Managing customers

Create customers under Settings → Customers, scope API calls per customer, and monitor customer-level activity.

Prerequisites: Your First Integration.

In Fastn, your end users are called Customers (alternatively called "Tenants"). Each customer gets an isolated environment with their own connections, data, and execution history.

Creating customers

1. Go to Settings → Customers.

2. Click "Create Customer".

3. Enter the customer details (name, and any other required fields).

4. Click create. Note the customer ID — you'll use this for API calls and widget embedding.

Screenshot: Settings → Customers showing the Create Customer button and the creation form.

Screenshot: Customer list showing created customers with their IDs.

Naming conventions

Customer IDs are used in API headers and widget configuration. Pick a convention early:

• Internal customer ID: customer_12345

• Slug: acme-corp

• Auto-generated UUID

Changing IDs later means updating every API call.

Customer isolation

Every entity is scoped to a customer:

Your Organization
├── Customer A (Acme Corp)
│   ├── Connections: Acme's Shopify token, Acme's Slack token
│   ├── Executions: Only Acme's workflow runs
│   └── Data: Only Acme's orders, contacts, invoices
├── Customer B (Widget Inc)
│   ├── Connections: Widget's HubSpot token
│   ├── Executions: Only Widget's workflow runs
│   └── Data: Only Widget's contacts

Workflows are defined once by you but execute per-customer using each customer's own connections and data.

Customizing customer limits

By default, all customers share your plan's quota limits. To override limits for specific customers:

1. Go to Settings → Billing.

2. Click "Customize Customer Limits".

3. Set per-customer overrides for any quota dimension.

Use this for:

• High-volume customers who need more events per day

• Trial customers with lower limits

• Enterprise customers with custom agreements

Screenshot: Customize Customer Limits interface showing per-customer quota overrides.

Monitoring customer activity

Activity → Executions

1. Go to Activity → Executions.

2. Use the "All workflows" dropdown to filter.

3. Each execution row shows Triggered By which tells you what started the execution (agent-service, webhook, scheduler, manual).

Screenshot: Activity → Executions filtered to show a specific customer's workflow runs.

Activity → Events

1. Go to Activity → Events.

2. Filter by type: All | Webhook | Scheduled | Manual.

3. See incoming and outgoing events for your customers.

Audit Log

For a complete history of all actions:

1. Go to Settings → Audit Log.

2. Filter by user, action type, resource, and date range.

3. Columns: Timestamp, User, Action, Resource, Outcome.

What you've learned

• How to create customers under Settings → Customers

• Customer isolation model i.e. each customer has separate connections, data, and executions

• How to customize quota limits per customer

• How to monitor customer activity through Executions, Events, and Audit Log