OpenSearch/rest-api-spec/README.markdown

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# Elasticsearch REST API JSON specification
This repository contains a collection of JSON files which describe the [Elasticsearch](http://elasticsearch.org) HTTP API.
Their purpose is to formalize and standardize the API, to facilitate development of libraries and integrations.
Example for the ["Create Index"](http://www.elasticsearch.org/guide/reference/api/admin-indices-create-index/) API:
```json
{
"indices.create": {
"documentation": "http://elasticsearch.org/guide/reference/mapping/",
"methods": ["PUT", "POST"],
"url": {
"path": "/{index}",
"paths": ["/{index}"],
"parts": {
"index": {}
},
"params": {
"index": {},
"timeout": {}
}
},
"body": {
}
}
}
```
The specification contains:
* The _name_ of the API (`indices.create`), which usually corresponds to the client calls
* Link to the documentation at <http://elasticsearch.org>
* List of HTTP methods for the endpoint
* URL specification: path, parts, parameters
* Whether body is allowed for the endpoint or not
The `methods` and `url.paths` elements list all possible HTTP methods and URLs for the endpoint;
it is the responsibility of the developer to use this information for a sensible API on the target platform.
The repository also contains a utility script in Ruby which will scan and parse the Elasticsearch source code
to extract the information from the Java source files. Run `bundle install` and then `thor help api:generate:spec`.
## License
This software is licensed under the Apache 2 license.