---
layout: default
title: REST API reference
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permalink: /api-reference/
redirect_from:
  - /opensearch/rest-api/index/
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# REST API reference
**Introduced 1.0**
{: .label .label-purple }

You can use REST APIs for most operations in OpenSearch. In this reference, we provide a description of the API, and details that include the paths and HTTP methods, supported parameters, and example requests and responses.

This reference includes the REST APIs supported by OpenSearch. If a REST API is missing, please provide feedback or submit a pull request in GitHub.
{: .tip }

## Related articles 

- [Analyze API]({{site.url}}{{site.baseurl}}/api-reference/analyze-apis/)
- [Access control API]({{site.url}}{{site.baseurl}}/security/access-control/api/)
- [Alerting API]({{site.url}}{{site.baseurl}}/observing-your-data/alerting/api/)
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- [CAT APIs]({{site.url}}{{site.baseurl}}/api-reference/cat/index/)
- [Cluster APIs]({{site.url}}{{site.baseurl}}/api-reference/cluster-api/index/)
- [Common REST parameters]({{site.url}}{{site.baseurl}}/api-reference/common-parameters/)
- [Count]({{site.url}}{{site.baseurl}}/api-reference/count/)
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- [ML Commons API]({{site.url}}{{site.baseurl}}/ml-commons-plugin/api/) 
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- [Nodes APIs]({{site.url}}{{site.baseurl}}/api-reference/nodes-apis/index/)
- [Notifications API]({{site.url}}{{site.baseurl}}/observing-your-data/notifications/api/)
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- [Snapshot APIs]({{site.url}}{{site.baseurl}}/api-reference/snapshots/index/)
- [Stats API]({{site.url}}{{site.baseurl}}/tuning-your-cluster/availability-and-recovery/stats-api/)
- [Supported units]({{site.url}}{{site.baseurl}}/api-reference/units/)
- [Tasks]({{site.url}}{{site.baseurl}}/api-reference/tasks/)
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