diff --git a/src/requirements.txt b/src/requirements.txt
new file mode 100644
index 0000000..4e517fe
--- /dev/null
+++ b/src/requirements.txt
@@ -0,0 +1,3 @@
+requests
+json
+pytest
diff --git a/src/ssikit.py b/src/ssikit.py
new file mode 100644
index 0000000..3ca3b96
--- /dev/null
+++ b/src/ssikit.py
@@ -0,0 +1,132 @@
+import requests
+import json
+
+CUSTODIAN = 'http://localhost:7002'
+SIGNATORY = 'http://localhost:7001'
+AUDITOR = 'http://localhost:7003'
+
+CORE = 'http://localhost:7000'
+ESSIF = 'http://localhost:7004'
+
+PROOF_TYPE = 'LD_PROOF' # Specifies the format and cryptographic algorithm used for the digital signature of the Verifiable Credential. E.g. LD_PROOF
+STATUS_TYPE = 'StatusList2021Entry' # Specifies if the credential should be issued with status and the type of the status. Options StatusList2021Entry or SimpleCredentialStatus2022
+
+jsonheaders = {
+    'Content-Type': 'application/json',  # specify the type of data you're sending
+    'Accept': 'application/json',  # specify the type of data you can accept
+}
+
+jsontextheaders = {
+    'Content-Type': 'application/json',  # specify the type of data you're sending
+    'Accept': 'text/plain',  # specify the type of data you can accept
+}
+
+def check_backend_service():
+    url = f'{CUSTODIAN}/'
+    try:
+        response = requests.get(url)
+        # response.raise_for_status()
+    except requests.exceptions.RequestException:
+        raise ImportError("Local backend service not responding")
+
+# check_backend_service()
+
+def debug_http(): 
+    import logging
+
+    # internet search:
+    # These two lines enable debugging at httplib level (requests->urllib3->http.client)
+    # You will see the REQUEST, including HEADERS and DATA, and RESPONSE with HEADERS but without DATA.
+    # The only thing missing will be the response.body which is not logged.
+    try:
+        import http.client as http_client
+    except ImportError:
+        # Python 2
+        import httplib as http_client
+    http_client.HTTPConnection.debuglevel = 1
+
+    # You must initialize logging, otherwise you'll not see debug output.
+    logging.basicConfig()
+    logging.getLogger().setLevel(logging.DEBUG)
+    requests_log = logging.getLogger("requests.packages.urllib3")
+    requests_log.setLevel(logging.DEBUG)
+    requests_log.propagate = True
+
+def create_did(method):
+    url = f'{CUSTODIAN}/did/create'
+    data = {
+      'method': method
+    }
+    response = requests.post(url, json=data, headers=jsonheaders)
+    return response.text
+    #return response.status_code
+
+# print(create_did('key'))
+issuer_id = 'did:key:z6MkjAkDgMGxBFbAvUP5snkhz9WDDVQ5uVDwHR88ykAiMfNF'
+subject_id = 'did:key:z6MkjtArtcgMSgV8aBdbFCFETqhFanLVRXcQPs7BeXyF5wdL'
+
+default_alg = 'EdDSA_Ed25519'
+
+def generate_key(alg=default_alg):
+    url = f'{CUSTODIAN}/keys/generate'
+    data = {
+      'keyAlgorithm': alg
+    }
+    # print(data)
+    response = requests.post(url, json=data, headers=jsonheaders)
+    return response.json()
+    #return response.status_code
+
+# print('generate_key: ' + json.dumps(generate_key()))
+
+def list_templates():
+    url = f'{SIGNATORY}/v1/templates'
+
+    response = requests.get(url, headers=jsonheaders)
+    #print(response.status_code)
+    return response.text
+
+# print(list_templates())
+
+def import_template(id, template):
+    url = f'{SIGNATORY}/v1/templates/' + id
+
+    response = requests.post(url, json=json.loads(template), headers=jsontextheaders)
+    print(response.text)
+    return response.status_code
+    #return response.text
+
+default_template='EmployeeID'
+
+# print('Import template: ', import_template('EmployeeID','{"type":["VerifiableCredential","EmployeeID"],"credentialSubject":{"id":"","name":"","role":"","joiningDate":""}}'))
+
+def issue_vc(issuer, subject, template, cdata):
+    url = f'{SIGNATORY}/v1/credentials/issue'
+    jls_extract_var = cdata
+    body = {
+      'templateId': template,
+      'config': {
+        'issuerDid': issuer,
+        'subjectDid': subject,
+        'proofType': PROOF_TYPE, 
+        'statusType': STATUS_TYPE
+        },
+        'credentialData': cdata
+    }
+
+    print(body)
+    response = requests.post(url, json=body, headers=jsonheaders)
+    return response.json()
+    #return response.text
+
+default_cdata = json.loads('{"name":"Emma","role":"Engineer","joiningDate":"2023-06-28"}')
+
+# {'templateId': 'EmployeeID', 'config': {'issuerDid': 'did:key:z6MkjAkDgMGxBFbAvUP5snkhz9WDDVQ5uVDwHR88ykAiMfNF', 'subjectDid': 'did:key:z6MkjtArtcgMSgV8aBdbFCFETqhFanLVRXcQPs7BeXyF5wdL', 'proofType': 'LD_PROOF', 'statusType': 'StatusList2021Entry'}, 'credentialData': {'name': 'Emma', 'role': 'Engineer', 'joiningDate': '2023-06-28'}}
+# print('Issue VC: ', json.dumps(issue_vc(issuer_id, subject_id, default_template, default_cdata)))
+# Note: issue when generating the credential, returns revocation and credential has some errors
+
+if __name__ == "__main__":
+    check_backend_service()
+    print("Main: Check comments for testing calls")
+else:
+    check_backend_service()
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diff --git a/src/test_ssikit.py b/src/test_ssikit.py
new file mode 100644
index 0000000..3c34509
--- /dev/null
+++ b/src/test_ssikit.py
@@ -0,0 +1,13 @@
+import pytest
+from ssikit import create_did
+import re
+
+# 'did:key:z6MkjtArtcgMSgV8aBdbFCFETqhFanLVRXcQPs7BeXyF5wdL'
+def test_create_did():
+    pattern = r"did:.*:[a-zA-Z0-9]+"
+
+    result = create_did('key')
+    assert result.startswith("did:")
+    #assert re.match(result,'^did:[a-zA-Z]+:[a-zA-Z0-9]+') is not None
+
+#test_create_did()
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