diff --git a/src/sentry/api/endpoints/project_profiling_profile.py b/src/sentry/api/endpoints/project_profiling_profile.py
index 03009b426fab..cf7d4a67aea1 100644
--- a/src/sentry/api/endpoints/project_profiling_profile.py
+++ b/src/sentry/api/endpoints/project_profiling_profile.py
@@ -1,7 +1,8 @@
 from typing import Any
 
 import orjson
-from django.http import HttpResponse
+import vroomrs
+from django.http import Http404, HttpResponse, StreamingHttpResponse
 from drf_spectacular.utils import OpenApiParameter, extend_schema
 from rest_framework.request import Request
 from rest_framework.response import Response
@@ -16,6 +17,7 @@
 from sentry.apidocs.examples.profiling_examples import ProfilingExamples
 from sentry.apidocs.parameters import GlobalParams
 from sentry.apidocs.utils import inline_sentry_response_serializer
+from sentry.models.files.utils import get_profiles_storage
 from sentry.models.project import Project
 from sentry.models.release import Release
 from sentry.profiles.utils import get_from_profiling_service, proxy_profiling_service
@@ -141,3 +143,62 @@ def get(
             "path": f"/organizations/{project.organization_id}/projects/{project.id}/raw_chunks/{profiler_id}/{chunk_id}",
         }
         return proxy_profiling_service(**kwargs)
+
+
+@cell_silo_endpoint
+class ProjectProfilingChunkAttachmentEndpoint(ProjectProfilingBaseEndpoint):
+    def get(
+        self,
+        request: Request,
+        project: Project,
+        profiler_id: str,
+        chunk_id: str,
+        attachment_name: str,
+    ) -> Response | StreamingHttpResponse:
+        """Download an attachment (e.g. a perfetto trace) of a profile chunk.
+
+        The chunk is loaded from the profiles object store and carries the list
+        of its attachments, each with a name, content type and the object store
+        id of the attached file. The client only supplies the profiler/chunk IDs
+        and the attachment name; everything else is resolved server-side.
+        """
+        if not features.has(
+            "organizations:continuous-profiling", project.organization, actor=request.user
+        ):
+            return Response(status=404)
+
+        storage = get_profiles_storage()
+
+        chunk_path = f"{project.organization_id}/{project.id}/{profiler_id}/{chunk_id}"
+        if not storage.exists(chunk_path):
+            raise Http404
+
+        try:
+            with storage.open(chunk_path) as f:
+                chunk = vroomrs.decompress_profile_chunk(f.read())
+        except OSError:
+            raise Http404
+
+        attachment = next(
+            (a for a in chunk.get_attachments() if a.name == attachment_name),
+            None,
+        )
+        if attachment is None or not attachment.stored_id:
+            raise Http404
+
+        try:
+            fp = storage.open(attachment.stored_id)
+        except OSError:
+            raise Http404
+
+        def stream_attachment():
+            with fp:
+                while chunk := fp.read(4096):
+                    yield chunk
+
+        response = StreamingHttpResponse(
+            stream_attachment(),
+            content_type=attachment.content_type or "application/octet-stream",
+        )
+        response["Content-Disposition"] = f'attachment; filename="{attachment.name}"'
+        return response
diff --git a/src/sentry/api/urls.py b/src/sentry/api/urls.py
index aa6bd479ed90..25b828e50e58 100644
--- a/src/sentry/api/urls.py
+++ b/src/sentry/api/urls.py
@@ -813,6 +813,7 @@
 from .endpoints.project_plugin_details import ProjectPluginDetailsEndpoint
 from .endpoints.project_plugins import ProjectPluginsEndpoint
 from .endpoints.project_profiling_profile import (
+    ProjectProfilingChunkAttachmentEndpoint,
     ProjectProfilingProfileEndpoint,
     ProjectProfilingRawChunkEndpoint,
     ProjectProfilingRawProfileEndpoint,
@@ -3224,6 +3225,11 @@ def create_group_urls(name_prefix: str) -> list[URLPattern | URLResolver]:
         ProjectProfilingRawChunkEndpoint.as_view(),
         name="sentry-api-0-project-profiling-raw-chunk",
     ),
+    re_path(
+        r"^(?P<organization_id_or_slug>[^/]+)/(?P<project_id_or_slug>[^/]+)/profiling/chunks/(?P<profiler_id>(?:\d+|[A-Fa-f0-9-]{32,36}))/(?P<chunk_id>(?:\d+|[A-Fa-f0-9-]{32,36}))/attachments/(?P<attachment_name>[^/]+)/$",
+        ProjectProfilingChunkAttachmentEndpoint.as_view(),
+        name="sentry-api-0-project-profiling-chunk-attachment",
+    ),
     re_path(
         r"^(?P<organization_id_or_slug>[^/]+)/(?P<project_id_or_slug>[^/]+)/statistical-detector/$",
         ProjectStatisticalDetectors.as_view(),
diff --git a/static/app/utils/api/knownSentryApiUrls.generated.ts b/static/app/utils/api/knownSentryApiUrls.generated.ts
