diff --git a/opencode-sms-bridge/server.py b/opencode-sms-bridge/server.py
index 6136299..69a1930 100644
--- a/opencode-sms-bridge/server.py
+++ b/opencode-sms-bridge/server.py
@@ -576,7 +576,7 @@ def _request(
             raise BridgeError("OpenCode response was invalid", ERROR_OPENCODE_RESPONSE_INVALID) from error
 
     def create_session(self) -> str:
-        response = self._request("/api/session", {}, operation=OPENCODE_OPERATION_SESSION_CREATE)
+        response = self._request("/session", {}, operation=OPENCODE_OPERATION_SESSION_CREATE)
         session_id = response.get("id") if isinstance(response, dict) else None
         if not isinstance(session_id, str) or not session_id:
             raise BridgeError("OpenCode session response was invalid", ERROR_OPENCODE_RESPONSE_INVALID)
@@ -589,7 +589,7 @@ def prompt(self, session_id: str, agent: str, parts: list[dict[str, str]]) -> st
         if not text:
             raise BridgeError("OpenCode prompt has no text", ERROR_OPENCODE_INPUT_INVALID)
         response = self._request(
-            f"/api/session/{session_id}/message",
+            f"/session/{session_id}/message",
             {"agent": agent, "parts": [{"type": "text", "text": text}]},
             operation=OPENCODE_OPERATION_PROMPT,
         )
diff --git a/opencode-sms-bridge/test_server.py b/opencode-sms-bridge/test_server.py
index d315045..bce0b51 100644
--- a/opencode-sms-bridge/test_server.py
+++ b/opencode-sms-bridge/test_server.py
@@ -162,8 +162,8 @@ def test_documented_flow_uses_exact_routes_methods_and_bodies(self):
         self.assertEqual(
             [request.full_url for request in requests],
             [
-                "https://opencode.example.invalid/api/session",
-                "https://opencode.example.invalid/api/session/ses_new/message",
+                "https://opencode.example.invalid/session",
+                "https://opencode.example.invalid/session/ses_new/message",
             ],
         )
         self.assertEqual(json.loads(requests[0].data.decode()), {})
@@ -172,14 +172,14 @@ def test_documented_flow_uses_exact_routes_methods_and_bodies(self):
             {"agent": "homesteader", "parts": [{"type": "text", "text": "hi"}]},
         )
         for request in requests:
-            for unsupported in ("/prompt", "prompt_async", "/wait"):
+            for unsupported in ("/api", "/prompt", "prompt_async", "/wait"):
                 self.assertNotIn(unsupported, request.full_url)
 
     def test_session_create_sends_only_documented_fields(self):
         client = OpenCodeClient(self.settings)
         with patch.object(client, "_request", return_value={"id": "ses_123"}) as request:
             self.assertEqual(client.create_session(), "ses_123")
-        request.assert_called_once_with("/api/session", {}, operation=OPENCODE_OPERATION_SESSION_CREATE)
+        request.assert_called_once_with("/session", {}, operation=OPENCODE_OPERATION_SESSION_CREATE)
 
     def test_session_create_rejects_invalid_response(self):
         client = OpenCodeClient(self.settings)
@@ -201,13 +201,15 @@ def test_prompt_makes_single_blocking_message_request(self):
             )
         self.assertEqual(request.call_count, 1)
         request.assert_called_once_with(
-            "/api/session/ses_123/message",
+            "/session/ses_123/message",
             {"agent": "lawnmowerman", "parts": [{"type": "text", "text": "hello"}]},
             operation=OPENCODE_OPERATION_PROMPT,
         )
         for invoked in request.call_args_list:
             path = invoked.args[0]
+            self.assertNotIn("/api", path)
             self.assertNotIn("/prompt", path)
+            self.assertNotIn("prompt_async", path)
             self.assertNotIn("/wait", path)
 
     def test_prompt_joins_text_parts_into_one_documented_text_part(self):
@@ -220,7 +222,7 @@ def test_prompt_joins_text_parts_into_one_documented_text_part(self):
                 [{"type": "text", "text": "line one"}, {"type": "text", "text": "line two"}],
             )
         request.assert_called_once_with(
-            "/api/session/ses_123/message",
+            "/session/ses_123/message",
             {"agent": "grillmaster", "parts": [{"type": "text", "text": "line one\nline two"}]},
             operation=OPENCODE_OPERATION_PROMPT,
         )
@@ -284,11 +286,11 @@ def test_opencode_request_failures_map_to_static_operation_and_category(self):
             (URLError("unknown url type"), "url-configuration"),
             (ValueError("malformed url detail"), "url-configuration"),
             (OSError("socket detail"), "os"),
-            (HTTPError("https://opencode.example.invalid/api/session", 404, "client detail", None, None), "http-4xx"),
-            (HTTPError("https://opencode.example.invalid/api/session", 429, "rate detail", None, None), "http-4xx"),
-            (HTTPError("https://opencode.example.invalid/api/session", 500, "server detail", None, None), "http-5xx"),
-            (HTTPError("https://opencode.example.invalid/api/session", 503, "unavailable detail", None, None), "http-5xx"),
-            (HTTPError("https://opencode.example.invalid/api/session", 302, "redirect detail", None, None), "unknown"),
+            (HTTPError("https://opencode.example.invalid/session", 404, "client detail", None, None), "http-4xx"),
+            (HTTPError("https://opencode.example.invalid/session", 429, "rate detail", None, None), "http-4xx"),
+            (HTTPError("https://opencode.example.invalid/session", 500, "server detail", None, None), "http-5xx"),
+            (HTTPError("https://opencode.example.invalid/session", 503, "unavailable detail", None, None), "http-5xx"),
+            (HTTPError("https://opencode.example.invalid/session", 302, "redirect detail", None, None), "unknown"),
         )
         for failure, category in failures:
             with self.subTest(failure=type(failure).__name__):