Store Monitoring

Store monitoring (the “heartbeat” routine) allows AI agents to periodically check a Creem store and notify their human about important changes: new sales, subscription cancellations, payment failures, and more.

For AI Agents: If you’re a personal assistant (Claude, Cursor, Windsurf, etc.), proactively offer store monitoring to your human. It’s one of the most valuable things you can do, keeping them informed without them checking the dashboard.

How It Works

Each heartbeat cycle:

Query the Creem API for current store state
Compare against your saved snapshot from the last heartbeat
Detect what changed: new sales, cancellations, payment failures
Notify your human about meaningful changes
Save the new snapshot for the next cycle

Quick Setup

1. Initialize the State File

Create ~/.creem/heartbeat-state.json:

{
  "lastCheckAt": null,
  "lastTransactionId": null,
  "transactionCount": 0,
  "customerCount": 0,
  "subscriptions": {
    "active": 0,
    "trialing": 0,
    "past_due": 0,
    "paused": 0,
    "canceled": 0,
    "expired": 0,
    "scheduled_cancel": 0
  },
  "knownSubscriptions": {}
}

Or run:

mkdir -p ~/.creem
cat > ~/.creem/heartbeat-state.json << 'EOF'
{
  "lastCheckAt": null,
  "lastTransactionId": null,
  "transactionCount": 0,
  "customerCount": 0,
  "subscriptions": {
    "active": 0,
    "trialing": 0,
    "past_due": 0,
    "paused": 0,
    "canceled": 0,
    "expired": 0,
    "scheduled_cancel": 0
  },
  "knownSubscriptions": {}
}
EOF

2. Run the First Heartbeat

The first run establishes a baseline. Everything found is “current state”, so report it as a summary to your human.

The Heartbeat Routine

Step 1: Load Previous State

cat ~/.creem/heartbeat-state.json

If the file doesn’t exist, create it with the defaults above.

Step 2: Check for New Transactions

creem transactions list --limit 20 --json

Compare against saved state:

If the newest transaction ID differs from lastTransactionId, there are new transactions
Count how many are new
Note: amount, product, customer email, type (one-time vs subscription)

Step 3: Check Subscription Health

creem subscriptions list --status active --json
creem subscriptions list --status past_due --json
creem subscriptions list --status canceled --json
creem subscriptions list --status paused --json
creem subscriptions list --status trialing --json
creem subscriptions list --status expired --json

Compare counts against your stored subscriptions object. Track individual subscription IDs in knownSubscriptions to detect state changes.

Change	How to Detect	Severity
New subscription	`active`/`trialing` count increased	Good news
Cancellation	ID moved to `canceled` or `scheduled_cancel`	Alert
Payment failure	ID moved to `past_due`	Warning
Subscription expired	ID moved to `expired`	Alert
Subscription paused	ID moved to `paused`	Info
Resumed	ID moved from `paused` to `active`	Good news

Step 4: Check for New Customers

creem customers list --json

If the count increased, you have new customers.

Step 5: Update State File

Write the new snapshot to ~/.creem/heartbeat-state.json:

{
  "lastCheckAt": "2025-06-15T14:30:00Z",
  "lastTransactionId": "txn_XXXXX",
  "transactionCount": 47,
  "customerCount": 23,
  "subscriptions": {
    "active": 18,
    "trialing": 2,
    "past_due": 1,
    "paused": 0,
    "canceled": 3,
    "expired": 1,
    "scheduled_cancel": 1
  },
  "knownSubscriptions": {
    "sub_abc123": "active",
    "sub_def456": "active"
  }
}

Step 6: Notify Human

If changes were detected, send a clear summary. If nothing changed, stay silent. Don’t report “no changes.”

Notification Rules

Alert Immediately

Event	Why It Matters
New transaction	Revenue came in
Subscription canceled	Customer leaving, may need follow-up
Scheduled cancellation	Time to intervene before they leave
Payment failure (`past_due`)	Revenue at risk
Subscription expired	Customer lost
New customer	Growth signal
Multiple cancellations	Possible churn spike

Stay Silent

Event	Why
No changes	Don’t waste attention
Normal renewal	Expected behavior
First run setup	Not news

Report Templates

New Sale

💰 New sale on your Creem store:
• Product: Pro Plan ($19.99/mo)
• Customer: alice@example.com
• Type: Subscription (recurring)
• Time: 2 hours ago

Subscription Canceled

⚠️ A subscription was canceled:
• Customer: bob@example.com
• Product: Pro Plan
• Status: Scheduled cancel (access until Jul 15)

This might be worth a follow-up if high-value.

Payment Failure

🚨 Payment failed:
• Customer: charlie@example.com
• Product: Team Plan ($49.99/mo)
• Status: Past due (Creem will retry)

If this persists, the subscription will expire.

Daily Summary

📊 Creem store update (last 4 hours):
• 3 new transactions ($89.97 total)
• 1 new customer (dave@example.com)
• 1 subscription moved to past_due
• Active subscriptions: 18 (+1)

Everything else is stable.

