diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index c681078253a..52553788c92 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -744,6 +744,7 @@ class LiteLLMRoutes(enum.Enum):
         "/team/permissions_update",
         "/team/daily/activity",
         "/team/{team_id}/members/me",
+        "/key/share",
         "/model/new",
         "/model/update",
         "/model/delete",
diff --git a/litellm/proxy/management_endpoints/key_management_endpoints.py b/litellm/proxy/management_endpoints/key_management_endpoints.py
index 2a62bc96cef..8d37d89d819 100644
--- a/litellm/proxy/management_endpoints/key_management_endpoints.py
+++ b/litellm/proxy/management_endpoints/key_management_endpoints.py
@@ -5957,7 +5957,7 @@ async def share_key_via_password_link(
     client = get_async_httpx_client(llm_provider=httpxSpecialProvider.SecretManager)
 
     async def _poster(url: str, headers: dict[str, str], body: dict[str, object]) -> HttpResponse:
-        return await client.post(url=url, headers=headers, json=body)
+        return await client.client.post(url, headers=headers, json=body)
 
     result = await create_password_link_secret(
         secret=data.key,
diff --git a/litellm/proxy/management_helpers/password_link_share.py b/litellm/proxy/management_helpers/password_link_share.py
index fee2d10b258..ec75dea7b64 100644
--- a/litellm/proxy/management_helpers/password_link_share.py
+++ b/litellm/proxy/management_helpers/password_link_share.py
@@ -2,7 +2,7 @@ import base64
 import json
 import secrets
 import string
-from typing import Awaitable, Callable, Literal, Optional, Protocol, Union
+from typing import Awaitable, Callable, Literal, Protocol, Union
 
 import httpx
 from cryptography.hazmat.primitives import hashes
@@ -38,7 +38,6 @@ PasswordLinkResult = Union[PasswordLinkShare, PasswordLinkError]
 
 class _SecretData(BaseModel):
     id: str
-    domain: Optional[str] = None
 
 
 class _CreateSecretResponse(BaseModel):
@@ -124,7 +123,6 @@ async def create_password_link_secret(
     except (ValueError, ValidationError) as exc:
         return PasswordLinkError(message=f"Unexpected password.link response: {exc}")
 
