# Key Manager Authenticate (Cert) {% openapi src="/files/bJvxCRcpQFWL9QXqSE5x" path="/v1/authenticate" method="post" %} [km-cert-api-public.yaml](https://544392450-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F909t04Fk8FiEI7fBcmlw%2Fuploads%2Fgit-blob-419162d50a87f510738956b4563b2497b773594d%2Fkm-cert-api-public.yaml?alt=media) {% endopenapi %} > #### ❗️ Key Manager Token Management > > The token you receive is valid for the lifetime of a session that is defined by your pod's administration team. This ranges from 1 hour to 2 weeks. > > You should keep using the same token until you receive a HTTP 401, at which you should re-authenticate and get a new token for a new session. > > [Datafeeds](/main/datafeed.md) survive session expiration, you do not need to re-create your datafeed if your session expires. > #### 🚧 > > Before calling the Pod endpoints, the caller must be authenticated with the pod (the dedicated Symphony cloud service) by calling the [Session Authenticate](/main/bot-authentication/rsa-session-authenticate.md) endpoint, followed by this one. To call the Key Manager Authenticate endpoint, you must provide a certificate where the Common Name of the certificate matches the username of an active Service User account on your pod. --- # 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://rest-api.symphony.com/main/bot-authentication/key-manager-authenticate.md?ask= ``` 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.