Prefer CLI input over pyproject url

src/datamodel_code_generator/__main__.py

@@ -553,6 +553,13 @@ def validate_class_name_affix_scope(cls, v: str | ClassNameAffixScope | None) ->
     def merge_args(self, args: Namespace) -> None:
         """Merge command-line arguments into config."""
         set_args = {f: getattr(args, f) for f in self.get_fields() if getattr(args, f) is not None}
+        explicit_input_sources = {
+            field_name for field_name in ("input", "url", "input_model") if field_name in set_args
+        }
+
+        if explicit_input_sources:
+            for field_name in {"input", "url", "input_model"} - explicit_input_sources:
+                setattr(self, field_name, None)
 
         if set_args.get("output_model_type") == DataModelType.MsgspecStruct.value:
             set_args["use_annotated"] = True

tests/main/test_main_general.py

@@ -1458,6 +1458,99 @@ def test_use_specialized_enum_pyproject_override_with_cli(output_file: Path, tmp
         )
 
 
+def test_cli_input_overrides_pyproject_url(output_file: Path, tmp_path: Path, mocker: MockerFixture) -> None:
+    """Test --input takes precedence over pyproject.toml url setting."""
+    pyproject_toml = tmp_path / "pyproject.toml"
+    pyproject_toml.write_text(
+        '[tool.datamodel-codegen]\nurl = "https://example.com/schema.json"\ninput-file-type = "jsonschema"\n',
+        encoding="utf-8",
+    )
+
+    cli_input = tmp_path / "cli.json"
+    cli_input.write_text(
+        '{"type": "object", "properties": {"from_input": {"type": "string"}}}',
+        encoding="utf-8",
+    )
+
+    httpx_get_mock = mocker.patch("httpx.get")
+
+    with chdir(tmp_path):
+        run_main_and_assert(
+            input_path=cli_input.relative_to(tmp_path),
+            output_path=output_file,
+            extra_args=["--disable-timestamp"],
+            expected_output=snapshot(
+                """\
+# generated by datamodel-codegen:
+#   filename:  cli.json
+
+from __future__ import annotations
+
+from pydantic import BaseModel
+
+
+class Model(BaseModel):
+    from_input: str | None = None
+"""
+            ),
+        )
+
+    httpx_get_mock.assert_not_called()
+
+
+def test_cli_url_overrides_pyproject_input(output_file: Path, tmp_path: Path, mocker: MockerFixture) -> None:
+    """Test --url takes precedence over pyproject.toml input setting."""
+    pyproject_toml = tmp_path / "pyproject.toml"
+    pyproject_toml.write_text(
+        '[tool.datamodel-codegen]\ninput = "config.json"\ninput-file-type = "jsonschema"\n',
+        encoding="utf-8",
+    )
+
+    config_input = tmp_path / "config.json"
+    config_input.write_text(
+        '{"type": "object", "properties": {"from_config": {"type": "string"}}}',
+        encoding="utf-8",
+    )
+
+    mock_response = mocker.Mock()
+    mock_response.status_code = 200
+    mock_response.headers = {}
+    mock_response.text = '{"type": "object", "properties": {"from_url": {"type": "integer"}}}'
+    httpx_get_mock = mocker.patch("httpx.get", return_value=mock_response)
+
+    with chdir(tmp_path):
+        run_main_with_args([
+            "--url",
+            "http://127.0.0.1:8123/schema.json",
+            "--output",
+            str(output_file),
+            "--disable-timestamp",
+        ])
+
+    assert output_file.read_text(encoding="utf-8") == snapshot(
+        """\
+# generated by datamodel-codegen:
+#   filename:  http://127.0.0.1:8123/schema.json
+
+from __future__ import annotations
+
+from pydantic import BaseModel
+
+
+class Model(BaseModel):
+    from_url: int | None = None
+"""
+    )
+    httpx_get_mock.assert_called_once_with(
+        "http://127.0.0.1:8123/schema.json",
+        headers=None,
+        verify=True,
+        follow_redirects=True,
+        params=None,
+        timeout=30.0,
+    )
+
+
 @pytest.mark.cli_doc(
     options=["--module-split-mode"],
     option_description="""Split generated models into separate files, one per model class.