diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0e55d81..c4de962 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -85,10 +85,49 @@ jobs:
           source: ${{ matrix.source }}
           verify-attestation: ${{ matrix.verify-attestation }}
 
-      - run: echo '${{ steps.subject.outputs.matrix }}' > actual.json
+      - run: |
+          {
+            echo "{"
+            echo '"constraint": "${{ steps.subject.outputs.constraint }}",'
+            echo '"highest": "${{ steps.subject.outputs.highest }}",'
+            echo '"lowest": "${{ steps.subject.outputs.lowest }}",'
+            echo '"versions": ${{ steps.subject.outputs.versions }}'
+            echo "}"
+          } >> actual.json
 
       - run: diff <(jq --sort-keys . actual.json) <(jq --sort-keys . local-action/testdata/${{ matrix.case }}.${{ matrix.mode }}.golden.json)
 
+  outputs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          path: local-action
+
+      - uses: ./local-action
+        id: subject
+        with:
+          composer-json: local-action/testdata/complex.composer.json
+          mode: minor-only
+          source: offline
+          verify-attestation: false
+
+      - name: Assert constraint output
+        run: exit 1
+        if: steps.subject.outputs.constraint != '^7.3.32 || ^8.1 <=8.1.9'
+
+      - name: Assert versions output
+        run: exit 1
+        if: steps.subject.outputs.versions != toJSON(fromJSON('["7.3","7.4","8.1"]'))
+
+      - name: Assert lowest output
+        run: exit 1
+        if: steps.subject.outputs.lowest != '7.3'
+
+      - name: Assert highest output
+        run: exit 1
+        if: steps.subject.outputs.highest != '8.1'
+
   negative:
     runs-on: ubuntu-latest
     strategy:
@@ -159,6 +198,7 @@ jobs:
   wait-for-all-tests:
     needs:
       - positive
+      - outputs
       - negative
       - missing
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index aa2cc5a..cc2a203 100644
--- a/README.md
+++ b/README.md
@@ -79,36 +79,13 @@ See [action.yml](action.yml) and the underlying script [`typisttech/php-matrix`]
 
 ### Outputs
 
-This action yields **a single output** `matrix` which is a JSON-encoded string of:
-
 | Key | Description | Example |
 | --- | --- | --- |
 | `constraint`  | PHP constraint found in `composer.json` | `^7.3 \|\| ^8.0` |
-| `versions` | Array of all supported PHP versions | In `minor-only` mode, `["7.3", "7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]`<br><br>In `full` mode, `["7.4.998", "7.4.999", "8.4.998", "8.4.999"]` |
+| `versions` | String of an array of all supported PHP versions | In `minor-only` mode, `["7.3", "7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]`<br><br>In `full` mode, `["7.4.998", "7.4.999", "8.4.998", "8.4.999"]` |
 | `lowest` | Lowest supported PHP versions | In `minor-only` mode, `7.3`<br><br>In `full` mode, `7.3.0` |
 | `highest` | Highest supported PHP versions | In `minor-only` mode, `8.4`<br><br>In `full` mode, `8.4.2` |
 
-> [!TIP]
->
-> Use [`fromJSON()`](https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/evaluate-expressions-in-workflows-and-actions#fromjson) and [`toJSON()`](https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/evaluate-expressions-in-workflows-and-actions#tojson) to decode the output.
->
-> ```yaml
-> jobs:
->   php-matrix:
->     runs-on: ubuntu-latest
->     outputs:
->       matrix: ${{ steps.php-matrix.outputs.matrix }}
->       constraint: ${{ fromJSON(steps.php-matrix.outputs.matrix).constraint }}
->       # Use `fromJSON()` when accessing `versions`!
->       versions: ${{ toJSON(fromJSON(steps.php-matrix.outputs.matrix).versions) }}
->       lowest: ${{ fromJSON(steps.php-matrix.outputs.matrix).lowest }}
->       highest: ${{ fromJSON(steps.php-matrix.outputs.matrix).highest }}
->     steps:
->       - uses: actions/checkout@v4
->       - uses: typisttech/php-matrix-action@main
->         id: php-matrix
-> ```
-
 ## Examples
 
 <details open>
@@ -124,7 +101,7 @@ jobs:
   php-matrix:
     runs-on: ubuntu-latest
     outputs:
-      matrix: ${{ steps.php-matrix.outputs.matrix }}
+      versions: ${{ steps.php-matrix.outputs.versions }}
     steps:
       - uses: actions/checkout@v4
       - uses: typisttech/php-matrix-action@v1
@@ -135,7 +112,7 @@ jobs:
     needs: php-matrix
     strategy:
       matrix:
-        php: ${{ fromJSON(needs.php-matrix.outputs.matrix).versions }}
+        php: ${{ fromJSON(needs.php-matrix.outputs.versions) }}
     steps:
       - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
@@ -167,7 +144,7 @@ jobs:
 
       - uses: shivammathur/setup-php@v2
         with:
-          php-version:  ${{ fromJSON(steps.php-matrix.outputs.matrix).lowest }}
+          php-version:  ${{ steps.php-matrix.outputs.lowest }}
 
       - run: composer install
 
@@ -189,8 +166,8 @@ jobs:
   php-matrix:
     runs-on: ubuntu-latest
     outputs:
-      versions: ${{ toJSON(fromJSON(steps.php-matrix.outputs.matrix).versions) }}
-      highest: ${{ fromJSON(steps.php-matrix.outputs.matrix).highest }}
+      versions: ${{ steps.php-matrix.outputs.versions }}
+      highest: ${{ steps.php-matrix.outputs.highest }}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -205,7 +182,7 @@ jobs:
     needs: php-matrix
     strategy:
       matrix:
-        php: ${{ fromJSON(needs.php-matrix.outputs.versions }}
+        php: ${{ fromJSON(needs.php-matrix.outputs.versions) }}
         dependency-versions: [lowest, highest]
         coverage: [none]
         exclude:
diff --git a/action.yml b/action.yml
index 953a02b..d3daafb 100644
--- a/action.yml
+++ b/action.yml
@@ -33,9 +33,18 @@ inputs:
     default: ${{ github.token }}
 
 outputs:
-  matrix:
-    description: The PHP version matrix
-    value: ${{ steps.generate-matrix.outputs.matrix }}
+  constraint:
+    description: The `require.php` constraint found in `composer.json`
+    value: ${{ fromJSON(steps.generate-matrix.outputs.matrix).constraint }}
+  highest:
+    description: Highest supported PHP versions
+    value: ${{ fromJSON(steps.generate-matrix.outputs.matrix).highest }}
+  lowest:
+    description: Lowest supported PHP versions
+    value: ${{ fromJSON(steps.generate-matrix.outputs.matrix).lowest }}
+  versions:
+    description: Array of all supported PHP versions
+    value: ${{ toJSON(fromJSON(steps.generate-matrix.outputs.matrix).versions) }}
 
 runs:
   using: "composite"