diff --git a/apps/edr-freight-api/py/create_contracts.py b/apps/edr-freight-api/py/create_contracts.py
index 086ecf993..956c81cbb 100644
--- a/apps/edr-freight-api/py/create_contracts.py
+++ b/apps/edr-freight-api/py/create_contracts.py
@@ -53,9 +53,13 @@ CUSTOMER_PASSWORD = os.getenv("CUSTOMER_PASSWORD", "")
 ADMIN_EMAIL = os.getenv("ADMIN_EMAIL", "")
 ADMIN_PASSWORD = os.getenv("ADMIN_PASSWORD", "")
 
-# Phone the sign-OTP is sent to and read back from Postgres. Independent of the
-# logged-in user — the sign endpoint keys the OTP purely on this number.
+# Phone the sign-OTP is sent to and read back from Postgres. Resolved at runtime
+# from the customer's own IAM profile (GET /api/me → phoneNumber). OTP_PHONE is an
+# optional override / fallback used only when the customer has no phone on file.
+# The sign endpoint keys the OTP purely on this number, so it just has to be the
+# same value for "send" and "read".
 OTP_PHONE = os.getenv("OTP_PHONE", "")
+OTP_PHONE_FALLBACK = os.getenv("OTP_PHONE_FALLBACK", "251900000000")
 
 # DB connection used ONLY to read the plaintext sign-OTP from freight.otp_verifications.
 DB_HOST = os.getenv("DB_HOST", "localhost")
@@ -202,6 +206,25 @@ def login(email: str, password: str, who: str) -> Client:
 # --------------------------------------------------------------------------- #
 # OTP — send + read from Postgres
 # --------------------------------------------------------------------------- #
+def resolve_otp_phone(customer: Client) -> str:
+    """Phone the sign-OTP is sent to. Prefer the customer's own IAM profile phone
+    (GET /api/me → phoneNumber); fall back to OTP_PHONE, then OTP_PHONE_FALLBACK.
+    The value only has to be consistent between send + DB read."""
+    phone = ""
+    try:
+        me = customer.get("/me") or {}
+        phone = (me.get("phoneNumber") or "").strip()
+    except Exception:
+        pass
+    phone = phone or OTP_PHONE or OTP_PHONE_FALLBACK
+    if not phone:
+        raise RuntimeError(
+            "Could not resolve an OTP phone (customer has none, and neither "
+            "OTP_PHONE nor OTP_PHONE_FALLBACK is set)."
+        )
+    return phone
+
+
 def send_otp(customer: Client, phone: str) -> None:
     # POST /api/otp/send is @Public — no token needed, but sending one is harmless.
     customer.post_json("/otp/send", {"phone": phone})
@@ -321,7 +344,7 @@ def waafi_file_tuple(field_name: str) -> tuple:
 
 
 def drive_flow(
-    flow: Flow, idx: int, customer: Client, admin: Client, ref: RefData
+    flow: Flow, idx: int, customer: Client, admin: Client, ref: RefData, otp_phone: str
 ) -> dict[str, Any]:
     result: dict[str, Any] = {"flow": flow.label, "n": idx, "status": None}
 
@@ -349,9 +372,9 @@ def drive_flow(
     admin.post_json(f"/contracts/{cid}/contract/generate")
 
     # S6 — customer sign (needs OTP) → SIGNED_CUSTOMER
-    send_otp(customer, OTP_PHONE)
+    send_otp(customer, otp_phone)
     time.sleep(1.0)  # let the OTP row land
-    otp = read_otp_from_db(OTP_PHONE)
+    otp = read_otp_from_db(otp_phone)
     customer.post_json(
         f"/contracts/{cid}/contract/sign",
         {
@@ -360,7 +383,7 @@ def drive_flow(
             "signerDisplayName": "Seed Customer",
             "consentText": "I agree.",
             "otp": otp,
-            "otpPhone": OTP_PHONE,
+            "otpPhone": otp_phone,
         },
     )
 
@@ -429,7 +452,6 @@ def require_config() -> None:
             ("CUSTOMER_PASSWORD", CUSTOMER_PASSWORD),
             ("ADMIN_EMAIL", ADMIN_EMAIL),
             ("ADMIN_PASSWORD", ADMIN_PASSWORD),
-            ("OTP_PHONE", OTP_PHONE),
         ]
         if not val
     ]
@@ -453,6 +475,9 @@ def main() -> None:
     customer = login(CUSTOMER_EMAIL, CUSTOMER_PASSWORD, "customer")
     admin = login(ADMIN_EMAIL, ADMIN_PASSWORD, "admin")
 
+    otp_phone = resolve_otp_phone(customer)
+    print(f"OTP phone: {otp_phone}")
+
     print("Loading reference data...")
     ref = load_ref_data(admin)
 
@@ -461,7 +486,7 @@ def main() -> None:
         for n in range(1, CONTRACTS_PER_FLOW + 1):
             tag = f"[{flow.label} #{n}]"
             try:
-                res = drive_flow(flow, n, customer, admin, ref)
+                res = drive_flow(flow, n, customer, admin, ref, otp_phone)
                 print(f"  OK   {tag} {res['reference']} -> {res['status']}")
                 results.append(res)
             except Exception as exc:  # noqa: BLE001 — report and continue