---
title: stack es security oidc-prepare-authentication cli command
description: Prepare OpenID connect authentication. Behaviour flags: --dry-run — validate all inputs and exit without performing any action 
url: https://www.elastic.co/elastic/docs-builder/docs/4118/reference/elastic-cli/cli/stack/es/security/oidc-prepare-authentication
applies_to:
  - Elastic Cloud Serverless: Preview
  - Elastic Stack: Preview
---

# stack es security oidc-prepare-authentication cli command
<cli-modifiers>
</cli-modifiers>

```bash
elastic stack es security oidc-prepare-authentication [options]
```

Prepare OpenID connect authentication.
**Behaviour flags:**
`--dry-run` — validate all inputs and exit without performing any action

## Options

<definitions>
  <definition term="--iss string">
    In the case of a third party initiated single sign on, this is the issuer identifier for the OP that the RP is to send the authentication request to.
    It cannot be specified when *realm* is specified.
    One of *realm* or *iss* is required.
  </definition>
  <definition term="--login-hint string">
    In the case of a third party initiated single sign on, it is a string value that is included in the authentication request as the *login_hint* parameter.
    This parameter is not valid when *realm* is specified.
  </definition>
  <definition term="--nonce string">
    The value used to associate a client session with an ID token and to mitigate replay attacks.
    If the caller of the API does not provide a value, Elasticsearch will generate one with sufficient entropy and return it in the response.
  </definition>
  <definition term="--realm string">
    The name of the OpenID Connect realm in Elasticsearch the configuration of which should be used in order to generate the authentication request.
    It cannot be specified when *iss* is specified.
    One of *realm* or *iss* is required.
  </definition>
  <definition term="--state string">
    The value used to maintain state between the authentication request and the response, typically used as a Cross-Site Request Forgery mitigation.
    If the caller of the API does not provide a value, Elasticsearch will generate one with sufficient entropy and return it in the response.
  </definition>
  <definition term="--error-trace">
    When set to `true` Elasticsearch will include the full stack trace of errors
    when they occur.
  </definition>
  <definition term="--filter-path string">
    Comma-separated list of filters in dot notation which reduce the response
    returned by Elasticsearch.
    **Repeatable:** pass `--filter-path` multiple times to supply more than one value
  </definition>
  <definition term="--human">
    When set to `true` will return statistics in a format suitable for humans.
    For example `"exists_time": "1h"` for humans and
    `"exists_time_in_millis": 3600000` for computers. When disabled the human
    readable values will be omitted. This makes sense for responses being consumed
    only by machines.
  </definition>
  <definition term="--pretty">
    If set to `true` the returned JSON will be "pretty-formatted". Only use
    this option for debugging only.
  </definition>
  <definition term="--input-file string">
    path to a JSON file to use as command input
  </definition>
  <definition term="--dry-run">
    validate all inputs and exit without performing any action (preview changes without applying them)
  </definition>
</definitions>


## Global Options

<definitions>
  <definition term="--json">
    output as JSON
  </definition>
</definitions>