Andr&eacute; Boekhorst

This plugin combines the two of the best WordPress plugins: <a href="https://wordpress.org/plugins/advanced-custom-fields/" title="Advanced Custom Fields" rel="ugc">Advanced Custom Fields</a> and <a href="https://wordpress.org/plugins/json-rest-api/" title="WP REST API" rel="ugc">WP REST API</a>.
This plugin is based on the work from<a href="https://github.com/PanManAms/WP-JSON-API-ACF" title="Panman on Github" rel="nofollow ugc">Panman on Github</a>. He was right when he said it would be better as plugin, but it would be even better if it would be available through the WordPress Plugin Repository.
An addition made to this plugin is that each ACF Field van be filtered throug the hook: JSON_META_ACFFIELDNAME (where ACFFIELDNAME depends on the fieldname you’ve added in the Advanced Custom Fields backend.)

WP REST API Custom Fields

The plugin is installed but nothing is in the output of API

JUst does not work

Shows Advanced Custom Field output to the WP REST API for posts, pages, taxonomies and users.

Daniel Bachhuber

Ryan McCue

Joe Hoyle

Jonny Harris

Rachel Baker

This plugin uses the OAuth 1.0a protocol to allow delegated authorization; that is, to allow applications to access a site using a set of secondary credentials. This allows server administrators to control which applications can access the site, as well as allowing users to control which applications have access to their data.
This plugin only supports WordPress >= 4.4.
The latest stable version is also available from the <a href="https://wordpress.org/plugins/rest-api-oauth1/" rel="ugc">WordPress Plugin Directory</a>.
<h3>New to OAuth</h3>
We strongly recommend you use an existing OAuth library. You’ll be best off if you understand the authorization process, but leave the actual implementation to well-tested libraries, as there are a lot of edge cases.
Start reading from <a href="docs/introduction/README.md" rel="nofollow ugc">the Introduction</a> to get started!
<h3>For OAuth Veterans</h3>
If you already know how to use OAuth, here’s the lowdown:
<ul>
<li>The plugin uses OAuth 1.0a in</li>
<li>We use the three-legged flow</li>
<li>To find the REST API index, apply the <a href="http://v2.wp-api.org/guide/discovery/" rel="nofollow ugc">API autodiscovery process</a></li>
<li>The endpoints for the OAuth process are available in the REST API index: check for <code>$.authentication.oauth1</code> in the index data.
<ul>
<li>The temporary credentials (request token) endpoint is <code>$.authentication.oauth1.request</code> (typically <code>/oauth1/request</code>)</li>
<li>The authorization endpoint is <code>$.authentication.oauth1.authorize</code> (typically <code>/oauth1/authorize</code>)</li>
<li>The token exchange (access token) endpoint is <code>$.authentication.oauth1.access</code> (typically <code>/oauth1/access</code>)</li>
</ul>
</li>
<li>Your callback URL must match the registered callback URL for the application in the scheme, authority (user/password) host, port, and path sections. (Subpaths are not allowed.)</li>
<li>The only signature method supported is HMAC-SHA1.</li>
<li>OAuth parameters are supported in the Authorization header, query (GET) parameters, or request body (POST) parameters (if encoded as <code>application/x-www-form-urlencoded</code>). OAuth parameters are not supported in JSON data.</li>
</ul>

WP REST API – OAuth 1.0a Server

Hello, I have made an adapter for Parse Server under Node.js with which you can link the login of any installation of wordpress in Parse Server, for that I have used your plugin, which is the one that gives us access_token and allows us to verify the authenticity Of the user registered in the server.

https://github.com/enriquecerda/parse-server-wordpress-login

Links with Parse-server Node.js

Got this working after some good amount of work! Thanks for bringing this and making API calls secure.

Worked like a charm!

Really Useful And Good Plugin
But Please
1- Reply on The Support Forum
2- Update it To Work Good With Last WordPress Verison
3 – No Clear Docs
4 - not work with localhost

Good But

Connect applications to your WordPress site without ever giving away your password.

WP REST API Custom Fields vs WP REST API – OAuth 1.0a Server