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+---
+id: c684a1ea-bdb6-4e4b-9416-e50e471221a0
+type: insight
+title: "Gap: Claude CLI not installed on CT 300 claude-runner (Tier 2 broken)"
+tags: [ct300, claude-runner, claude-cli, gap, tier2, server-diagnostics, headless-claude, insight]
+importance: 0.7
+confidence: 0.8
+created: "2026-03-01T14:16:43.877297+00:00"
+updated: "2026-03-01T14:16:43.877297+00:00"
+---
+
+# Gap: Claude CLI Not Installed on CT 300 claude-runner
+
+## Discovery
+During investigation of CT 300, found that **Claude CLI is not installed** despite CT 300 being the designated Claude runner LXC.
+
+## Verification
+- `which claude` returns nothing
+- No npm or node installation found on the container
+
+## Impact
+- **Tier 1** health checks (health_check.py, pure Python) work fine — unaffected
+- **Tier 2** escalation (client.py triggering Claude for deeper diagnosis) is **completely non-functional**
+- N8N can trigger Tier 1 but any exit code 2 (escalate) cannot proceed further
+
+## Resolution Path
+To fix Tier 2, install on CT 300:
+1. Node.js + npm
+2. Claude CLI (`npm install -g @anthropic-ai/claude-code` or equivalent)
+3. Authenticate Claude CLI with API key
+
+## Status
+Open gap as of 2026-03-01. Not yet resolved.