The SignatureAPI connector lets you add electronic signatures to your Power Automate flows.

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Get a Test API Key

To use SignatureAPI in Power Automate, you need an API key. You can start with a free test API key to try out the platform. Here’s how:
1

Sign Up

Sign up for a free SignatureAPI account.
2

Get your API key

Go to the API Key section in your SignatureAPI settings to get your test key.
Test API keys let you create test envelopes. These are useful when building and testing your flows. Test envelopes:
  • Don’t send emails to recipients, but you can see them in the Email section of your dashboard.
  • Are not legally binding.
  • Are free to use.

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Create a Connection

Use your test API key to create a connection to SignatureAPI in Power Automate:
1

Open a Power Automate flow

In Power Automate, open an existing flow or create a new one.
2

Add a SignatureAPI action

Add the Create Envelope action from SignatureAPI.
3

Create your connection

Enter a name for your connection (for example, SignatureAPI Test) and paste your test API key.
Learn more about API keys and how to create

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Your First SignatureAPI Flow

Follow our Quickstart to create an envelope and send it with SignatureAPI.

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Switch to Live Mode

When you’re ready to send legally binding envelopes, add a payment method and get a live API key. Live envelopes:
  • Send emails to recipients. You can also view these emails in your dashboard.
  • Are legally binding.
  • Are billed.
We recommend creating a new connection with your live API key. You can name it something like SignatureAPI Live.