Fix publish.yml (#17)

Author: mmerrell

.github/workflows/publish.yml

@@ -2,17 +2,26 @@ name: Publish to MCP Registry
 
 on:
   push:
-    branches:
-      - main
-  workflow_dispatch:
+    tags:
+      - 'v*'
 
 jobs:
   publish:
     runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+
     steps:
-      - uses: actions/checkout@v3
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install MCP Publisher
+        run: |
+          curl -L "https://github.com/modelcontextprotocol/registry/releases/download/v1.0.0/mcp-publisher_1.0.0_$(uname -s | tr '[:upper:]' '[:lower:]')_$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/').tar.gz" | tar xz mcp-publisher
+
+      - name: Login to MCP Registry
+        run: ./mcp-publisher login github-oidc
+
       - name: Publish to MCP Registry
-        uses: modelcontextprotocol/publish-action@v1
-        with:
-          registry_token: ${{ secrets.MCP_REGISTRY_TOKEN }}
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+        run: ./mcp-publisher publish