# Overview of Key Manager API

## Symphony Messaging Key Manager APIs <img src="/files/-MJh8dJszwD87ExJp6qu" alt="" data-size="line">

The Symphony Messaging Key Manager API's sole purpose is to authenticate a bot or API caller with the Key Manager.

## Key Manager Authenticate API <img src="/files/-MJh8dJszwD87ExJp6qu" alt="" data-size="line">

In order to access Agent API endpoints, bots must be authenticated with the Pod and the Key Manager. To authenticate with the Key Manager, a bot must call the [Key Manager Authenticate endpoint](https://developers.symphony.com/restapi/main/bot-authentication/rsa-key-manager-authenticate).

If successful, the Key Manager API returns a Key Manager Token which is valid for up to two weeks. This Key Manager Token must be passed along with every subsequent Agent API request in order to encrypt/decrypt messages on the Agent server. You can read more about Authentication and Token management here:

{% content-ref url="/pages/-MB57YgIwHTbc0P1jRVR" %}
[Authentication](/bots/authentication.md)
{% endcontent-ref %}


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# Agent Instructions: 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:

```
GET https://docs.developers.symphony.com/bots/overview-of-rest-api/key-manager-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.