31ms median · in‑region
Usage metering at the edge.
Track, limit, bill. One API, global latency, zero infrastructure.
Features
Never lose a count
Every increment is durable. No race conditions. No double-counting.
Bill with confidence
Real-time balances mean no disputes. Show customers exactly what they've used.
Prevent overages
Enforce limits in real-time. No surprise invoices for you or your customers.
One key, all products
Stop juggling credentials. Meter, Relay, Gate — same account, same bill.
Try It
Current Balance
1000
API Example
Multi-Tenant Metering Workflow
# 1. Setup
export SOLENOID_KEY="sm_your_api_key_here"
TENANT_ID="customer-456"
# 2. Give tenant 1000 credits
curl -X POST "https://api.solenoid.systems/v1/meter/$TENANT_ID/refill" \
-H "Authorization: Bearer $SOLENOID_KEY" \
-H "Content-Type: application/json" \
-d '{"amount":1000}'
# Response: {"balance":1000,"meter_id":"customer-456"}
# 3. Deduct on API usage
curl -X POST "https://api.solenoid.systems/v1/meter/$TENANT_ID/deduct" \
-H "Authorization: Bearer $SOLENOID_KEY" \
-H "Content-Type: application/json" \
-d '{"amount":5}'
# Response: {"balance":995,"meter_id":"customer-456"}
# 4. Check tenant balance
curl "https://api.solenoid.systems/v1/meter/$TENANT_ID/balance" \
-H "Authorization: Bearer $SOLENOID_KEY"
# Response: {"balance":995,"meter_id":"customer-456"}Use Cases
API Rate Limiting
Track and enforce per-customer API call quotas in real time.
Usage-Based Billing
Meter consumption for pay-as-you-go pricing models.
Credit Systems
Manage prepaid credit balances with atomic operations.
Resource Quotas
Enforce storage, compute, or bandwidth limits per tenant.
Comparison
| Feature | Solenoid Meter | Redis | AWS DynamoDB |
|---|---|---|---|
| Architecture | Durable Objects | Self-hosted/managed | Managed NoSQL |
| Latency | Sub-10ms p99 | 1-5ms local | Single-digit ms |
| Operations | Atomic incr/decr | INCR/DECR | UpdateItem atomic |
| Persistence | Automatic DO state | RDB/AOF snapshots | Automatic |
| Pricing | $0.50/1K checks | $20-200/mo + ops | $1.25/WCU-mo |
| Best for: | Edge metering with guarantees | Full control, self-managed | AWS ecosystem, high scale |
Latency and pricing as of Feb 2026