diff --git a/src/api/json/catalog.json b/src/api/json/catalog.json
index ebcffee18d3..5ae6e5ef25c 100644
--- a/src/api/json/catalog.json
+++ b/src/api/json/catalog.json
@@ -6351,6 +6351,12 @@
       "fileMatch": ["tombi.toml", "**/tombi/config.toml"],
       "url": "https://www.schemastore.org/tombi.json"
     },
+    {
+      "name": "tox",
+      "description": "tox configuration for automating Python testing and task management",
+      "fileMatch": ["tox.toml"],
+      "url": "https://raw.githubusercontent.com/tox-dev/tox/main/src/tox/tox.schema.json"
+    },
     {
       "name": "TextMate Grammar",
       "description": "Language grammar description files for TextMate and compatible editors",
diff --git a/src/negative_test/tox/tox-invalid-type.toml b/src/negative_test/tox/tox-invalid-type.toml
new file mode 100644
index 00000000000..ffe9558c590
--- /dev/null
+++ b/src/negative_test/tox/tox-invalid-type.toml
@@ -0,0 +1,2 @@
+#:schema ../../schemas/json/tox.json
+env_list = 42
diff --git a/src/schema-validation.jsonc b/src/schema-validation.jsonc
index 003dfae688f..76f83095ccb 100644
--- a/src/schema-validation.jsonc
+++ b/src/schema-validation.jsonc
@@ -328,6 +328,7 @@
     "partial-poetry.json", // pyproject.json[tool.poetry]
     "partial-repo-review.json", // pyproject.json[tool.repo-review]
     "partial-tox.json", // pyproject.json[tool.tox]
+    "tox.json",
     "partial-eslint-plugins.json", // eslintrc.json[rules.*]
     "partial-fusion-pack-metadata.json", // minecraft-pack-mcmeta.json[fusion]
     "partial-fusion-texture-metadata.json", // minecraft-texture-mcmeta.json[fusion]
@@ -1096,6 +1097,9 @@
     "partial-pdm.json": {
       "externalSchema": ["partial-pdm-dockerize.json"]
     },
+    "partial-tox.json": {
+      "externalSchema": ["tox.json"]
+    },
     "partial-poetry.json": {
       "externalSchema": ["base.json"]
     },
@@ -1182,6 +1186,7 @@
         "partial-setuptools-scm.json",
         "partial-taskipy.json",
         "partial-tox.json",
+        "tox.json",
         "poetry.json",
         "ruff.json",
         "tombi.json",
diff --git a/src/schemas/json/partial-tox.json b/src/schemas/json/partial-tox.json
index f2fb0db0d13..77526f1f046 100644
--- a/src/schemas/json/partial-tox.json
+++ b/src/schemas/json/partial-tox.json
@@ -4,7 +4,11 @@
   "title": "Tox configuration in pyproject.toml",
   "description": "Schema for the [tool.tox] section in pyproject.toml",
   "type": "object",
-  "additionalProperties": true,
+  "allOf": [
+    {
+      "$ref": "https://json.schemastore.org/tox.json"
+    }
+  ],
   "properties": {
     "legacy_tox_ini": {
       "type": "string",
diff --git a/src/schemas/json/tox.json b/src/schemas/json/tox.json
new file mode 100644
index 00000000000..ceaed5ee529
--- /dev/null
+++ b/src/schemas/json/tox.json
@@ -0,0 +1,706 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://json.schemastore.org/tox.json",
+  "title": "tox configuration",
+  "description": "tox configuration file (tox.toml or [tool.tox] in pyproject.toml)",
+  "x-taplo": {
+    "links": {
+      "key": "https://tox.wiki/en/stable/config.html"
+    }
+  },
+  "type": "object",
+  "properties": {
+    "tox_root": {
+      "type": "string",
+      "description": "the root directory (where the configuration file is found)"
+    },
+    "toxinidir": {
+      "$ref": "#/properties/tox_root",
+      "description": "Deprecated: use 'tox_root' instead",
+      "deprecated": true
+    },
+    "work_dir": {
+      "type": "string",
+      "description": "working directory"
+    },
+    "toxworkdir": {
+      "$ref": "#/properties/work_dir",
+      "description": "Deprecated: use 'work_dir' instead",
+      "deprecated": true
+    },
+    "temp_dir": {
+      "type": "string",
+      "description": "a folder for temporary files (is not cleaned at start)"
+    },
+    "env_list": {
+      "type": "array",
+      "items": {
+        "oneOf": [
+          {
+            "$ref": "#/definitions/subs"
+          },
+          {
+            "type": "object",
+            "required": ["product"],
+            "properties": {
+              "product": {
+                "type": "array",
+                "items": {
+                  "oneOf": [
+                    {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      }
+                    },
+                    {
+                      "type": "object",
+                      "required": ["prefix"],
+                      "properties": {
+                        "prefix": {
+                          "type": "string"
