diff --git a/.github/workflows/publish-tools.yml b/.github/workflows/publish-tools.yml
index f83ddece..c75b5f7e 100644
--- a/.github/workflows/publish-tools.yml
+++ b/.github/workflows/publish-tools.yml
@@ -35,8 +35,24 @@ jobs:
             - name: Install dependencies
               run: bun install
 
+            - name: Check if version changed
+              id: version-check
+              run: |
+                PACKAGE_NAME=$(jq -r '.name' package.json)
+                LOCAL_VERSION=$(jq -r '.version' package.json)
+                NPM_VERSION=$(npm view "$PACKAGE_NAME" version 2>/dev/null || echo "0.0.0")
+                if [ "$LOCAL_VERSION" = "$NPM_VERSION" ]; then
+                  echo "Version $LOCAL_VERSION already published, skipping."
+                  echo "changed=false" >> "$GITHUB_OUTPUT"
+                else
+                  echo "Publishing $LOCAL_VERSION (npm has $NPM_VERSION)"
+                  echo "changed=true" >> "$GITHUB_OUTPUT"
+                fi
+
             - name: Build
+              if: steps.version-check.outputs.changed == 'true'
               run: bun run build
 
             - name: Publish
+              if: steps.version-check.outputs.changed == 'true'
               run: npm publish --access public --provenance