diff --git a/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiAuth.js b/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiAuth.js
new file mode 100644
index 0000000..1bc0dc9
--- /dev/null
+++ b/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiAuth.js
@@ -0,0 +1,88 @@
+// Copyright (C) 2017-2022 BinaryMist Limited. All rights reserved.
+
+// Use of this software is governed by the Business Source License
+// included in the file /licenses/bsl.md
+
+// As of the Change Date specified in that file, in accordance with
+// the Business Source License, use of this software will be governed
+// by the Apache License, Version 2.0
+
+// Originally created for gemeni.health
+/* eslint-disable */
+
+var HttpRequestHeader = Java.type("org.parosproxy.paros.network.HttpRequestHeader");
+var HttpHeader = Java.type("org.parosproxy.paros.network.HttpHeader");
+var URI = Java.type("org.apache.commons.httpclient.URI");
+var ScriptVars = Java.type('org.zaproxy.zap.extension.script.ScriptVars');
+
+function log(msg) {
+    print('[' + this['zap.script.name'] + '] ' + msg);
+}
+
+function authenticate(helper, paramsValues, credentials) {
+    log("Authenticating via JavaScript script...");
+
+    var loginApiUrl = paramsValues.get('OAuthTokenUrl');
+    var clientId = paramsValues.get('ClientId');
+    var clientSecret = paramsValues.get('ClientSecret');
+
+    var requestBody = 'grant_type=' + encodeURIComponent('client_credentials') +
+        '&client_id=' + encodeURIComponent(clientId) +
+        '&client_secret=' + encodeURIComponent(clientSecret);
+
+
+    var msg = helper.prepareMessage();
+
+    var requestUri = new URI(loginApiUrl, false);
+
+    var requestHeader = new HttpRequestHeader(HttpRequestHeader.POST, requestUri, HttpHeader.HTTP10);
+    requestHeader.setHeader("content-type", "application/x-www-form-urlencoded");
+    requestHeader.setContentLength(requestBody.length);
+    msg.setRequestHeader(requestHeader);
+    msg.setRequestBody(requestBody);
+
+    helper.sendAndReceive(msg);
+
+    var parsedResponse = JSON.parse(msg.getResponseBody().toString());
+    if (parsedResponse.error) {
+        log('Authentication failure');
+    }
+    else {
+        log('Authentication success.');
+        ScriptVars.setGlobalVar("accessToken", parsedResponse.access_token)
+    }
+
+    return msg;
+}
+
+// This function is called during the script loading to obtain a list of the names of the required configuration parameters,
+// that will be shown in the Session Properties -> Authentication panel for configuration. They can be used
+// to input dynamic data into the script, from the user interface (e.g. a login URL, name of POST parameters etc.)
+function getRequiredParamsNames() {
+    return ['OAuthTokenUrl', 'ClientId', 'ClientSecret'];
+}
+
+// This function is called during the script loading to obtain a list of the names of the optional configuration parameters,
+// that will be shown in the Session Properties -> Authentication panel for configuration. They can be used
+// to input dynamic data into the script, from the user interface (e.g. a login URL, name of POST parameters etc.)
+function getOptionalParamsNames() {
+    return [];
+}
+
+// This function is called during the script loading to obtain a list of the names of the parameters that are required,
+// as credentials, for each User configured corresponding to an Authentication using this script 
+function getCredentialsParamsNames() {
+    return [];
+}
+
+// This optional function is called during the script loading to obtain the logged in indicator.
+// NOTE: although optional this function must be implemented along with the function getLoggedOutIndicator().
+//function getLoggedInIndicator() {
+//	return "LoggedInIndicator";
+//}
+
+// This optional function is called during the script loading to obtain the logged out indicator.
+// NOTE: although optional this function must be implemented along with the function getLoggedInIndicator().
+//function getLoggedOutIndicator() {
+//	return "LoggedOutIndicator";
+//}
\ No newline at end of file
diff --git a/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiSender.js b/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiSender.js
new file mode 100644
index 0000000..917ce5f
--- /dev/null
+++ b/src/sUtAndEmissaryStrategies/3_emissaryAuthentication/scripts/restApiSender.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2017-2022 BinaryMist Limited. All rights reserved.
+
+// Use of this software is governed by the Business Source License
+// included in the file /licenses/bsl.md
+
+// As of the Change Date specified in that file, in accordance with
+// the Business Source License, use of this software will be governed
+// by the Apache License, Version 2.0
+
+// Originally created for gemeni.health
+/* eslint-disable */
+
+function log(msg) {
+    print('[' + this['zap.script.name'] + '] ' + msg);
+}
+
+var HttpSender = Java.type('org.parosproxy.paros.network.HttpSender');
+var ScriptVars = Java.type('org.zaproxy.zap.extension.script.ScriptVars');
+var HtmlParameter = Java.type('org.parosproxy.paros.network.HtmlParameter')
+var debug = true;
+
+function sendingRequest(msg, initiator, helper) {
+    debug && log('sendingRequest. Initiator: ' + initiator);
+    if (initiator === HttpSender.AUTHENTICATION_INITIATOR) {
+        log("Zap is trying to authenticate");
+        return msg;
+    }
+
+    var accessToken = ScriptVars.getGlobalVar("accessToken");
+    if (!accessToken) {
+        log('Zap has not yet stored the access token, so unable to add it as a header.');
+        return msg;
+    }
+    log("Added authorization token " + accessToken.slice(0, 20) + " ... ");
+    msg.getRequestHeader().setHeader('Authorization', 'Bearer ' + accessToken);
+    return msg;
+}
+
+function responseReceived(msg, initiator, helper) {
+}
\ No newline at end of file