diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 99b951e..6816f28 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -41,6 +41,31 @@ jobs:
               echo "Expected output 'No changes' but got '$output'" >&2
               exit 1
             fi
+  oasdiff_diff_composed:
+    runs-on: ubuntu-latest
+    name: Test diff action with composed option
+    steps:
+        - name: checkout
+          uses: actions/checkout@v4
+        - name: Running diff action with composed option
+          id: test_composed
+          uses: ./diff
+          with:
+            base: 'specs/glob/base/*.yaml'
+            revision: 'specs/glob/revision/*.yaml'
+            format: 'text'
+            composed: true
+        - name: Test diff action output
+          run: |
+            delimiter=$(cat /proc/sys/kernel/random/uuid | tr -d '-')
+            output=$(cat <<-$delimiter
+            ${{ steps.test_composed.outputs.diff }}
+            $delimiter
+            )
+            if [[ ! "$output" =~ "Deleted Endpoints: 1" ]]; then
+              echo "Expected 'Deleted Endpoints: 1' to be modified in diff, instead got '$output'" >&2
+              exit 1
+            fi
   oasdiff_breaking:
     runs-on: ubuntu-latest
     name: Test breaking changes
@@ -62,9 +87,35 @@ jobs:
           $delimiter
           )
           if [ "$output" != "1 breaking changes: 1 error, 0 warning" ]; then
-            echo "Expected output '6 breaking changes: 2 error, 4 warning' but got '$output'" >&2
+            echo "Expected output '1 breaking changes: 1 error, 0 warning' but got '$output'" >&2
             exit 1
           fi
+  oasdiff_breaking_composed:
+    runs-on: ubuntu-latest
+    name: Test breaking action with composed option
+    steps:
+        - name: checkout
+          uses: actions/checkout@v4
+        - name: Running breaking action with composed option
+          id: test_breaking_composed
+          uses: ./breaking
+          with:
+            base: 'specs/glob/base/*.yaml'
+            revision: 'specs/glob/revision/*.yaml'
+            fail-on-diff: false
+            format: 'text'
+            composed: true
+        - name: Test breaking action output
+          run: |
+            delimiter=$(cat /proc/sys/kernel/random/uuid | tr -d '-')
+            output=$(cat <<-$delimiter
+            ${{ steps.test_breaking_composed.outputs.breaking }}
+            $delimiter
+            )
+            if [[ ! "$output" =~ "1 breaking changes: 1 error, 0 warning" ]]; then
+              echo "Expected '1 breaking changes: 1 error, 0 warning', instead got '$output'" >&2
+              exit 1
+            fi
   oasdiff_breaking_deprecation:
     runs-on: ubuntu-latest
     name: Test breaking changes with deprecation
@@ -105,4 +156,29 @@ jobs:
           if [[  "${output}" != "${expected_output}" ]]; then
             echo "Expected output '20 changes: 2 error, 4 warning, 14 info' but got '${output}'" >&2
             exit 1
-          fi  
+          fi 
+  oasdiff_changelog_composed:
+    runs-on: ubuntu-latest
+    name: Test changelog action with composed option
+    steps:
+        - name: checkout
+          uses: actions/checkout@v4
+        - name: Running changelog action with composed option
+          id: test_changelog_composed
+          uses: ./changelog
+          with:
+            base: 'specs/glob/base/*.yaml'
+            revision: 'specs/glob/revision/*.yaml'
+            format: 'text'
+            composed: true
+        - name: Test changelog action output
+          run: |
+            delimiter=$(cat /proc/sys/kernel/random/uuid | tr -d '-')
+            output=$(cat <<-$delimiter
+            ${{ steps.test_changelog_composed.outputs.changelog }}
+            $delimiter
+            )
+            if [[ ! "$output" =~ "1 changes: 1 error, 0 warning, 0 info" ]]; then
+              echo "Expected '1 changes: 1 error, 0 warning, 0 info', instead got '$output'" >&2
+              exit 1
+            fi
\ No newline at end of file
diff --git a/README.md b/README.md
index 234d57f..5941ce2 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ This action supports additional arguments that are converted to parameters for t
 | --format | format | yaml |
 | --include-path-params | include-path-params | false |
 | --exclude-elements | exclude-elements | '' |
+| --composed                | composed                | false   |
 
 ### Check for breaking API changes, and fail if any are found
 Copy and paste the following snippet into your build .yml file:
@@ -45,6 +46,7 @@ Additional arguments:
 | --deprecation-days-beta   | deprecation-days-beta   | 31      |
 | --deprecation-days-stable | deprecation-days-stable | 180     |
 | --exclude-elements        | exclude-elements        | ''      |
+| --composed                | composed                | false   |
 
 This action delivers a summary of breaking changes, accessible as a GitHub step output named `breaking`.
 
