> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/agent-security/evo-by-snyk/access-and-authentication.md).

# Access and authentication

{% hint style="info" %}
**Feature availability**

You must have Evo enabled for your Snyk Tenant. To enable Evo, contact your Snyk account team.

Snyk supports private, single-Tenant deployments. Contact your Snyk representative for more details.
{% endhint %}

After you enable Evo, follow these steps:

1. Navigate to `https://evo.snyk.io`.
2. Log in using your existing Snyk authentication workflow.

The following table maps regions to environment URLs:

| Region              | URL                      |
| ------------------- | ------------------------ |
| Default, SNYK-US-01 | <https://evo.snyk.io>    |
| SNYK-US-02          | <https://evo.us.snyk.io> |
| SNYK-AU-01          | <https://evo.au.snyk.io> |
| SNYK-EU-01          | <https://evo.eu.snyk.io> |

## Add members

You must be a Tenant Admin to add members or modify roles.

In app.snyk.io, navigate to **Tenant** > **Members** and assign one of the following roles:

* Tenant Member with Evo Access
* Tenant Viewer with Evo Access

For more information, visit [Manage users in a Tenant](https://app.gitbook.com/s/IgtgtomLQ2TUgSKOMSAm/snyk-hierarchy/tenant/manage-users-in-a-tenant).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.snyk.io/agent-security/evo-by-snyk/access-and-authentication.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.