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API keys management

To use the Taxwire API you need an API key. Assuming you have an account set up, login and generate an API key from the developer page.
If you don’t already have a key created, make a new one here: create a key Name the key name a key Make sure you copy the key and save it into a secure store (1Password, etc.). Once the popup is closed you cannot see the key in clear again. copy a key You can now see all active keys see a key

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Request Authentication

All API endpoints are authenticated using an API key header. Copy the secret key you saved when creating your API key and pass it as a http header to all requests to the API. Example code with appropriate auth header (X-API-Key): 
curl --request POST \
  --url https://api.taxwire.com/calculations \
  --header 'Content-Type: application/json' \
  --header 'Taxwire-Version: hydrogen.2025-04-15' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --data '{....SOME BEAUTIFUL JSON....}'