diff --git a/platformio/package/commands/install.py b/platformio/package/commands/install.py
index c5b4478b..f7c85160 100644
--- a/platformio/package/commands/install.py
+++ b/platformio/package/commands/install.py
@@ -115,9 +115,7 @@ def install_project_env_dependencies(project_env, options=None):
         )
     # custom tools
     if options.get("tools"):
-        installed_conds.append(
-            _install_project_env_custom_tools(project_env, options)
-        )
+        installed_conds.append(_install_project_env_custom_tools(project_env, options))
     # custom ibraries
     if options.get("libraries"):
         installed_conds.append(
@@ -176,14 +174,25 @@ def _install_project_env_custom_tools(project_env, options):
     tm = ToolPackageManager()
     if not options.get("silent"):
         tm.set_log_level(logging.DEBUG)
-    for spec in options.get("tools"):
+    specs_to_save = []
+    for tool in options.get("tools"):
+        spec = PackageSpec(tool)
         if not tm.get_package(spec):
             already_up_to_date = False
-        tm.install(
+        pkg = tm.install(
             spec,
             skip_dependencies=options.get("skip_dependencies"),
             force=options.get("force"),
         )
+        specs_to_save.append(_pkg_to_save_spec(pkg, spec))
+    if not options.get("no_save") and specs_to_save:
+        save_project_dependencies(
+            os.getcwd(),
+            specs_to_save,
+            scope="platform_packages",
+            action="add",
+            environments=[project_env],
+        )
     return not already_up_to_date
 
 
diff --git a/tests/commands/pkg/test_install.py b/tests/commands/pkg/test_install.py
index fc853da3..64b4803e 100644
--- a/tests/commands/pkg/test_install.py
+++ b/tests/commands/pkg/test_install.py
@@ -179,6 +179,7 @@ def test_custom_project_libraries(
         # do not expect any platforms/tools
         assert not os.path.exists(config.get("platformio", "platforms_dir"))
         assert not os.path.exists(config.get("platformio", "packages_dir"))
+
         # check saved deps
         assert config.get("env:devkit", "lib_deps") == [
             "bblanchon/ArduinoJson@^6.19.2",
@@ -249,6 +250,26 @@ def test_custom_project_tools(
         # do not expect any platforms
         assert not os.path.exists(config.get("platformio", "platforms_dir"))
 
+        # check saved deps
+        assert config.get("env:devkit", "platform_packages") == [
+            "platformio/tool-openocd@^2.1100.211028",
+        ]
+
+        # install tool without saving to config
+        result = clirunner.invoke(
+            package_install_cmd,
+            ["-e", "devkit", "-t", "platformio/tool-esptoolpy@1.20310.0", "--no-save"],
+        )
+        validate_cliresult(result)
+        config = ProjectConfig()
+        assert pkgs_to_names(ToolPackageManager().get_installed()) == [
+            "tool-esptoolpy",
+            "tool-openocd",
+        ]
+        assert config.get("env:devkit", "platform_packages") == [
+            "platformio/tool-openocd@^2.1100.211028",
+        ]
+
         # unknown tool
         result = clirunner.invoke(
             package_install_cmd, ["-t", "platformio/unknown_tool"]
diff --git a/tests/project/test_savedeps.py b/tests/project/test_savedeps.py
index 5861bf84..9740ce71 100644
--- a/tests/project/test_savedeps.py
+++ b/tests/project/test_savedeps.py
@@ -22,20 +22,25 @@ board = uno
 framework = arduino
 lib_deps =
     SPI
+platform_packages =
+    platformio/tool-jlink@^1.75001.0
 
 [env:bare]
 
 [env:release]
-platform = platformio/atmelavr
+platform = platformio/espressif32
 lib_deps =
     milesburton/DallasTemperature@^3.8
 
 [env:debug]
-platform = platformio/atmelavr@^3.4.0
+platform = platformio/espressif32@^3.4.0
 lib_deps =
     ${env.lib_deps}
     milesburton/DallasTemperature@^3.9.1
     bblanchon/ArduinoJson
+platform_packages =
+    ${env.platform_packages}
+    platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git
 """
 
 
@@ -124,3 +129,96 @@ def test_save_libraries(tmp_path):
     ]
     assert config.get("env:bare", "lib_deps") == ["SPI"]
     assert config.get("env:release", "lib_deps") == ["SPI"]
+
+
+def test_save_tools(tmp_path):
+    project_dir = tmp_path / "project"
+    project_dir.mkdir()
+    (project_dir / "platformio.ini").write_text(PROJECT_CONFIG_TPL)
+    specs = [
+        PackageSpec("platformio/framework-espidf@^2"),
+        PackageSpec("platformio/tool-esptoolpy"),
+    ]
+
+    # add to the sepcified environment
+    save_project_dependencies(
+        str(project_dir),
+        specs,
+        scope="platform_packages",
+        action="add",
+        environments=["debug"],
+    )
+    config = ProjectConfig.get_instance(str(project_dir / "platformio.ini"))
+    assert config.get("env:debug", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0",
+        "platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git",
+        "platformio/framework-espidf@^2",
+        "platformio/tool-esptoolpy",
+    ]
+    assert config.get("env:bare", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0"
+    ]
+    assert config.get("env:release", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0"
+    ]
+
+    # add to the the all environments
+    save_project_dependencies(
+        str(project_dir), specs, scope="platform_packages", action="add"
+    )
+    config = ProjectConfig.get_instance(str(project_dir / "platformio.ini"))
+    assert config.get("env:debug", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0",
+        "platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git",
+        "platformio/framework-espidf@^2",
+        "platformio/tool-esptoolpy",
+    ]
+    assert config.get("env:bare", "platform_packages") == [
+        "platformio/framework-espidf@^2",
+        "platformio/tool-esptoolpy",
+    ]
+    assert config.get("env:release", "platform_packages") == [
+        "platformio/framework-espidf@^2",
+        "platformio/tool-esptoolpy",
+    ]
+
+    # remove deps from env
+    save_project_dependencies(
+        str(project_dir),
+        [PackageSpec("platformio/framework-espidf")],
+        scope="platform_packages",
+        action="remove",
+        environments=["release"],
+    )
+    config = ProjectConfig.get_instance(str(project_dir / "platformio.ini"))
+    assert config.get("env:release", "platform_packages") == [
+        "platformio/tool-esptoolpy",
+    ]
+    # invalid requirements
+    save_project_dependencies(
+        str(project_dir),
+        [PackageSpec("platformio/tool-esptoolpy@9.9.9")],
+        scope="platform_packages",
+        action="remove",
+        environments=["release"],
+    )
+    config = ProjectConfig.get_instance(str(project_dir / "platformio.ini"))
+    assert config.get("env:release", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0",
+    ]
+
+    # remove deps from all envs
+    save_project_dependencies(
+        str(project_dir), specs, scope="platform_packages", action="remove"
+    )
+    config = ProjectConfig.get_instance(str(project_dir / "platformio.ini"))
+    assert config.get("env:debug", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0",
+        "platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git",
+    ]
+    assert config.get("env:bare", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0"
+    ]
+    assert config.get("env:release", "platform_packages") == [
+        "platformio/tool-jlink@^1.75001.0"
+    ]