
+        new_schemas = spec["components"]["schemas"].map do |name, content|
+          identifier = name.underscore
+          file_name = "#{identifier}.yml"
+
+          File.open(file_path.join(file_name), "w") do |f|
+            f.write "# Schema: #{name}\n"
+            f.write content.to_yaml
+          end
+
+          [name, { "$ref" => "./components/schemas/#{file_name}"}]
+        end
+
+        spec["components"]["schemas"] = new_schemas.to_h
+      end
+
+      def split_up_tags!(spec)
+        file_path = Rails.application.root.join "docs/api/apiv3/tags"
+
+        FileUtils.mkdir_p file_path.to_s
+
+        new_tags = spec["tags"].map do |value|
+          identifier = value["name"].downcase.gsub("&", "and").gsub(" ", "_")
+          file_name = "#{identifier}.yml"
+
+          File.open(file_path.join(file_name), "w") do |f|
+            f.write value.to_yaml
+          end
+
+          { "$ref" => "./tags/#{file_name}"}
+        end
+
+        spec["tags"] = new_tags
+      end
+
+      def split_up_paths!(spec)
+        file_path = Rails.application.root.join "docs/api/apiv3/paths"
+
+        FileUtils.mkdir_p file_path.to_s
+
+        new_paths = spec["paths"].map do |path, content|
+          segments = path.sub("/api/v3", "").split("/").reject(&:blank?)
+
+          (0..(segments.size - 1)).each do |i|
+            if i > 0 && segments[i].end_with?("id}")
+              before = segments[i - 1]
+              after = before.singularize
+              
+              # certain words like 'news' can't be singularized
+              if before == after
+                segments[i - 1] = "#{before}_item"
+              else
+                segments[i - 1] = after
+              end
+            end
+          end
+          
+          identifier = segments.reject { |s| s.end_with?("id}") }.join("_").presence || "root"
+          file_name = "#{identifier}.yml"
+
+          File.open(file_path.join(file_name), "w") do |f|
+            f.write "# #{path}\n"
+            f.write fix_operation_ids!(fix_references!(content.dup, context: spec)).to_yaml
+          end
+
+          [path, { "$ref" => "./paths/#{file_name}"}]
+        end
+
+        raise "Splitting up into paths failed! Expected same number of paths. " unless new_paths.size == spec["paths"].size
+
+        spec["paths"] = new_paths.to_h
+      end
+
+      def fix_operation_ids!(spec)
+        spec.each do |key, value|
+          if value.is_a? Hash
+            fix_operation_ids! value
+          elsif key == "operationId"
+            spec[key] = spec[key].gsub " ", "_"
+          end
+        end
+
+        spec
+      end
+
+      def fix_references!(spec, context:)
+        spec.each do |key, value|
+          if value.is_a? Hash
+            fix_references! value, context: context
+          elsif value.is_a? Array
+            spec[key] = value.map { |v| v.is_a?(Hash) ? fix_references!(v.dup, context: context) : v }
+          elsif key == "$ref" && value.start_with?("#/components")
+            spec[key] = '.' + context.dig(*(value.split("/").drop(1) + ['$ref']))
+          end
+        end
+
+        spec
+      end
       
       def add_security!(spec)
         spec["components"]["securitySchemes"] = {
@@ -106,7 +215,6 @@ module API
             "href" => {
               "type" => "string",
               "nullable" => true,
-              "format" => "uri",
               "description" => "URL to the referenced resource (might be relative)"
             },
             "title" => {
@@ -273,7 +381,7 @@ module API
 
           link = {}
           value = {
-            "allOf" => [{ "$ref" => "#/components/schemas/Link" }, link]
+            "allOf" => [{ "$ref" => "./link.yml" }, link]
           }
 
           set_description! link, row, desc_index
@@ -351,6 +459,17 @@ module API
 
           add_conditions! value, row, cond_index
 
+          if type == "Formattable"
+            value.delete "type"
+
+            value = {
+              "allOf" => [
+                { "$ref" => "./formattable.yml" },
+                value
+              ]
+            }
+          end
+
           [name, value]
         end
 
diff --git a/lib/tasks/api.rake b/lib/tasks/api.rake
index 1f046fbf52b..1b935d4b260 100644
--- a/lib/tasks/api.rake
+++ b/lib/tasks/api.rake
@@ -49,9 +49,19 @@ namespace :api do
   desc 'Saves the API spec (OAS3.0) to ./docs/api/openproject-apiv3-<branch>.yml'
   task :update_spec, [:branch] => [:environment] do |task, args|
     branch = (args[:branch] || "stable").to_sym
-    spec = API::OpenAPI::BlueprintImport.convert version: branch
+    spec = API::OpenAPI::BlueprintImport.convert version: branch, single_file: false
 
-    File.open(Rails.application.root.join("docs/api/apiv3-oas-#{branch}.yml"), "w") do |f|
+    File.open(Rails.application.root.join("docs/api/apiv3/openapi-spec.yml"), "w") do |f|
+      f.write spec.to_yaml
+    end
+  end
+
+  desc 'Saves the API spec (OAS3.0) to ./docs/api/openproject-apiv3-single.yml'
+  task :assemble_spec, [:branch] => [:environment] do |task, args|
+    branch = (args[:branch] || "stable").to_sym
+    spec = API::OpenAPI.spec
+
+    File.open(Rails.application.root.join("docs/api/apiv3/openapi-spec-single.yml"), "w") do |f|
       f.write spec.to_yaml
     end
   end