39ms median · in‑region
Agentic uptime monitoring.
Headless monitor API for AI agents and serverless workflows. Cron-scheduled checks, webhook alerts, zero log storage.
Features
Know before your users do
Checks run every 15 seconds to 5 minutes. Get alerts before customers report outages.
API-first, no dashboard
Create, query, delete monitors via REST. Perfect for AI agents and automation.
Alerts that actually arrive
Webhooks delivered via Relay with automatic retries. Email alerts available.
No monitor limits
Create as many monitors as you need. Pay per check, not per monitor.
API Example
Complete Workflow
# 1. Setup
export SOLENOID_KEY="sm_your_api_key_here"
# 2. Create a monitor
curl -X POST "https://api.solenoid.systems/v1/pulse" \
-H "Authorization: Bearer $SOLENOID_KEY" \
-H "Content-Type: application/json" \
-d '{
"url": "https://your-app.com/health",
"method": "GET",
"interval": 60,
"notify_url": "https://your-app.com/alerts",
"notify_down": true
}'
# Expected response:
# {"success":true,"monitor_id":"mon_abc123...","shard_id":"shard_1"}
# 3. List monitors
curl "https://api.solenoid.systems/v1/pulse" \
-H "Authorization: Bearer $SOLENOID_KEY"
# Expected: {"monitors":[{"monitor_id":"mon_abc123","url":"...","status":"up"}]}Use Cases
AI Agent Health Checks
Let agents monitor their own dependencies. Query /v1/pulse to check service health before making requests.
Multi-Tenant SaaS
Create monitors for each customer's webhook endpoint. Detect delivery failures before customers report them.
Deployment Verification
POST /check after deploys to verify health endpoint responds. No waiting for scheduled check.
Competitor Monitoring
Track competitor API uptime. Get alerts when they're down. Know when to pitch alternatives.
Comparison
| Feature | Solenoid Pulse | Better Uptime | Pingdom |
|---|---|---|---|
| Architecture | Edge-native DO | Multi-region | Multi-region |
| Min Interval | 15s (Scale tier) | 30s | 1m |
| Notifications | Webhooks via Relay | Email/Slack/SMS | Email/Slack/SMS |
| Dashboard | None (headless) | Full dashboard | Full dashboard |
| Pricing | $0.50/1K checks | $25-70/mo | $15-40/mo |
| Best for: | Agentic/API-driven monitoring | Team dashboards | Traditional monitoring |
Feature comparison as of Feb 2026