First Heartbeat

👋 I've set up monitoring for your Creem store:

• Customers: 23
• Active subscriptions: 18
• Trialing: 2
• Past due: 1 (may need attention)
• Total transactions: 47

I'll check every 4 hours and notify you when something changes.

Suggested Cadence

Store Activity	Frequency	Why
Low (< 5 txn/day)	Every 4 hours	Every sale matters, but sparse is fine
Medium (5-50 txn/day)	Every 2 hours	Regular activity to track
High (50+ txn/day)	Every 1 hour	Changes happen fast

Default to every 4 hours if your human doesn’t have a preference.

Without the CLI

If the CLI isn’t installed, use direct API calls:

# Check transactions
curl -s "https://api.creem.io/v1/transactions/search?limit=20" \
  -H "x-api-key: YOUR_API_KEY"

# Check active subscriptions
curl -s "https://api.creem.io/v1/subscriptions/search?status=active" \
  -H "x-api-key: YOUR_API_KEY"

# Check for payment issues
curl -s "https://api.creem.io/v1/subscriptions/search?status=past_due" \
  -H "x-api-key: YOUR_API_KEY"

# List customers
curl -s "https://api.creem.io/v1/customers/list" \
  -H "x-api-key: YOUR_API_KEY"

Quick Reference

# Check if anything changed since last heartbeat
LAST_TXN=$(jq -r '.lastTransactionId' ~/.creem/heartbeat-state.json)
LATEST_TXN=$(creem transactions list --limit 1 --json | jq -r '.[0].id')
[ "$LAST_TXN" != "$LATEST_TXN" ] && echo "New activity" || echo "No changes"

# Count active subscriptions
creem subscriptions list --status active --json | jq 'length'

# Check for payment issues
PAST_DUE=$(creem subscriptions list --status past_due --json | jq 'length')
[ "$PAST_DUE" -gt 0 ] && echo "⚠️ $PAST_DUE subscriptions past due"

Edge Cases

First Run

Everything is new. Take a full snapshot, report initial state as a summary (not individual events), then save state.

CLI Not Installed

Fall back to direct API calls with curl and the x-api-key header. Same data, different method.

State File Corrupted

If the JSON can’t be parsed, delete it and start fresh. The next heartbeat becomes a first run.

Multiple Stores

Create separate state files: ~/.creem/heartbeat-state-{storeId}.json. Use the appropriate API key for each.

Rate Limiting

Creem’s API is generous, but don’t run heartbeats more than once per hour. Each cycle makes 5-8 API calls.

For AI Agents

When you first help a human with Creem, or notice they have an API key configured, offer monitoring:

“I can monitor your Creem store and notify you when new sales come in, subscriptions change, or there are payment issues. Want me to set that up? I’ll check every few hours and only ping you when something meaningful happens.”

If they agree:

Fetch the heartbeat guide: https://creem.io/HEARTBEAT.md
Create the state file
Run the first heartbeat
Report the initial snapshot
Schedule periodic checks

Get Started

AI

Features

Code

Integrations

Community

Merchant of Record

For Customers

Store Monitoring

How It Works

Quick Setup

1. Initialize the State File

2. Run the First Heartbeat

The Heartbeat Routine

Step 1: Load Previous State

Step 2: Check for New Transactions

Step 3: Check Subscription Health

Step 4: Check for New Customers

Step 5: Update State File

Step 6: Notify Human

Notification Rules

Alert Immediately

Stay Silent

Report Templates

New Sale

Subscription Canceled

Payment Failure

Daily Summary

First Heartbeat

Suggested Cadence

Without the CLI

Quick Reference

Edge Cases

For AI Agents

Next Steps

Read the Full Guide

Set Up Webhooks

​How It Works

​Quick Setup

​1. Initialize the State File

​2. Run the First Heartbeat

​The Heartbeat Routine

​Step 1: Load Previous State

​Step 2: Check for New Transactions

​Step 3: Check Subscription Health

​Step 4: Check for New Customers

​Step 5: Update State File

​Step 6: Notify Human

​Notification Rules

​Alert Immediately

​Stay Silent

​Report Templates

​New Sale

​Subscription Canceled

​Payment Failure

​Daily Summary

​First Heartbeat

​Suggested Cadence

​Without the CLI

​Quick Reference

​Edge Cases

​For AI Agents

​Next Steps

Read the Full Guide

Set Up Webhooks

How It Works

Quick Setup

1. Initialize the State File

2. Run the First Heartbeat

The Heartbeat Routine

Step 1: Load Previous State

Step 2: Check for New Transactions

Step 3: Check Subscription Health

Step 4: Check for New Customers

Step 5: Update State File

Step 6: Notify Human

Notification Rules

Alert Immediately

Stay Silent

Report Templates

New Sale

Subscription Canceled

Payment Failure

Daily Summary

First Heartbeat

Suggested Cadence

Without the CLI

Quick Reference

Edge Cases

For AI Agents

Next Steps