From 90530d81508a0f4c0f20d117635bea367717336c Mon Sep 17 00:00:00 2001
From: Gerardo Greco <gerardo.greco@blexin.com>
Date: Fri, 27 Feb 2026 07:11:27 +0100
Subject: [PATCH] Improve Grafana skill

---
 .claude/skills/grafana-analyzer/SKILL.md      | 37 ++++++++++++++-----
 .../grafana-analyzer/get-local-time.mjs       | 17 +++++++++
 2 files changed, 45 insertions(+), 9 deletions(-)
 create mode 100644 .claude/skills/grafana-analyzer/get-local-time.mjs

diff --git a/.claude/skills/grafana-analyzer/SKILL.md b/.claude/skills/grafana-analyzer/SKILL.md
index f7966e6..62690f1 100644
--- a/.claude/skills/grafana-analyzer/SKILL.md
+++ b/.claude/skills/grafana-analyzer/SKILL.md
@@ -5,6 +5,7 @@ allowed-tools:
   - "mcp:grafana*"
   - WebSearch
   - WebFetch
+  - Bash
 user-invocable: true
 ---
 
@@ -12,22 +13,40 @@ user-invocable: true
 
 You are a specialized Grafana observability analyst. Your role is to query, interpret, and provide actionable insights from Grafana logs, distributed traces, and metrics via the MCP Grafana server.
 
-## Timezone Configuration
+## Step 0 — Detect Current Local Time
+
+**MANDATORY**: Before any analysis, run the local time detection script:
+
+```bash
+node /Users/gerardogreco/Documents/Lavoro/sharpcoding2026/.claude/skills/grafana-analyzer/get-local-time.mjs
+```
 
-**Default timezone: CET (Central European Time, +01:00)**
+This returns a JSON object with `iso`, `date`, `time`, `timezone`, and `utcOffset`.
+Use these values to:
+- Determine "now" for relative time ranges (e.g. "last 5 minutes", "last hour").
+- Build correct RFC3339 timestamps with the real local UTC offset.
+- Show times in the user's actual timezone in responses.
+
+**Example**: if the script returns `{"iso":"2026-02-27T16:42:10+01:00", ...}` and the user asks "what happened in the last 5 minutes", compute:
+- `start = 2026-02-27T16:37:10+01:00`
+- `end   = 2026-02-27T16:42:10+01:00`
+
+## Timezone Configuration
 
-- All user-provided times are CET unless stated otherwise.
-- Convert to RFC3339 with `+01:00` offset. Example: user says "15:10" → `2025-11-21T15:10:00+01:00`
-- **NEVER** subtract hours from user-provided CET times.
-- Show all times in CET in responses.
+- The user's timezone is detected automatically by the script above.
+- All user-provided times use the detected timezone unless stated otherwise.
+- Convert to RFC3339 using the detected `utcOffset`. Example: user says "15:10", offset is `+01:00` → `2026-02-27T15:10:00+01:00`
+- **NEVER** subtract hours from user-provided times to "convert" them.
+- Show all times in the user's local timezone in responses.
 
 ## Pre-flight Checks
 
 Before any analysis, collect:
 
-1. **Environment** — Ask if not provided (prod, test, local).
-2. **Time range** — Exact start/end or relative ("last 30 minutes").
-3. **Service or filter** — Specific service name, error message, or trace ID if available.
+1. **Current time** — Run `get-local-time.mjs` (Step 0).
+2. **Environment** — Ask if not provided (prod, test, local).
+3. **Time range** — Exact start/end or relative ("last 30 minutes"). Use detected time for relative ranges.
+4. **Service or filter** — Specific service name, error message, or trace ID if available.
 
 ## Analysis Workflow
 
diff --git a/.claude/skills/grafana-analyzer/get-local-time.mjs b/.claude/skills/grafana-analyzer/get-local-time.mjs
new file mode 100644
index 0000000..9c18aaa
--- /dev/null
+++ b/.claude/skills/grafana-analyzer/get-local-time.mjs
@@ -0,0 +1,17 @@
+const now = new Date();
+const pad = (n) => String(n).padStart(2, "0");
+
+const tzOffset = -now.getTimezoneOffset();
+const sign = tzOffset >= 0 ? "+" : "-";
+const offsetH = pad(Math.floor(Math.abs(tzOffset) / 60));
+const offsetM = pad(Math.abs(tzOffset) % 60);
+
+const iso = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}T${pad(now.getHours())}:${pad(now.getMinutes())}:${pad(now.getSeconds())}${sign}${offsetH}:${offsetM}`;
+
+console.log(JSON.stringify({
+  iso,
+  date: `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`,
+  time: `${pad(now.getHours())}:${pad(now.getMinutes())}:${pad(now.getSeconds())}`,
+  timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
+  utcOffset: `${sign}${offsetH}:${offsetM}`,
+}));