diff --git a/swh/loader/package/pypi/loader.py b/swh/loader/package/pypi/loader.py
--- a/swh/loader/package/pypi/loader.py
+++ b/swh/loader/package/pypi/loader.py
@@ -13,6 +13,8 @@
 from pkginfo import UnpackedSDist
 
 from swh.model.model import (
+    MetadataAuthority,
+    MetadataAuthorityType,
     Person,
     Sha1Git,
     TimestampWithTimezone,
@@ -20,7 +22,11 @@
     RevisionType,
 )
 
-from swh.loader.package.loader import BasePackageInfo, PackageLoader
+from swh.loader.package.loader import (
+    BasePackageInfo,
+    PackageLoader,
+    RawExtrinsicMetadataCore,
+)
 from swh.loader.package.utils import api_info, release_name, EMPTY_AUTHOR
 
 logger = logging.getLogger(__name__)
@@ -64,7 +70,8 @@
 
         """
         if not self._info:
-            self._info = json.loads(api_info(self.provider_url))
+            self._raw_info = api_info(self.provider_url)
+            self._info = json.loads(self._raw_info)
         return self._info
 
     def get_versions(self) -> Sequence[str]:
@@ -73,6 +80,21 @@
     def get_default_version(self) -> str:
         return self.info["info"]["version"]
 
+    def get_metadata_authority(self):
+        p_url = urlparse(self.url)
+        return MetadataAuthority(
+            type=MetadataAuthorityType.FORGE,
+            url=f"{p_url.scheme}://{p_url.netloc}/",
+            metadata={},
+        )
+
+    def get_extrinsic_snapshot_metadata(self):
+        return [
+            RawExtrinsicMetadataCore(
+                format="pypi-project-json", metadata=self._raw_info,
+            ),
+        ]
+
     def get_package_info(self, version: str) -> Iterator[Tuple[str, PyPIPackageInfo]]:
         res = []
         for meta in self.info["releases"][version]:
diff --git a/swh/loader/package/pypi/tests/test_pypi.py b/swh/loader/package/pypi/tests/test_pypi.py
--- a/swh/loader/package/pypi/tests/test_pypi.py
+++ b/swh/loader/package/pypi/tests/test_pypi.py
@@ -13,9 +13,22 @@
 
 from swh.core.tarball import uncompress
 from swh.core.pytest_plugin import requests_mock_datadir_factory
-from swh.model.hashutil import hash_to_bytes
-from swh.model.model import Person, Snapshot, SnapshotBranch, TargetType
+from swh.model.hashutil import hash_to_bytes, hash_to_hex
+from swh.model.identifiers import SWHID
+from swh.model.model import (
+    MetadataAuthority,
+    MetadataAuthorityType,
+    MetadataFetcher,
+    MetadataTargetType,
+    Person,
+    RawExtrinsicMetadata,
+    Snapshot,
+    SnapshotBranch,
+    TargetType,
+)
+from swh.storage.interface import PagedResult
 
+from swh.loader.package import __version__
 from swh.loader.package.pypi.loader import (
     PyPILoader,
     pypi_api_url,
@@ -31,6 +44,14 @@
 )
 
 
+@pytest.fixture
+def _0805nexter_api_info(datadir) -> bytes:
+    with open(
+        os.path.join(datadir, "https_pypi.org", "pypi_0805nexter_json"), "rb",
+    ) as f:
+        return f.read()
+
+
 def test_author_basic():
     data = {
         "author": "i-am-groot",
@@ -315,6 +336,41 @@
         )
 
 
+def test_snapshot_metadata(swh_config, requests_mock_datadir, _0805nexter_api_info):
+    url = "https://pypi.org/project/0805nexter"
+    loader = PyPILoader(url)
+
+    actual_load_status = loader.load()
+    assert actual_load_status["status"] == "eventful"
+    assert actual_load_status["snapshot_id"] is not None
+
+    snapshot_swhid = SWHID(
+        object_type="snapshot", object_id=hash_to_hex(actual_load_status["snapshot_id"])
+    )
+    metadata_authority = MetadataAuthority(
+        type=MetadataAuthorityType.FORGE, url="https://pypi.org/",
+    )
+    expected_metadata = [
+        RawExtrinsicMetadata(
+            type=MetadataTargetType.SNAPSHOT,
+            id=snapshot_swhid,
+            authority=metadata_authority,
+            fetcher=MetadataFetcher(
+                name="swh.loader.package.pypi.loader.PyPILoader", version=__version__,
+            ),
+            discovery_date=loader.visit_date,
+            format="pypi-project-json",
+            metadata=_0805nexter_api_info,
+            origin=url,
+        )
+    ]
+    assert loader.storage.raw_extrinsic_metadata_get(
+        type=MetadataTargetType.SNAPSHOT,
+        id=snapshot_swhid,
+        authority=metadata_authority,
+    ) == PagedResult(next_page_token=None, results=expected_metadata,)
+
+
 def test_visit_with_missing_artifact(swh_config, requests_mock_datadir_missing_one):
     """Load a pypi project with some missing artifacts ends up with 1 snapshot