Check API key validity

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Code examples, best practices, pricing

Frequently asked questions

How to use the API key?

Each service call is validated with a key. To validate the API call, you must add the x-api-key header to your requests, containing your own API key. A full example using curl would look like this:

curl -X 'POST' \
  'https://api.calculators.cxn.io/rest-v1/calculator/calculate/elemental-analysis' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: YOUR_API_KEY' \
  -d '{
  "structure": "NC(CC1=CC=CC=C1)C(O)=O"
}'

How can I get a new API key?

In case you need a new API key, you have to unsubscribe from this product on AWS Marketplace page and subscribe again. This process will remove your previous API key associated to you account and assign a new one.

Can I own multiple API keys?

No, you can have only a single API key associated to your AWS account.

How much does an API call cost?

Subscribing and unsubscribing to the service is free of charge. We will bill you only for the API calls you make. Each chemical calculation has a different price based on how complex it is. For the detailed list click here.

Contact us

You can reach us at calculators-support@chemaxon.com.

Visit our website at chemaxon.com.