diff --git a/api/v3/frontend_servicer.py b/api/v3/frontend_servicer.py
new file mode 100644
index 0000000..7374f1b
--- /dev/null
+++ b/api/v3/frontend_servicer.py
@@ -0,0 +1,107 @@
+# Copyright 2020 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+
+from api import resource_name_converters as rnc
+from api.v3 import monorail_servicer
+from api.v3.api_proto import frontend_pb2
+from api.v3.api_proto import project_objects_pb2
+from api.v3.api_proto import frontend_prpc_pb2
+from businesslogic import work_env
+
+
+class FrontendServicer(monorail_servicer.MonorailServicer):
+  """Handle frontend specific API requests.
+  Each API request is implemented with a method as defined in the
+  .proto file. Each method does any request-specific validation, uses work_env
+  to safely operate on business objects, and returns a response proto.
+  """
+
+  DESCRIPTION = frontend_prpc_pb2.FrontendServiceDescription
+
+  @monorail_servicer.PRPCMethod
+  def GatherProjectEnvironment(self, mc, request):
+    # type: (MonorailContext, GatherProjectEnvironmentRequest) ->
+    #     GatherProjectEnvironmentResponse
+    """pRPC API method that implements GatherProjectEnvironment.
+
+    Raises:
+      InputException if the project resource name provided is invalid.
+      NoSuchProjectException if the parent project is not found.
+      PermissionException if user is not allowed to view this project.
+    """
+
+    project_id = rnc.IngestProjectName(mc.cnxn, request.parent, self.services)
+
+    with work_env.WorkEnv(mc, self.services) as we:
+      project = we.GetProject(project_id)
+      project_config = we.GetProjectConfig(project_id)
+
+    api_project = self.converter.ConvertProject(project)
+    api_project_config = self.converter.ConvertProjectConfig(project_config)
+    api_status_defs = self.converter.ConvertStatusDefs(
+        project_config.well_known_statuses, project_id)
+    api_label_defs = self.converter.ConvertLabelDefs(
+        project_config.well_known_labels, project_id)
+    api_component_defs = self.converter.ConvertComponentDefs(
+        project_config.component_defs, project_id)
+    api_field_defs = self.converter.ConvertFieldDefs(
+        project_config.field_defs, project_id)
+    api_approval_defs = self.converter.ConvertApprovalDefs(
+        project_config.approval_defs, project_id)
+    saved_queries = self.services.features.GetCannedQueriesByProjectID(
+        mc.cnxn, project_id)
+    api_sqs = self.converter.ConvertProjectSavedQueries(
+        saved_queries, project_id)
+
+    return frontend_pb2.GatherProjectEnvironmentResponse(
+        project=api_project,
+        project_config=api_project_config,
+        statuses=api_status_defs,
+        well_known_labels=api_label_defs,
+        components=api_component_defs,
+        fields=api_field_defs,
+        approval_fields=api_approval_defs,
+        saved_queries=api_sqs)
+
+  @monorail_servicer.PRPCMethod
+  def GatherProjectMembershipsForUser(self, mc, request):
+    # type: (MonorailContext, GatherProjectMembershipsForUserRequest) ->
+    #     GatherProjectMembershipsForUserResponse
+    """pRPC API method that implements GatherProjectMembershipsForUser.
+
+    Raises:
+      NoSuchUserException if the user is not found.
+      InputException if the user resource name is invalid.
+    """
+
+    user_id = rnc.IngestUserName(mc.cnxn, request.user, self.services)
+
+    project_memberships = []
+
+    with work_env.WorkEnv(mc, self.services) as we:
+      owner, committer, contributor = we.GatherProjectMembershipsForUser(
+          user_id)
+
+    for project_id in owner:
+      project_member = self.converter.CreateProjectMember(
+          mc.cnxn, project_id, user_id, 'OWNER')
+      project_memberships.append(project_member)
+
+    for project_id in committer:
+      project_member = self.converter.CreateProjectMember(
+          mc.cnxn, project_id, user_id, 'COMMITTER')
+      project_memberships.append(project_member)
+
+    for project_id in contributor:
+      project_member = self.converter.CreateProjectMember(
+          mc.cnxn, project_id, user_id, 'CONTRIBUTOR')
+      project_memberships.append(project_member)
+
+    return frontend_pb2.GatherProjectMembershipsForUserResponse(
+        project_memberships=project_memberships)