diff --git a/pinecone/_internal/http_client.py b/pinecone/_internal/http_client.py
index a756b3fc..3fa65f84 100644
--- a/pinecone/_internal/http_client.py
+++ b/pinecone/_internal/http_client.py
@@ -104,7 +104,14 @@ def _log_curl(
     headers: dict[str, str],
     body: bytes | None = None,
 ) -> None:
-    """Log a curl-equivalent command for debugging when PINECONE_DEBUG_CURL is set."""
+    """Log a curl-equivalent command for debugging when PINECONE_DEBUG_CURL is set.
+
+    Sensitive header values (see ``_SENSITIVE_HEADERS``) are redacted. The
+    request body is intentionally *not* logged verbatim: Pinecone request bodies
+    carry user vector and metadata payloads that may contain sensitive data
+    (e.g. PII embedded in metadata). Only the body size is emitted, and a
+    ``--data-binary @body.json`` placeholder shows where to supply it manually.
+    """
     if not os.environ.get("PINECONE_DEBUG_CURL"):
         return
     safe_headers = _redact_headers(headers)
@@ -112,7 +119,7 @@ def _log_curl(
     for key, value in safe_headers.items():
         parts.append(f"-H '{key}: {value}'")
     if body is not None:
-        parts.append(f"-d '{body.decode('utf-8', errors='replace')}'")
+        parts.append(f"--data-binary @body.json  # {len(body)} byte body omitted")
     curl_cmd = " ".join(parts)
     logger.debug("curl equivalent:\n%s", curl_cmd)
 
diff --git a/tests/unit/test_debug_logging.py b/tests/unit/test_debug_logging.py
index 923506fe..f0d9927e 100644
--- a/tests/unit/test_debug_logging.py
+++ b/tests/unit/test_debug_logging.py
@@ -82,9 +82,11 @@ def test_curl_logging_redacts_api_key(
         assert "my-secret-key-12345" not in caplog.text
         assert "Api-Key: ***" in caplog.text
 
-    def test_curl_logging_includes_body(
+    def test_curl_logging_omits_body_contents(
         self, monkeypatch: pytest.MonkeyPatch, caplog: pytest.LogCaptureFixture
     ) -> None:
+        # The raw request body must never be logged: it can carry user vector
+        # and metadata payloads (potentially PII). Only the byte count is shown.
         monkeypatch.setenv("PINECONE_DEBUG_CURL", "1")
         body = b'{"vectors": [{"id": "v1"}]}'
         with caplog.at_level(logging.DEBUG, logger="pinecone._internal.http_client"):
@@ -94,8 +96,8 @@ def test_curl_logging_includes_body(
                 {"Api-Key": "test-key", "Content-Type": "application/json"},
                 body=body,
             )
-        assert "-d " in caplog.text
-        assert '{"vectors": [{"id": "v1"}]}' in caplog.text
+        assert '{"vectors": [{"id": "v1"}]}' not in caplog.text
+        assert f"{len(body)} byte body omitted" in caplog.text
 
     def test_curl_logging_includes_all_headers(
         self, monkeypatch: pytest.MonkeyPatch, caplog: pytest.LogCaptureFixture
@@ -144,7 +146,9 @@ def test_post_logs_curl_with_body(
             finally:
                 client.close()
         assert "curl -X POST" in caplog.text
-        assert "-d " in caplog.text
+        assert "byte body omitted" in caplog.text
+        # Raw request payload must not appear in logs.
+        assert '"id": "v1"' not in caplog.text
 
     @respx.mock
     def test_no_curl_output_when_disabled(