diff --git a/README.md b/README.md
index a542afd..f278d4d 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,10 @@
 # mineunit-actions
-GitHub actions for mt-mods/mineunit
 
-Executes Lua unit tests with `busted` in `spec` directory with code coverage analysis using `cluacov` and generates badge for coverage.
+Executes Minetest Lua mod unit tests with [`mineunit`](https://github.com/mt-mods/mineunit) in `spec` directory with code coverage analysis generating badges for coverage.
 
 Example badges:
-* ![](https://byob.yarr.is/S-S-X/metatool/metatool-coverage)
-* ![](https://byob.yarr.is/S-S-X/metatool/sharetool-coverage)
+* ![mineunit](https://mineunit-badges.000webhostapp.com/S-S-X/fence_connect/coverage)
+* ![mineunit](https://mineunit-badges.000webhostapp.com/S-S-X/metatool/metatool-coverage)
 
 Examples in projects:
 * https://github.com/S-S-X/metatool
@@ -13,6 +12,8 @@ Examples in projects:
 * https://github.com/mt-mods/technic
 * https://github.com/mt-mods/machine_parts
 
+## Example setup
+
 Example workflow file `.github/workflows/mineunit.yml`:
 ```yaml
 name: mineunit
@@ -24,32 +25,38 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - id: mineunit
-      uses: mt-mods/mineunit-actions@master
-      with:
-        badge-color: "CC9909"
-    - uses: RubbaBoy/BYOB@v1.2.0
+      uses: mt-mods/mineunit-actions@v0.3
       with:
-        NAME: "${{ steps.mineunit.outputs.badge-name }}"
-        LABEL: "${{ steps.mineunit.outputs.badge-label }}"
-        STATUS: "${{ steps.mineunit.outputs.badge-status }}"
-        COLOR: "${{ steps.mineunit.outputs.badge-color }}"
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        badge-secret: ${{ secrets.MineunitBadgesAPIKey }}
 ```
 
-Optional parameters for `mt-mods/mineunit-actions`:
+You need to create secret `MineunitBadgesAPIKey` with valid API key to generate and update badges.
+Optionally you can disable badges by removing `badge-secret` or leaving it empty.
+
+## Mineunit-actions parameters and outputs
+
+#### Optional parameters for `mt-mods/mineunit-actions`:
 
-* **`working-directory`** Working directory for unit tests
-* **`badge-name`** Code coverage badge name
-* **`badge-label`** Code coverage badge label
-* **`badge-color`** Code coverage badge color
-* **`mineunit-version`** Mineunit version
+* **`working-directory`** Working directory for unit tests.
+	*default:* `.`
+* **`badge-name`** Code coverage badge name (unique id).
+    *default:* `coverage`
+* **`badge-label`** Code coverage badge label.
+	*default:* `Test coverage`
+* **`badge-color`** Code coverage badge color.
+    *default:* `99CC09`
+* **`badge-service`** Custom badge service base URL, see https://github.com/S-S-X/mineunit-badges.
+* **`badge-secret`** Badge service API key, no badges generated if empty.
+* **`production-branch`** Production branch is what is used for badge generation.
+	*default:* `master`
+* **`badge-purge-with`** Purge GitHub Camo links in https://github.com/ path, %s substituted for production-branch.
+	*default:* `"[account|organization]/[repository]/blob/%s/README.md"`
+* **`mineunit-version`** Mineunit version.
 
-Outputs:
+#### Outputs that can be used on workflow after Mineunit action completed:
 
-* **`steps.mineunit.outputs.badge-name`** Code coverage badge name waiting for issues/#1
-* **`steps.mineunit.outputs.badge-label`** Code coverage badge label waiting for issues/#1
-* **`steps.mineunit.outputs.badge-status`** Code coverage badge status waiting for issues/#1
-* **`steps.mineunit.outputs.badge-color`** Code coverage badge color waiting for issues/#1
+* **`steps.mineunit.outputs.badge-status`** Generated badge status, right hand side text of badge.
+* **`steps.mineunit.outputs.badge-url`** Generated badge URL.
 * **`steps.mineunit.outputs.mineunit-stdout`** Stdout produced during busted run
 * **`steps.mineunit.outputs.mineunit-spec-missing`** Set to true if no spec files found for busted
 * **`steps.mineunit.outputs.mineunit-report`** Mineunit detailed test report
diff --git a/action.yml b/action.yml
index 39f1256..4765c7d 100644
--- a/action.yml
+++ b/action.yml
@@ -22,24 +22,37 @@ inputs:
     description: "Code coverage badge color"
     required: true
     default: "99CC09"
+
+  badge-service:
+    description: "Badge service base URL"
+    required: true
+    default: "https://mineunit-badges.000webhostapp.com/${{ github.repository }}"
+  badge-secret:
+    description: "Badge service API key"
+    required: false
+
+  production-branch:
+    description: "Production branch is what is used for badge generation"
+    required: true
+    default: master
+
+  badge-purge-with:
+    description: "Purge GitHub Camo links in https://github.com/ path, %s substituted for production-branch"
+    required: true
+    default: "${{ github.repository }}/blob/%s/README.md"
+
   mineunit-version:
     description: "Mineunit version"
     required: false
 