index bfaf13c5cc30..1f264e4d289d 100644
--- a/static/app/utils/api/knownSentryApiUrls.generated.ts
+++ b/static/app/utils/api/knownSentryApiUrls.generated.ts
@@ -148,6 +148,7 @@ export type KnownSentryApiUrls =
   | '/organizations/$organizationIdOrSlug/events/'
   | '/organizations/$organizationIdOrSlug/events/$projectIdOrSlug:$eventId/'
   | '/organizations/$organizationIdOrSlug/events/anomalies/'
+  | '/organizations/$organizationIdOrSlug/events/validate/'
   | '/organizations/$organizationIdOrSlug/explore/saved/'
   | '/organizations/$organizationIdOrSlug/explore/saved/$id/'
   | '/organizations/$organizationIdOrSlug/explore/saved/$id/starred/'
@@ -195,6 +196,7 @@ export type KnownSentryApiUrls =
   | '/organizations/$organizationIdOrSlug/issue-view-title/generate/'
   | '/organizations/$organizationIdOrSlug/issues-count/'
   | '/organizations/$organizationIdOrSlug/issues-metrics/'
+  | '/organizations/$organizationIdOrSlug/issues-progress/'
   | '/organizations/$organizationIdOrSlug/issues-stats/'
   | '/organizations/$organizationIdOrSlug/issues-timeseries/'
   | '/organizations/$organizationIdOrSlug/issues-with-supergroups/'
@@ -309,7 +311,6 @@ export type KnownSentryApiUrls =
   | '/organizations/$organizationIdOrSlug/preprodartifacts/size-analysis/compare/$headArtifactId/$baseArtifactId/'
   | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/$snapshotId/'
   | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/$snapshotId/archive/'
-  | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/$snapshotId/download/'
   | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/$snapshotId/images/$imageIdentifier/'
   | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/$snapshotId/recompare/'
   | '/organizations/$organizationIdOrSlug/preprodartifacts/snapshots/latest-base/'
@@ -392,7 +393,6 @@ export type KnownSentryApiUrls =
   | '/organizations/$organizationIdOrSlug/shortids/$issueId/'
   | '/organizations/$organizationIdOrSlug/spans-samples/'
   | '/organizations/$organizationIdOrSlug/spans/fields/'
-  | '/organizations/$organizationIdOrSlug/spans/fields/$key/values/'
   | '/organizations/$organizationIdOrSlug/stats-summary/'
   | '/organizations/$organizationIdOrSlug/stats/'
   | '/organizations/$organizationIdOrSlug/stats_v2/'
@@ -500,6 +500,7 @@ export type KnownSentryApiUrls =
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/preprodartifacts/snapshots/upload-options/'
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/processing-errors/'
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/processing-errors/$uuid/'
+  | '/projects/$organizationIdOrSlug/$projectIdOrSlug/profiling/chunks/$profilerId/$chunkId/attachments/$attachmentName/'
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/profiling/profiles/$profileId/'
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/profiling/raw_chunks/$profilerId/$chunkId/'
   | '/projects/$organizationIdOrSlug/$projectIdOrSlug/profiling/raw_profiles/$profileId/'
diff --git a/tests/sentry/api/endpoints/test_project_profiling_profile.py b/tests/sentry/api/endpoints/test_project_profiling_profile.py
index 602a70a5c308..4698387ca5a8 100644
--- a/tests/sentry/api/endpoints/test_project_profiling_profile.py
+++ b/tests/sentry/api/endpoints/test_project_profiling_profile.py
@@ -1,5 +1,10 @@
+from io import BytesIO
+from typing import Any
+from unittest.mock import Mock, patch
 from uuid import uuid4
 
+import vroomrs
+
 from sentry.testutils.cases import APITestCase
 
 PROFILING_FEATURES = {"organizations:profiling": True}
@@ -14,3 +19,157 @@ def setUp(self) -> None:
     def test_feature_flag_disabled(self) -> None:
         response = self.get_response(self.project.organization.slug, self.project.id, str(uuid4()))
         assert response.status_code == 404
+
+
+class ProjectProfilingChunkAttachmentTest(APITestCase):
+    endpoint = "sentry-api-0-project-profiling-chunk-attachment"
+
+    def setUp(self) -> None:
+        self.login_as(user=self.user)
+        self.profiler_id = uuid4().hex
+        self.chunk_id = uuid4().hex
+        self.chunk_path = (
+            f"{self.organization.id}/{self.project.id}/{self.profiler_id}/{self.chunk_id}"
+        )
+
+    def get_attachment_response(self, attachment_name: str = "raw_profile") -> Any:
+        return self.get_response(
+            self.organization.slug,
+            self.project.slug,
+            self.profiler_id,
+            self.chunk_id,
+            attachment_name,
+        )
+
+    def make_chunk(self, attachments: list[vroomrs.Attachment]) -> Mock:
+        chunk = Mock()
+        chunk.get_attachments.return_value = attachments
+        return chunk
+
+    def make_storage(self, chunk_exists: bool, stored_files: dict[str, bytes]) -> Mock:
+        storage = Mock()
