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title: Generate an OAuth Access Token
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portal_url: https://docs.salesforce.com/developer/current/en-us/einstein-vision-language/einstein/guides/Work-With-Tokens/generate-an-oauth-access-token.md
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  - Einstein Vision and Language
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---

# Generate an OAuth Access Token

A JWT access token is required to make any Einstein Vision and Language API calls.

There are three ways to generate an access token.

- Web UI—Use the [token page](https://api.einstein.ai/token) to enter your username (most likely your email address), upload your private key file, and generate a JWT token.

- Programmatically using your key—Load your private key, generate an assertion, and call the API to get an access token. You must monitor when the token expires and generate a new one.

- Programmatically using a refresh token—Load your private key, generate an assertion, and call the API to get a refresh token. Use that refresh token from then on call the API and generate an access token.