diff --git a/test_vx.py b/test_vx.py
index 58bec41..e74f385 100644
--- a/test_vx.py
+++ b/test_vx.py
@@ -44,6 +44,15 @@ def compareDict(original,compare):
         else:
             compareDict(original[key],compare[key])
 
+## Specific API tests ##
+def test_syndicationAPI():
+    tweet = twExtract.extractStatus_syndication(testMediaTweet,workaroundTokens=tokens)
+    assert tweet["full_text"]==testMedia_compare['description']
+
+def test_v2API():
+    tweet = twExtract.extractStatusV2Legacy(testMediaTweet,workaroundTokens=tokens)
+    assert tweet["full_text"]==testMedia_compare['description']
+
 ## Tweet retrieve tests ##
 def test_textTweetExtract():
     tweet = twExtract.extractStatus(testTextTweet,workaroundTokens=tokens)
@@ -253,4 +262,7 @@ def test_combine():
     resp = client.get(f"/rendercombined.jpg?imgs={img1},{img2}",headers={"User-Agent":"test"})
     assert resp.status_code==200
     assert resp.headers["Content-Type"]=="image/jpeg"
-    assert len(resp.data)>1000
\ No newline at end of file
+    assert len(resp.data)>1000
+
+def test_calcSyndicationToken():
+    assert twExtract.calcSyndicationToken("1691389765483200513") == "43lnobuxzql"
\ No newline at end of file
diff --git a/twExtract/__init__.py b/twExtract/__init__.py
index dd97ebc..203fe26 100644
--- a/twExtract/__init__.py
+++ b/twExtract/__init__.py
@@ -5,6 +5,7 @@ import re
 import os
 import random
 import urllib.parse
+import math
 bearer="Bearer AAAAAAAAAAAAAAAAAAAAAPYXBAAAAAAACLXUNDekMxqa8h%2F40K4moUkGsoc%3DTYfbDKbT3jJPCEVnMYqilB28NHfOPqkca3qaAxGfsyKCs0wRbw"
 v2Bearer="Bearer AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA"
 guestToken=None
@@ -71,8 +72,33 @@ def extractStatus_guestToken(url):
         raise TwExtractError(error["code"], error["message"])
     return output
 
-def calcSyndicationToken(twID):
-    return 'x' # wip
+digits = "0123456789abcdefghijklmnopqrstuvwxyz"
+
+def baseConversion(x, base):
+    result = ''
+    i = int(x)
+    while i > 0:
+        result = digits[i % base] + result
+        i = i // base
+    if int(x) != x:
+        result += '.'
+        i = x - int(x)
+        d = 0
+        while i != int(i):
+            result += digits[int(i * base % base)]
+            i = i * base
+            d += 1
+            if d >= 8:
+                break
+    return result
+
+def calcSyndicationToken(idStr):
+    id = int(idStr) / 1000000000000000 * math.pi
+    o = baseConversion(x=id, base=int(math.pow(6, 2)))
+    c = o.replace('0', '').replace('.', '')
+    if c == '':
+        c = '0'
+    return c
 
 def extractStatus_syndication(url,workaroundTokens=None):
     # https://github.com/mikf/gallery-dl/blob/46cae04aa3a113c7b6bbee1bb468669564b14ae8/gallery_dl/extractor/twitter.py#L1784