diff --git a/claude-agent.yml b/claude-agent.yml
new file mode 100644
index 0000000..db087d5
--- /dev/null
+++ b/claude-agent.yml
@@ -0,0 +1,79 @@
+
+on:
+  workflow_call:
+    inputs:
+      gitea_api_url:
+        description: 'https://git.moujtahid.com/api/v1'
+        required: true
+        type: string
+      trigger_phrase:
+        description: 'Trigger-Phrase (default: @claude)'
+        required: false
+        type: string
+        default: '@claude'
+      timeout_minutes:
+        description: 'Max. Laufzeit in Minuten'
+        required: false
+        type: string
+        default: '30'
+      custom_instructions:
+        description: 'Zusätzliche Instructions – werden an die Standard-Instructions angehängt'
+        required: false
+        type: string
+        default: ''
+    secrets:
+      GITEA_TOKEN:
+        required: true
+      CLAUDE_CODE_OAUTH_TOKEN:
+        required: true
+
+jobs:
+  claude:
+    runs-on: ubuntu-latest
+
+    if: |
+      (github.event_name == 'issues' && contains(github.event.issue.body, '@claude')) ||
+      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude'))
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Build custom instructions
+        id: instructions
+        run: |
+          BASE="Du arbeitest in einer selbst gehosteten Gitea-Instanz.
+          Schreibe Code auf Englisch kommentiert wenn nicht anders angegeben.
+          Erstelle immer einen PR mit einem klaren Titel und einer Beschreibung was geändert wurde.
+          Bei NextJS Projekten verwende shadcn und tanstack-query wenn nicht anders angegeben. 
+          Bei NestJS Projekten verwende drizzle, swagger-ui, API-Keys und cors mit localhost:3000-3005 freigabe wenn nicht anders angegeben."
+
+          EXTRA="${{ inputs.custom_instructions }}"
+
+          if [ -n "$EXTRA" ]; then
+            echo "value<<EOF" >> $GITEA_OUTPUT
+            echo "$BASE" >> $GITEA_OUTPUT
+            echo "" >> $GITEA_OUTPUT
+            echo "$EXTRA" >> $GITEA_OUTPUT
+            echo "EOF" >> $GITEA_OUTPUT
+          else
+            echo "value<<EOF" >> $GITEA_OUTPUT
+            echo "$BASE" >> $GITEA_OUTPUT
+            echo "EOF" >> $GITEA_OUTPUT
+          fi
+
+
+      - name: Run Claude Agent
+        uses: markwylde/claude-code-gitea-action@v1.0.5
+        with:
+          gitea_token: ${{ secrets.GITEA_TOKEN }}
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          gitea_api_url: ${{ inputs.gitea_api_url }}
+          trigger_phrase: ${{ inputs.trigger_phrase }}
+          timeout_minutes: ${{ inputs.timeout_minutes }}
+          claude_git_name: 'Claude@Moujtahid'
+          claude_git_email: 'claude@moujtahid.com'
+          custom_instructions: ${{ steps.instructions.outputs.value }}
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