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skills/c4model-c2/output-format.md

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+# C2 Output Format
+
+JSON structure for `c2-containers.json` output file.
+
+## Complete Example
+
+```json
+{
+  "metadata": {
+    "version": "1.0.0",
+    "timestamp": "2025-11-17T20:20:00.000Z",
+    "generated_by": "c2-abstractor",
+    "parent": {
+      "file": "c1-systems.json",
+      "timestamp": "2025-11-17T10:00:00.000Z"
+    }
+  },
+  "containers": [
+    {
+      "id": "ecommerce-spa",
+      "name": "E-Commerce Customer Portal",
+      "type": "spa",
+      "system_id": "ecommerce-system",
+      "technology": {
+        "primary_language": "TypeScript",
+        "framework": "React 18.2.0",
+        "libraries": [
+          {"name": "React Router", "version": "6.14.0", "purpose": "Client-side routing"},
+          {"name": "Redux Toolkit", "version": "1.9.5", "purpose": "State management"}
+        ]
+      },
+      "runtime": {
+        "environment": "browser",
+        "platform": "Modern browsers (Chrome 90+, Firefox 88+, Safari 14+)",
+        "containerized": false
+      },
+      "relations": [
+        {
+          "target": "ecommerce-api",
+          "type": "http-rest",
+          "direction": "outbound",
+          "description": "Fetches product data and submits orders"
+        }
+      ],
+      "observations": [],
+      "metadata": {
+        "repository": "frontend/",
+        "discovered_at": "2025-11-17T20:15:00.000Z"
+      }
+    }
+  ]
+}
+```
+
+## Validation
+
+After generating `c2-containers.json`:
+
+```bash
+# Validate JSON structure
+python ${CLAUDE_PLUGIN_ROOT}/validation/scripts/validate-c2-containers.py c2-containers.json
+
+# Verify timestamps
+python ${CLAUDE_PLUGIN_ROOT}/validation/scripts/check-timestamp.sh c2-containers.json c1-systems.json
+```
+
+## Required Fields
+
+See main [SKILL.md](./SKILL.md#required-fields-checklist) for complete required fields matrix.