diff --git a/litellm/proxy/middleware/billable_request_metrics_middleware.py b/litellm/proxy/middleware/billable_request_metrics_middleware.py
index e7ab994acad..d76abefef91 100644
--- a/litellm/proxy/middleware/billable_request_metrics_middleware.py
+++ b/litellm/proxy/middleware/billable_request_metrics_middleware.py
@@ -97,9 +97,16 @@ def _classify_llm_route(path: str) -> Optional[str]:
 
 _MCP_MANAGEMENT_PREFIX = "/v1/mcp"
 _MCP_DYNAMIC_TRANSPORT = re.compile(r"/(?:toolset/)?[^/]+/mcp")
+# The REST wrapper's tool-call endpoint executes a tool and fires the same MCP
+# spend logging as the /mcp transport; its list/test siblings do not bill.
+_MCP_REST_TOOL_CALL = "/mcp-rest/tools/call"
 
 _A2A_INVOKE_SUFFIX = "/message/send"
 _A2A_TRANSPORT_PREFIXES: tuple[str, ...] = ("/v1/a2a/", "/a2a/")
+# Bare POST /a2a/{agent_id} is the JSON-RPC invoke route (method message/send
+# or message/stream travels in the body). /v1/a2a/discover has an extra path
+# segment before the agent id, so this pattern cannot match it.
+_A2A_BARE_INVOKE = re.compile(r"/a2a/[^/]+")
 
 
 def _classify_mcp_route(path: str) -> Optional[str]:
@@ -107,6 +114,8 @@ def _classify_mcp_route(path: str) -> Optional[str]:
         return None
     if path == "/mcp" or path.startswith("/mcp/"):
         return "/mcp"
+    if path == _MCP_REST_TOOL_CALL:
+        return "/mcp"
     if _MCP_DYNAMIC_TRANSPORT.fullmatch(path) is not None:
         return "/mcp"
     return None
@@ -115,6 +124,8 @@ def _classify_mcp_route(path: str) -> Optional[str]:
 def _classify_a2a_route(path: str) -> Optional[str]:
     if path.endswith(_A2A_INVOKE_SUFFIX) and any(path.startswith(prefix) for prefix in _A2A_TRANSPORT_PREFIXES):
         return "/a2a"
+    if _A2A_BARE_INVOKE.fullmatch(path) is not None:
+        return "/a2a"
     return None
 
 
diff --git a/tests/test_litellm/proxy/middleware/test_billable_request_metrics_middleware.py b/tests/test_litellm/proxy/middleware/test_billable_request_metrics_middleware.py
index a5b75281491..453c4494a26 100644
--- a/tests/test_litellm/proxy/middleware/test_billable_request_metrics_middleware.py
+++ b/tests/test_litellm/proxy/middleware/test_billable_request_metrics_middleware.py
@@ -116,8 +116,13 @@ def test_is_pure_asgi_not_base_http_middleware():
         ("/github/mcp/", (BillableCategory.MCP, "/mcp")),
         ("/toolset/my-tools/mcp", (BillableCategory.MCP, "/mcp")),
         ("/github,slack/mcp", (BillableCategory.MCP, "/mcp")),
+        # REST wrapper tool execution fires the same MCP spend logging as /mcp
+        ("/mcp-rest/tools/call", (BillableCategory.MCP, "/mcp")),
         ("/a2a/agent-1/message/send", (BillableCategory.A2A, "/a2a")),
         ("/v1/a2a/agent-9/message/send", (BillableCategory.A2A, "/a2a")),
+        # bare invoke route: the JSON-RPC method (message/send or message/stream)
+        # travels in the body, not the path
+        ("/a2a/agent-1", (BillableCategory.A2A, "/a2a")),
     ],
 )
 def test_classify_billable(path: str, expected: Tuple[BillableCategory, str]):
@@ -160,7 +165,8 @@ def test_classify_billable(path: str, expected: Tuple[BillableCategory, str]):
         "/v1/a2a/discover",
         "/.well-known/oauth-protected-resource/github/mcp",
         "/mcp-rest/tools/list",
-        "/mcp-rest/tools/call",
+        "/mcp-rest/test/connection",
+        "/mcp-rest/test/tools/list",
     ],
 )
 def test_classify_non_billable_returns_none(path: str):