diff --git a/.DS_Store b/.DS_Store
index ff3f707..c723b8f 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
new file mode 100644
index 0000000..f91e0d0
--- /dev/null
+++ b/.github/workflows/npm-publish.yml
@@ -0,0 +1,217 @@
+name: NPM Publish
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    paths:
+      - 'djed-sdk/package.json'
+      - 'stablepay-sdk/package.json'
+
+jobs:
+  publish-djed-sdk:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    defaults:
+      run:
+        working-directory: ./djed-sdk
+    permissions:
+      contents: read
+      id-token: write 
+    steps:
+      - uses: actions/checkout@v4
+      
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Check version change
+        id: check
+        run: |
+          PACKAGE_NAME=$(node -p "require('./package.json').name")
+          LOCAL_VERSION=$(node -p "require('./package.json').version")
+          
+          echo "Checking registry for $PACKAGE_NAME..."
+          
+          # Retry loop for npm view to handle network flakes
+          PUBLISHED_VERSION=""
+          for i in {1..3}; do
+            if OUTPUT=$(npm view "$PACKAGE_NAME" version 2>/dev/null); then
+              PUBLISHED_VERSION=$OUTPUT
+              break
+            else
+              # Check if it's a 404 (package doesn't exist)
+              if npm view "$PACKAGE_NAME" version 2>&1 | grep -q "E404"; then
+                echo "Package not found on registry. Assuming new package."
+                PUBLISHED_VERSION="0.0.0"
+                break
+              fi
+              
+              if [ $i -lt 3 ]; then
+                echo "Attempt $i failed. Retrying in 5 seconds..."
+                sleep 5
+              fi
+            fi
+          done
+
+          if [ -z "$PUBLISHED_VERSION" ]; then
+             echo "Failed to retrieve published version after 3 attempts. Assuming 0.0.0 to err on side of attempting publish."
+             PUBLISHED_VERSION="0.0.0"
+          fi
+          
+          echo "Local version: $LOCAL_VERSION"
+          echo "Published version: $PUBLISHED_VERSION"
+          
+          if [ "$LOCAL_VERSION" != "$PUBLISHED_VERSION" ]; then
+            echo "Version changed."
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Version unchanged."
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Install dependencies
+        if: steps.check.outputs.changed == 'true'
+        run: |
+          SUCCESS=false
+          for i in {1..3}; do
+            if npm ci; then
+              SUCCESS=true
+              break
+            else
+              echo "Install failed, retrying in 10 seconds..."
+              sleep 10
+            fi
+          done
+          if [ "$SUCCESS" != "true" ]; then
+            echo "Failed to install dependencies after 3 attempts"
+            exit 1
+          fi
+
+      - name: Build
+        if: steps.check.outputs.changed == 'true'
+        run: npm run build
+
+      - name: Publish to NPM
+        if: steps.check.outputs.changed == 'true'
+        run: |
+          SUCCESS=false
+          for i in {1..3}; do
+            if npm publish; then
+              SUCCESS=true
+              break
+            else
+              echo "Publish failed, retrying in 10 seconds..."
+              sleep 10
+            fi
+          done
+          if [ "$SUCCESS" != "true" ]; then
+            echo "Failed to publish after 3 attempts"
+            exit 1
+          fi
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+  publish-stablepay-sdk:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    defaults:
+      run:
+        working-directory: ./stablepay-sdk
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Check version change
+        id: check
+        run: |
+          PACKAGE_NAME=$(node -p "require('./package.json').name")
+          LOCAL_VERSION=$(node -p "require('./package.json').version")
+          
+          echo "Checking registry for $PACKAGE_NAME..."
+
+          PUBLISHED_VERSION=""
+          for i in {1..3}; do
+            if OUTPUT=$(npm view "$PACKAGE_NAME" version 2>/dev/null); then
+              PUBLISHED_VERSION=$OUTPUT
+              break
+            else
+              if npm view "$PACKAGE_NAME" version 2>&1 | grep -q "E404"; then
+                echo "Package not found on registry. Assuming new package."
+                PUBLISHED_VERSION="0.0.0"
+                break
+              fi
+              
+              if [ $i -lt 3 ]; then
+                echo "Attempt $i failed. Retrying in 5 seconds..."
+                sleep 5
+              fi
+            fi
+          done
+
+          if [ -z "$PUBLISHED_VERSION" ]; then
+             echo "Failed to retrieve published version after 3 attempts. Assuming 0.0.0 to err on side of attempting publish."
+             PUBLISHED_VERSION="0.0.0"
+          fi
+          
+          echo "Local version: $LOCAL_VERSION"
+          echo "Published version: $PUBLISHED_VERSION"
+          
+          if [ "$LOCAL_VERSION" != "$PUBLISHED_VERSION" ]; then
+            echo "Version changed."
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Version unchanged."
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Install dependencies
+        if: steps.check.outputs.changed == 'true'
+        run: |
+          SUCCESS=false
+          for i in {1..3}; do
+            if npm ci; then
+              SUCCESS=true
+              break
+            else
+              echo "Install failed, retrying in 10 seconds..."
+              sleep 10
+            fi
+          done
+          if [ "$SUCCESS" != "true" ]; then
+            echo "Failed to install dependencies after 3 attempts"
+            exit 1
+          fi
+
+      - name: Build
+        if: steps.check.outputs.changed == 'true'
+        run: npm run build
+
+      - name: Publish to NPM
+        if: steps.check.outputs.changed == 'true'
+        run: |
+          SUCCESS=false
+          for i in {1..3}; do
+            if npm publish; then
+              SUCCESS=true
+              break
+            else
+              echo "Publish failed, retrying in 10 seconds..."
+              sleep 10
+            fi
+          done
+          if [ "$SUCCESS" != "true" ]; then
+            echo "Failed to publish after 3 attempts"
+            exit 1
+          fi
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/djed-sdk/package.json b/djed-sdk/package.json
index e6bcdfa..c22dcd0 100644
--- a/djed-sdk/package.json
+++ b/djed-sdk/package.json
@@ -5,6 +5,7 @@
   "main": "dist/umd/index.js",
   "module": "dist/esm/index.js",
   "scripts": {
+    "build": "rollup -c",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],