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README.md

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+# arcline-uptime
+
+Lightweight uptime monitor for HTTP and TCP endpoints. Polls on a schedule, stores results in SQLite, sends alerts via Discord webhook or email. Includes an embedded web dashboard.
+
+No external services required — runs as a single binary on any Linux server.
+
+## Status
+
+Planned. Not yet started.
+
+## Stack
+
+- Go — single static binary
+- SQLite via `modernc.org/sqlite` (pure Go, no CGO)
+- Config: YAML
+- Alerts: Discord webhook, SMTP email
+
+## Usage
+
+```sh
+arcline-uptime start --config uptime.yaml
+arcline-uptime check --config uptime.yaml --monitor "Main Website"  # one-off check
+```
+
+Dashboard available at `http://localhost:8081` (configurable).
+
+## Config
+
+```yaml
+global:
+  check_interval: 60
+  timeout: 10
+  alert_cooldown: 300
+
+alerts:
+  - type: discord
+    webhook_url: "https://discord.com/api/webhooks/..."
+
+monitors:
+  - name: "Main Website"
+    type: http
+    url: "https://arclineit.com"
+    expected_status: 200
+    contains: "[arcline]"
+
+  - name: "SSH"
+    type: tcp
+    host: "server1.arclineit.com"
+    port: 22
+```
+
+## Dashboard routes
+
+- `/` — current status of all monitors
+- `/history` — response time graph
+- `/metrics` — Prometheus-compatible endpoint (optional)
+
+Protected by basic auth configured in YAML.
+
+See [todo.md](todo.md) for the full task list.