How do you calculate Alerts API billing?

1) Evaluation Plan

The Evaluation plan is a free plan intended for developers who are evaluating the Flex APIs and is available only for new accounts. You are allowed to create up to 500 free flight alerts on the Evaluation Plan. Deleting your test flight alerts will not reset the counter. Customers are expected to upgrade to the Contract Plan before launching their product using the Alerts API, or when they have exceeded the Evaluation allowance.

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2) Contract Plan

A single flight rule may send out dozens of alerts (example: a significantly delayed flight may send out many more flight alerts than a routine flight that departs on time).

 

- If our system sends any flight event to your ruleId (example: we send you a callback) you will be charged for that ruleId.

- If you delete the ruleId prior to our system sending a flight event to it, you will not be charged. A rule is always billed if it was in the system. But we will still bill you if it had any flight event processed against it regardless if that flight event resulted in an alert to you. 

- Some ruleIds may receive callbacks days prior to scheduled departure and you will be charged for these. We do not charge you extra if you receive many callbacks on the same flight rule.

 

Flight rules can be created many months in advance. It is common for travelers in the United States to fly to visit relatives for the Thanksgiving holiday in November. Since this is a busy travel weekend, users book their travel months in advance and may add a flight alert early. If they tried to buy their ticket in November, the available flights may be sold out so they make alternate plans and do not add a flight alert. So you may see very few flight alerts created in November for travel in November. But you may be billed for a high number of flight alerts in November where the flight alerts were created months earlier. FlightStats does not bill you at the time the flight alerts are added. Furthermore, if users cancel their travel plans and delete the flight alert before our system sends any flight event to the ruleId, you are not charged. You are only billed once for a ruleId that our system monitored for you, even if you receive many callbacks.

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