+        storage.exists.return_value = chunk_exists
+
+        def open_(path: str) -> BytesIO:
+            if path == self.chunk_path and chunk_exists:
+                return BytesIO(b"compressed-chunk")
+            if path in stored_files:
+                return BytesIO(stored_files[path])
+            raise OSError(f"no such object: {path}")
+
+        storage.open.side_effect = open_
+        return storage
+
+    def test_feature_flag_disabled(self) -> None:
+        response = self.get_attachment_response()
+        assert response.status_code == 404
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_download(self, mock_get_storage: Mock, mock_vroomrs: Mock) -> None:
+        storage = self.make_storage(True, {"aef123345": b"raw-profile-bytes"})
+        mock_get_storage.return_value = storage
+        mock_vroomrs.decompress_profile_chunk.return_value = self.make_chunk(
+            [
+                vroomrs.Attachment(
+                    name="raw_profile",
+                    content_type="application/x-perfetto-trace",
+                    stored_id="aef123345",
+                )
+            ]
+        )
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response()
+
+        assert response.status_code == 200
+        assert b"".join(response.streaming_content) == b"raw-profile-bytes"
+        assert response["Content-Type"] == "application/x-perfetto-trace"
+        assert response["Content-Disposition"] == 'attachment; filename="raw_profile"'
+        storage.exists.assert_called_once_with(self.chunk_path)
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_download_without_content_type_falls_back_to_octet_stream(
+        self, mock_get_storage: Mock, mock_vroomrs: Mock
+    ) -> None:
+        mock_get_storage.return_value = self.make_storage(True, {"aef123345": b"trace"})
+        mock_vroomrs.decompress_profile_chunk.return_value = self.make_chunk(
+            [vroomrs.Attachment(name="raw_profile", content_type=None, stored_id="aef123345")]
+        )
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response()
+
+        assert response.status_code == 200
+        assert response["Content-Type"] == "application/octet-stream"
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_unknown_attachment_name_returns_404(
+        self, mock_get_storage: Mock, mock_vroomrs: Mock
+    ) -> None:
+        mock_get_storage.return_value = self.make_storage(True, {"aef123345": b"trace"})
+        mock_vroomrs.decompress_profile_chunk.return_value = self.make_chunk(
+            [
+                vroomrs.Attachment(
+                    name="raw_profile",
+                    content_type="application/x-perfetto-trace",
+                    stored_id="aef123345",
+                )
+            ]
+        )
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response("some_other_attachment")
+
+        assert response.status_code == 404
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_chunk_without_attachments_returns_404(
+        self, mock_get_storage: Mock, mock_vroomrs: Mock
+    ) -> None:
+        mock_get_storage.return_value = self.make_storage(True, {})
+        mock_vroomrs.decompress_profile_chunk.return_value = self.make_chunk([])
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response()
+
+        assert response.status_code == 404
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_missing_chunk_returns_404(self, mock_get_storage: Mock, mock_vroomrs: Mock) -> None:
+        storage = self.make_storage(False, {})
+        mock_get_storage.return_value = storage
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response()
+
+        assert response.status_code == 404
+        storage.open.assert_not_called()
+        mock_vroomrs.decompress_profile_chunk.assert_not_called()
+
+    @patch("sentry.api.endpoints.project_profiling_profile.vroomrs")
+    @patch("sentry.api.endpoints.project_profiling_profile.get_profiles_storage")
+    def test_missing_attachment_file_returns_404(
+        self, mock_get_storage: Mock, mock_vroomrs: Mock
+    ) -> None:
+        # The attachment is referenced by the chunk but the file is gone from
+        # the object store.
+        mock_get_storage.return_value = self.make_storage(True, {})
+        mock_vroomrs.decompress_profile_chunk.return_value = self.make_chunk(
+            [
+                vroomrs.Attachment(
+                    name="raw_profile",
+                    content_type="application/x-perfetto-trace",
+                    stored_id="aef123345",
+                )
+            ]
+        )
+
+        with self.feature("organizations:continuous-profiling"):
+            response = self.get_attachment_response()
+
+        assert response.status_code == 404