@@ -63,4 +65,5 @@ Additional arguments:
 | CLI | Action input | Default |
 |--------|--------|--------|
 | --include-path-params | include-path-params | false |
-| --exclude-elements    | exclude-elements    | ''    |
\ No newline at end of file
+| --exclude-elements    | exclude-elements    | ''    |
+| --composed            | composed            | false   |
\ No newline at end of file
diff --git a/breaking/action.yml b/breaking/action.yml
index 3a43bee..833f107 100644
--- a/breaking/action.yml
+++ b/breaking/action.yml
@@ -28,6 +28,10 @@ inputs:
     description: 'Exclude certain kinds of changes'
     required: false
     default: ''
+  composed:
+    description: 'Run in composed mode'
+    required: false
+    default: 'false'
 outputs:
   breaking:
     description: 'Output summary of API breaking changes, encompassing both warnings and errors'
@@ -43,3 +47,4 @@ runs:
     - ${{ inputs.deprecation-days-beta }}
     - ${{ inputs.deprecation-days-stable }}
     - ${{ inputs.exclude-elements }}
+    - ${{ inputs.composed }}
diff --git a/breaking/entrypoint.sh b/breaking/entrypoint.sh
index df79af8..18c800f 100755
--- a/breaking/entrypoint.sh
+++ b/breaking/entrypoint.sh
@@ -9,6 +9,7 @@ readonly include_path_params="$5"
 readonly deprecation_days_beta="$6"
 readonly deprecation_days_stable="$7"
 readonly exclude_elements="$8"
+readonly composed="$9"
 
 echo "running oasdiff breaking... base: $base, revision: $revision, fail_on_diff: $fail_on_diff, include_checks: $include_checks, include_path_params: $include_path_params, deprecation_days_beta: $deprecation_days_beta, deprecation_days_stable: $deprecation_days_stable, exclude_elements: $exclude_elements"
 
@@ -32,6 +33,9 @@ fi
 if [ "$exclude_elements" != "" ]; then
     flags="${flags} --exclude-elements ${exclude_elements}"
 fi
+if [ "$composed" = "true" ]; then
+    flags="${flags} -c"
+fi
 echo "flags: $flags"
 
 # *** github action step output ***
diff --git a/changelog/action.yml b/changelog/action.yml
index 6056fa8..c445741 100644
--- a/changelog/action.yml
+++ b/changelog/action.yml
@@ -15,6 +15,10 @@ inputs:
     description: 'Exclude certain kinds of changes'
     required: false
     default: ''
+  composed:
+    description: 'Run in composed mode'
+    required: false
+    default: 'false'
 outputs:
   changelog:
     description: 'Output summary of API changelog'
@@ -26,3 +30,4 @@ runs:
     - ${{ inputs.revision }}
     - ${{ inputs.include-path-params }}
     - ${{ inputs.exclude-elements }}
+    - ${{ inputs.composed }}
diff --git a/changelog/entrypoint.sh b/changelog/entrypoint.sh
index 8a74214..c0139e7 100755
--- a/changelog/entrypoint.sh
+++ b/changelog/entrypoint.sh
@@ -5,6 +5,7 @@ readonly base="$1"
 readonly revision="$2"
 readonly include_path_params="$3"
 readonly exclude_elements="$4"
+readonly composed="$5"
 
 echo "running oasdiff changelog base: $base, revision: $revision, include_path_params: $include_path_params, exclude_elements: $exclude_elements"
 
@@ -16,6 +17,9 @@ fi
 if [ "$exclude_elements" != "" ]; then
     flags="${flags} --exclude-elements ${exclude_elements}"
 fi
+if [ "$composed" = "true" ]; then
+    flags="${flags} -c"
+fi
 echo "flags: $flags"
 
 set -o pipefail
diff --git a/diff/action.yml b/diff/action.yml
index 550a93a..f9bbd65 100644
--- a/diff/action.yml
+++ b/diff/action.yml
@@ -23,6 +23,10 @@ inputs:
     description: 'Exclude certain kinds of changes'
     required: false
     default: ''
+  composed:
+    description: 'Run in composed mode'
+    required: false
+    default: 'false'
 outputs:
   diff:
     description: 'Output summary of API diff'
@@ -36,3 +40,4 @@ runs:
     - ${{ inputs.fail-on-diff }}
     - ${{ inputs.include-path-params }}
     - ${{ inputs.exclude-elements }}
+    - ${{ inputs.composed }}
diff --git a/diff/entrypoint.sh b/diff/entrypoint.sh
index 8d0cd68..fdcb4c1 100755
--- a/diff/entrypoint.sh
+++ b/diff/entrypoint.sh
@@ -7,6 +7,7 @@ readonly format="$3"
 readonly fail_on_diff="$4"
 readonly include_path_params="$5"
 readonly exclude_elements="$6"
+readonly composed="$7"
 
 echo "running oasdiff diff base: $base, revision: $revision, format: $format, fail_on_diff: $fail_on_diff, include_path_params: $include_path_params, exclude_elements: $exclude_elements"
 
@@ -24,6 +25,9 @@ fi
 if [ "$exclude_elements" != "" ]; then
     flags="${flags} --exclude-elements ${exclude_elements}"
 fi
+if [ "$composed" = "true" ]; then
+    flags="${flags} -c"
+fi
 echo "flags: $flags"
 
 # *** github action step output ***
diff --git a/specs/glob/base/base.yaml b/specs/glob/base/base.yaml
new file mode 100644
index 0000000..acdeb1f
--- /dev/null
+++ b/specs/glob/base/base.yaml
@@ -0,0 +1,111 @@
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      type: object
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
\ No newline at end of file
diff --git a/specs/glob/revision/revision-breaking.yaml b/specs/glob/revision/revision-breaking.yaml
new file mode 100644
index 0000000..c9c246d
--- /dev/null
+++ b/specs/glob/revision/revision-breaking.yaml
@@ -0,0 +1,80 @@
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      type: object
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
\ No newline at end of file