> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flexprice.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Go-Live Checklist

> Complete this before switching to Production.

## 1. Environment & API Access

* Switch to the Production environment in the Flexprice dashboard.
* Generate a Production API key (Read & Write) and copy it immediately.
* Confirm auth header is `x-api-key: <YOUR_KEY>` and base URL matches your region: `https://us.api.flexprice.io` (US) or `https://api.cloud.flexprice.io` (India).
* Revoke Sandbox API keys for any system now pointing to Production.

## 2. Product Catalog

* Clone your catalog from Sandbox via the Plans dashboard and verify it transferred correctly.
* Confirm all metered feature Event Names are active in Production and match exactly what your app sends. They are immutable after creation.

## 3. Event Ingestion

* Verify required fields on every event: `event_name` (case-sensitive), `external_customer_id`, `timestamp` (ISO 8601 UTC), `event_id` (unique).
* Send test events and confirm they appear in the Event Debugger.

<Warning>
  An `event_name` mismatch returns HTTP 202 but is never counted toward billing. No error is thrown.
</Warning>

## 4. Customers & Subscriptions

* Create Production customers and confirm `external_customer_id` matches what your event pipeline sends.
* Create subscriptions on the correct Production plans.

## 5. Invoicing

* Review `subscription_config.grace_period_days` and confirm the auto-cancel behavior is correct.
* Decide auto-collect vs. manual invoicing before your first billing cycle runs.
* Generate a test invoice and verify line items match expected usage.

## 6. Webhooks

* Register Production webhook endpoints and implement signature verification.
* Subscribe to: `invoice.update.finalized`, `invoice.update.payment`, `subscription.created`, `subscription.cancelled`.
* Return 2xx for all received events. A 4xx permanently stops retries for that event.

## 7. Smoke Test

1. Send test events for a Production test customer.
2. Confirm meter aggregation matches what you sent.
3. Finalize the draft invoice and verify line items.
4. Confirm `invoice.update.finalized` fires and your handler processes it.

## 8. Post-Launch

* Subscribe to the [Flexprice changelog](/changelog) for API changes.
* Subscribe to the [status page](https://status.flexprice.io) for incident notifications.
* Join the [Slack community](https://join.slack.com/t/flexpricecommunity/shared_invite/zt-39uat51l0-n8JmSikHZP~bHJNXladeaQ) for support.

<CardGroup cols={2}>
  <Card icon="cloud" href="/docs/getting-started/cloud" title="Environments & API Keys" />

  <Card icon="bolt" href="/docs/event-ingestion/overview" title="Event Ingestion" />

  <Card icon="webhook" href="/docs/webhook/webhooks" title="Webhooks" />

  <Card icon="file-invoice" href="/docs/invoices/overview" title="Invoices" />
</CardGroup>