+                        },
+                        "start": {
+                          "type": "integer"
+                        },
+                        "stop": {
+                          "type": "integer"
+                        }
+                      },
+                      "additionalProperties": false
+                    }
+                  ]
+                },
+                "description": "factor groups for cartesian product expansion"
+              },
+              "exclude": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "environment names to exclude from product"
+              }
+            },
+            "additionalProperties": false
+          }
+        ]
+      },
+      "description": "define environments to automatically run"
+    },
+    "envlist": {
+      "$ref": "#/properties/env_list",
+      "description": "Deprecated: use 'env_list' instead",
+      "deprecated": true
+    },
+    "base": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/subs"
+      },
+      "description": "inherit missing keys from these sections"
+    },
+    "min_version": {
+      "type": "string",
+      "description": "Define the minimal tox version required to run"
+    },
+    "minversion": {
+      "$ref": "#/properties/min_version",
+      "description": "Deprecated: use 'min_version' instead",
+      "deprecated": true
+    },
+    "provision_tox_env": {
+      "type": "string",
+      "description": "Name of the virtual environment used to provision a tox."
+    },
+    "requires": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/subs"
+      },
+      "description": "Name of the virtual environment used to provision a tox."
+    },
+    "labels": {
+      "type": "object",
+      "additionalProperties": {
+        "type": "array",
+        "items": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/subs"
+            },
+            {
+              "type": "object",
+              "required": ["product"],
+              "properties": {
+                "product": {
+                  "type": "array",
+                  "items": {
+                    "oneOf": [
+                      {
+                        "type": "array",
+                        "items": {
+                          "type": "string"
+                        }
+                      },
+                      {
+                        "type": "object",
+                        "required": ["prefix"],
+                        "properties": {
+                          "prefix": {
+                            "type": "string"
+                          },
+                          "start": {
+                            "type": "integer"
+                          },
+                          "stop": {
+                            "type": "integer"
+                          }
+                        },
+                        "additionalProperties": false
+                      }
+                    ]
+                  },
+                  "description": "factor groups for cartesian product expansion"
+                },
+                "exclude": {
+                  "type": "array",
+                  "items": {
+                    "type": "string"
+                  },
+                  "description": "environment names to exclude from product"
+                }
+              },
+              "additionalProperties": false
+            }
+          ]
+        }
+      },
+      "description": "core labels"
+    },
+    "ignore_base_python_conflict": {
+      "type": "boolean",
+      "description": "do not raise error if the environment name conflicts with base python"
+    },
+    "ignore_basepython_conflict": {
+      "$ref": "#/properties/ignore_base_python_conflict",
+      "description": "Deprecated: use 'ignore_base_python_conflict' instead",
+      "deprecated": true
+    },
+    "skip_missing_interpreters": {
+      "type": "boolean",
+      "description": "skip running missing interpreters"
+    },
+    "no_package": {
+      "type": "boolean",
+      "description": "is there any packaging involved in this project"
+    },
+    "skipsdist": {
+      "$ref": "#/properties/no_package",
+      "description": "Deprecated: use 'no_package' instead",
+      "deprecated": true
+    },
+    "package_env": {
+      "type": "string",
+      "description": "tox environment used to package"
+    },
+    "isolated_build_env": {
+      "$ref": "#/properties/package_env",
+      "description": "Deprecated: use 'package_env' instead",
+      "deprecated": true
+    },
+    "package_root": {
