diff --git a/platformio/clients/registry.py b/platformio/clients/registry.py
index 5936d2e9..1a3626de 100644
--- a/platformio/clients/registry.py
+++ b/platformio/clients/registry.py
@@ -74,3 +74,23 @@ class RegistryClient(RESTClient):
             "delete", path, params={"undo": 1 if undo else 0},
         )
         return response
+
+    def update_resource(self, urn, private):
+        return self.send_auth_request(
+            "put", "/v3/resources/%s" % urn, data={"private": int(private)},
+        )
+
+    def grant_access_for_resource(self, urn, client, level):
+        return self.send_auth_request(
+            "put",
+            "/v3/resources/%s/access" % urn,
+            data={"client": client, "level": level},
+        )
+
+    def revoke_access_from_resource(self, urn, client):
+        return self.send_auth_request(
+            "delete", "/v3/resources/%s/access" % urn, data={"client": client},
+        )
+
+    def list_own_resources(self):
+        return self.send_auth_request("get", "/v3/resources",)
diff --git a/platformio/commands/access.py b/platformio/commands/access.py
new file mode 100644
index 00000000..92efce28
--- /dev/null
+++ b/platformio/commands/access.py
@@ -0,0 +1,137 @@
+# Copyright (c) 2014-present PlatformIO <contact@platformio.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# pylint: disable=unused-argument
+
+import json
+import re
+
+import click
+from tabulate import tabulate
+
+from platformio.clients.registry import RegistryClient
+from platformio.commands.account import validate_username
+from platformio.commands.team import validate_orgname_teamname
+
+
+def validate_client(value):
+    if ":" in value:
+        validate_orgname_teamname(value)
+    else:
+        validate_username(value)
+    return value
+
+
+@click.group("access", short_help="Manage Resource Access")
+def cli():
+    pass
+
+
+def validate_urn(value):
+    value = str(value).strip()
+    if not re.match(r"^reg:pkg:(\d+)$", value, flags=re.I):
+        raise click.BadParameter("Invalid URN format.")
+    return value
+
+
+@cli.command("public", short_help="Make resource public")
+@click.argument(
+    "urn", callback=lambda _, __, value: validate_urn(value),
+)
+@click.option("--urn-type", type=click.Choice(["urn:reg:pkg"]), default="urn:reg:pkg")
+def access_public(urn, urn_type):
+    client = RegistryClient()
+    client.update_resource(urn=urn, private=0)
+    return click.secho(
+        "The resource %s has been successfully updated." % urn, fg="green",
+    )
+
+
+@cli.command("private", short_help="Make resource private")
+@click.argument(
+    "urn", callback=lambda _, __, value: validate_urn(value),
+)
+@click.option("--urn-type", type=click.Choice(["urn:reg:pkg"]), default="urn:reg:pkg")
+def access_private(urn, urn_type):
+    client = RegistryClient()
+    client.update_resource(urn=urn, private=1)
+    return click.secho(
+        "The resource %s has been successfully updated." % urn, fg="green",
+    )
+
+
+@cli.command("grant", short_help="Grant access")
+@click.argument("level", type=click.Choice(["admin", "maintainer", "guest"]))
+@click.argument(
+    "client",
+    metavar="[ORGNAME:TEAMNAME|USERNAME]",
+    callback=lambda _, __, value: validate_client(value),
+)
+@click.argument(
+    "urn", callback=lambda _, __, value: validate_urn(value),
+)
+@click.option("--urn-type", type=click.Choice(["urn:reg:pkg"]), default="urn:reg:pkg")
+def access_grant(level, client, urn, urn_type):
+    reg_client = RegistryClient()
+    reg_client.grant_access_for_resource(urn=urn, client=client, level=level)
+    return click.secho(
+        "Access for resource %s has been granted for %s" % (urn, client), fg="green",
+    )
+
+
+@cli.command("revoke", short_help="Revoke access")
+@click.argument(
+    "client",
+    metavar="[ORGNAME:TEAMNAME|USERNAME]",
+    callback=lambda _, __, value: validate_client(value),
+)
+@click.argument(
+    "urn", callback=lambda _, __, value: validate_urn(value),
+)
+@click.option("--urn-type", type=click.Choice(["urn:reg:pkg"]), default="urn:reg:pkg")
+def access_revoke(client, urn, urn_type):
+    reg_client = RegistryClient()
+    reg_client.revoke_access_from_resource(urn=urn, client=client)
+    return click.secho(
+        "Access for resource %s has been revoked for %s" % (urn, client), fg="green",
+    )
+
+
+@cli.command("list", short_help="List resources")
+@click.option("--urn-type", type=click.Choice(["urn:reg:pkg"]), default="urn:reg:pkg")
+@click.option("--json-output", is_flag=True)
+def access_list(urn_type, json_output):
+    reg_client = RegistryClient()
+    resources = reg_client.list_own_resources()
+    if json_output:
+        return click.echo(json.dumps(resources))
+    if not resources:
+        return click.secho("You do not have any resources.", fg="yellow")
+    for resource in resources:
+        click.echo()
+        click.secho(resource.get("name"), fg="cyan")
+        click.echo("-" * len(resource.get("name")))
+        table_data = []
+        table_data.append(("URN:", resource.get("urn")))
+        table_data.append(("Owner:", resource.get("owner")))
+        table_data.append(
+            (
+                "Access level(s):",
+                ", ".join(
+                    (level.capitalize() for level in resource.get("access_levels"))
+                ),
+            )
+        )
+        click.echo(tabulate(table_data, tablefmt="plain"))
+    return click.echo()
diff --git a/tests/commands/test_account_org_team.py b/tests/commands/test_account_org_team.py
index b4e576f0..297e4c12 100644
--- a/tests/commands/test_account_org_team.py
+++ b/tests/commands/test_account_org_team.py
@@ -21,10 +21,7 @@ import requests
 
 from platformio.commands.account import cli as cmd_account
 from platformio.commands.org import cli as cmd_org
-from platformio.commands.package import cli as cmd_package
 from platformio.commands.team import cli as cmd_team
-from platformio.downloader import FileDownloader
-from platformio.unpacker import FileUnpacker
 
 pytestmark = pytest.mark.skipif(
     not (os.environ.get("TEST_EMAIL_LOGIN") and os.environ.get("TEST_EMAIL_PASSWORD")),