-    domain = (parsed.data.domain or base).rstrip("/")
     public_b64 = _b64(public_part.encode("utf-8"))
-    share_link = f"{domain}/{parsed.data.id}/#{public_b64}"
+    share_link = f"{base}/?{parsed.data.id}#{public_b64}"
     return PasswordLinkShare(share_link=share_link, secret_id=parsed.data.id)
diff --git a/tests/proxy_behavior/management/test_key_share.py b/tests/proxy_behavior/management/test_key_share.py
new file mode 100644
index 00000000000..3d869e38d9e
--- /dev/null
+++ b/tests/proxy_behavior/management/test_key_share.py
@@ -0,0 +1,67 @@
+import os
+
+import pytest
+
+from .actors import Actor
+
+pytestmark = pytest.mark.asyncio(loop_scope="session")
+
+
+# POST /key/share is admin-only (proxy admin, the key's team admin, or that
+# team's org admin) and needs PASSWORD_LINK_API_KEY set on the proxy. The
+# behavior suite runs with that env var unset, so an authorized caller on an
+# existing key stops at the config gate (400) rather than hitting password.link
+# over the network. These pin the auth, authz, not-found, and config gates.
+
+
+@pytest.fixture(autouse=True)
+def _unconfigured_password_link(monkeypatch):
+    monkeypatch.delenv("PASSWORD_LINK_API_KEY", raising=False)
+
+
+async def test_key_share_requires_auth(proxy_client, world):
+    resp = await proxy_client.post(
+        "/key/share",
+        json={"key": world.keys[Actor.OWNER].cleartext},
+    )
+    assert resp.status_code == 401, resp.text
+
+
+async def test_key_share_rejects_malformed_key(proxy_client, world):
+    resp = await proxy_client.post(
+        "/key/share",
+        headers={"Authorization": f"Bearer {world.keys[Actor.PROXY_ADMIN].cleartext}"},
+        json={"key": "not a valid key"},
+    )
+    assert resp.status_code == 400, resp.text
+    assert "invalid key format" in resp.text.lower()
+
+
+async def test_key_share_unknown_key_is_not_found(proxy_client, world):
+    resp = await proxy_client.post(
+        "/key/share",
+        headers={"Authorization": f"Bearer {world.keys[Actor.PROXY_ADMIN].cleartext}"},
+        json={"key": "sk-does-not-exist-000000000000"},
+    )
+    assert resp.status_code == 404, resp.text
+
+
+async def test_key_share_denies_non_admin(proxy_client, world):
+    resp = await proxy_client.post(
+        "/key/share",
+        headers={"Authorization": f"Bearer {world.keys[Actor.INTERNAL_USER].cleartext}"},
+        json={"key": world.keys[Actor.OWNER].cleartext},
+    )
+    assert resp.status_code == 403, resp.text
+
+
+@pytest.mark.parametrize("actor", [Actor.PROXY_ADMIN, Actor.TEAM_ADMIN])
+async def test_key_share_admin_reaches_config_gate(actor, proxy_client, world):
+    assert "PASSWORD_LINK_API_KEY" not in os.environ
+    resp = await proxy_client.post(
+        "/key/share",
+        headers={"Authorization": f"Bearer {world.keys[actor].cleartext}"},
+        json={"key": world.keys[Actor.OWNER].cleartext},
+    )
+    assert resp.status_code == 400, resp.text
+    assert "password.link" in resp.text.lower()
diff --git a/tests/test_litellm/proxy/management_helpers/test_password_link_share.py b/tests/test_litellm/proxy/management_helpers/test_password_link_share.py
index e81d8650024..3aaa4201b2d 100644
--- a/tests/test_litellm/proxy/management_helpers/test_password_link_share.py
+++ b/tests/test_litellm/proxy/management_helpers/test_password_link_share.py
@@ -54,7 +54,7 @@ async def test_creates_decryptable_one_time_link() -> None:
         captured["url"] = url
         captured["headers"] = headers
         captured["body"] = body
-        return _FakeResponse(201, {"data": {"id": "abc123", "domain": "https://password.link"}})
+        return _FakeResponse(201, {"data": {"id": "abc123"}})
 
     result = await create_password_link_secret(
         secret=secret,
@@ -77,7 +77,7 @@ async def test_creates_decryptable_one_time_link() -> None:
     assert body["expiration"] == 12
     assert body["max_views"] == 1
 
-    assert result.share_link.startswith("https://password.link/abc123/#")
+    assert result.share_link.startswith("https://password.link/?abc123#")
 
     public_part = base64.b64decode(result.share_link.split("#", 1)[1]).decode("utf-8")
     private_part = base64.b64decode(str(body["password_part_private"])).decode("utf-8")
@@ -109,7 +109,7 @@ async def test_ciphertext_does_not_leak_plaintext() -> None:
 
 
 @pytest.mark.asyncio
-async def test_uses_api_base_when_response_has_no_domain() -> None:
+async def test_link_uses_configured_api_base() -> None:
     async def poster(url: str, headers: dict[str, str], body: dict[str, object]) -> _FakeResponse:
         return _FakeResponse(201, {"data": {"id": "xyz"}})
 
@@ -121,7 +121,7 @@ async def test_uses_api_base_when_response_has_no_domain() -> None:
     )
 
     assert isinstance(result, PasswordLinkShare)
-    assert result.share_link.startswith("https://vault.example.com/xyz/#")
+    assert result.share_link.startswith("https://vault.example.com/?xyz#")
 
 
 @pytest.mark.asyncio