 outputs:
   # Generated or supplied badge properties
-  badge-name:
-    description: "Code coverage badge name waiting for issues/#1"
-    value: ${{ steps.badge-wrapper-actions-issue-1.outputs.badge-name }}
-  badge-label:
-    description: "Code coverage badge label waiting for issues/#1"
-    value: ${{ steps.badge-wrapper-actions-issue-1.outputs.badge-label }}
+  badge-url:
+    description: "Code coverage badge URL"
+    value: "${{ inputs.badge-service }}/${{ inputs.badge-name }}"
   badge-status:
-    description: "Code coverage badge status waiting for issues/#1"
+    description: "Code coverage badge status"
     value: "${{ steps.mineunit-coverage.outputs.total }} in ${{ steps.mineunit-coverage.outputs.files }} files"
-  badge-color:
-    description: "Code coverage badge color waiting for issues/#1"
-    value: ${{ steps.badge-wrapper-actions-issue-1.outputs.badge-color }}
 
   # Mineunit test framework output
   mineunit-stdout:
@@ -122,10 +135,25 @@ runs:
         echo "::set-output name=total::$(tail -n 2 luacov.report.out | grep ^Total | grep -o '[0-9.]\+%$')"
         awk -v p=0 '/^----/{p++;next}p==2{exit}p' luacov.report.out | sort -hrk4 > luacov.report.sum
         echo "::set-output name=files::$(grep -cv '\s0\.00%' luacov.report.sum)/$(wc -l<luacov.report.sum)"
-    - id: badge-wrapper-actions-issue-1
-      name: Input wrapper while waiting for actions in actions feature
+    - name: generate badge
       shell: bash
       run: |
-        echo "::set-output name=badge-name::${{ inputs.badge-name }}"
-        echo "::set-output name=badge-label::${{ inputs.badge-label }}"
-        echo "::set-output name=badge-color::${{ inputs.badge-color }}"
+        BADGEURL='${{ inputs.badge-service }}/${{ inputs.badge-name }}'
+        CAMO_CHECK_URL="$(printf 'https://github.com/${{ inputs.badge-purge-with }}' '${{ inputs.production-branch }}')"
+        CURL=(curl -fsSm 30 -D /dev/stderr --max-redirs 8 --retry-delay 9 --retry 3 --retry-connrefused)
+        CAMO=(grep -o '<img[^>]\+src="https://camo.githubusercontent.com/[^>]*data-canonical-src="'"$BADGEURL"'"[^>]\+>')
+        LINKS=(sed -rn 's/^.*\ssrc="([^"<>]+)".*$/\1/p')
+        echo
+        echo "only-if: [[ '${{ github.event_name }}' == 'push' && '${{ github.ref }}' == 'refs/heads/${{ inputs.production-branch }}' && '${{ inputs.badge-secret }}' =~ ^[^\ ]+$ ]]"
+        [[ '${{ github.event_name }}' == 'push' && '${{ github.ref }}' == 'refs/heads/${{ inputs.production-branch }}' && '${{ inputs.badge-secret }}' =~ ^[^\ ]+$ ]] || exit 0
+        echo
+        data='{"label":"${{ inputs.badge-label }}","color":"${{ inputs.badge-color }}","value":"${{ steps.mineunit-coverage.outputs.total }} in ${{ steps.mineunit-coverage.outputs.files }} files"}'
+        "${CURL[@]}" -H "Content-Type: application/json" -d "$data" "${BADGEURL}/${{ inputs.badge-secret }}"
+        echo "Badge URL: ${BADGEURL}"
+        [[ '${{ inputs.badge-purge-with }}' == '' ]] && exit 0
+        echo "Purging Camo caches based on $CAMO_CHECK_URL links"
+        echo
+        "${CURL[@]}" "$CAMO_CHECK_URL" | "${CAMO[@]}" | "${LINKS[@]}" | sort -u > camo.purge.uri
+        echo "Purging cache for $(wc -l < camo.purge.uri) Camo entries"
+        echo
+        xargs -ra camo.purge.uri "${CURL[@]}" -X PURGE