[1] [CITE[interagent/http-api-design]]
( ([TIME[2014-05-30 01:50:10 +09:00]] 版))
<https://github.com/interagent/http-api-design>

[2] [CITE@en[Platform API Reference | Heroku Dev Center]]
( ([TIME[2014-10-08 04:05:18 +09:00]] 版))
<https://devcenter.heroku.com/articles/platform-api-reference#clients>

>
[PRE(HTTP code)[
Accept: application/vnd.heroku+json; version=3
]PRE]

[FIG(quote)[
[FIGCAPTION[
[3] [CITE@en[interagent/http-api-design]]
([TIME[2015-06-28 10:53:11 +09:00]] 版)
<https://github.com/interagent/http-api-design>
]FIGCAPTION]

> You may consider optionally providing a way for clients to retrieve more verbose response, either via a query parameter (e.g. ?pretty=true) or via an Accept header param (e.g. Accept: application/vnd.heroku+json; version=3; indent=4;).

]FIG]


[FIG(quote)[
[FIGCAPTION[
[4] [CITE@en[Require Versioning in the Accepts Header · HTTP API Design]]
([[Wesley Beary]]著, [TIME[2017-02-10 22:07:15 +09:00]])
<https://geemus.gitbooks.io/http-api-design/content/en/foundations/require-versioning-in-the-accepts-header.html>
]FIGCAPTION]

> It is best to provide version specification in the headers, with other metadata, using the Accept header with a custom content type, e.g.:
> Accept: application/vnd.heroku+json; version=3

]FIG]


[FIG(quote)[
[FIGCAPTION[
[5] [CITE@en[Keep JSON minified in all responses · HTTP API Design]]
([[Wesley Beary]]著, [TIME[2017-02-10 22:07:15 +09:00]])
<https://geemus.gitbooks.io/http-api-design/content/en/responses/keep-json-minified-in-all-responses.html>
]FIGCAPTION]

> You may consider optionally providing a way for clients to retrieve more verbose response, either via a query parameter (e.g. ?pretty=true) or via an Accept header param (e.g. Accept: application/vnd.heroku+json; version=3; indent=4;).

]FIG]


[FIG(quote)[
[FIGCAPTION[
[6] [CITE@en[Container Registry & Runtime (Docker Deploys) | Heroku Dev Center]]
([TIME[2020-10-14T02:14:56.000Z]])
<https://devcenter.heroku.com/articles/container-registry-and-runtime>
]FIGCAPTION]

>   -H "Content-Type: application/json" \
>   -H "Accept: application/vnd.heroku+json; version=3.docker-releases"

]FIG]