+      "type": "string",
+      "description": "indicates where the packaging root file exists (historically setup.py file or pyproject.toml now)"
+    },
+    "setupdir": {
+      "$ref": "#/properties/package_root",
+      "description": "Deprecated: use 'package_root' instead",
+      "deprecated": true
+    },
+    "env_run_base": {
+      "type": "object",
+      "description": "base configuration for run environments",
+      "x-taplo": {
+        "links": {
+          "key": "https://tox.wiki/en/stable/config.html#run-environment"
+        }
+      },
+      "properties": {
+        "set_env": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "environment variables to set when running commands in the tox environment"
+        },
+        "setenv": {
+          "$ref": "#/properties/env_run_base/properties/set_env",
+          "description": "Deprecated: use 'set_env' instead",
+          "deprecated": true
+        },
+        "base": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "inherit missing keys from these sections"
+        },
+        "runner": {
+          "type": "string",
+          "description": "the tox execute used to evaluate this environment"
+        },
+        "description": {
+          "type": "string",
+          "description": "description attached to the tox environment"
+        },
+        "depends": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              {
+                "$ref": "#/definitions/subs"
+              },
+              {
+                "type": "object",
+                "required": ["product"],
+                "properties": {
+                  "product": {
+                    "type": "array",
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "array",
+                          "items": {
+                            "type": "string"
+                          }
+                        },
+                        {
+                          "type": "object",
+                          "required": ["prefix"],
+                          "properties": {
+                            "prefix": {
+                              "type": "string"
+                            },
+                            "start": {
+                              "type": "integer"
+                            },
+                            "stop": {
+                              "type": "integer"
+                            }
+                          },
+                          "additionalProperties": false
+                        }
+                      ]
+                    },
+                    "description": "factor groups for cartesian product expansion"
+                  },
+                  "exclude": {
+                    "type": "array",
+                    "items": {
+                      "type": "string"
+                    },
+                    "description": "environment names to exclude from product"
+                  }
+                },
+                "additionalProperties": false
+              }
+            ]
+          },
+          "description": "tox environments that this environment depends on (must be run after those)"
+        },
+        "labels": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "labels attached to the tox environment"
+        },
+        "env_dir": {
+          "type": "string",
+          "description": "directory assigned to the tox environment"
+        },
+        "envdir": {
+          "$ref": "#/properties/env_run_base/properties/env_dir",
+          "description": "Deprecated: use 'env_dir' instead",
+          "deprecated": true
+        },
+        "env_tmp_dir": {
+          "type": "string",
+          "description": "a folder that is always reset at the start of the run"
+        },
+        "envtmpdir": {
+          "$ref": "#/properties/env_run_base/properties/env_tmp_dir",
+          "description": "Deprecated: use 'env_tmp_dir' instead",
+          "deprecated": true
+        },
+        "env_log_dir": {
+          "type": "string",
+          "description": "a folder for logging where tox will put logs of tool invocation"
+        },
+        "envlogdir": {
+          "$ref": "#/properties/env_run_base/properties/env_log_dir",
+          "description": "Deprecated: use 'env_log_dir' instead",
+          "deprecated": true
+        },
+        "suicide_timeout": {
+          "type": "number",
+          "description": "timeout to allow process to exit before sending SIGINT"
+        },
+        "interrupt_timeout": {
+          "type": "number",
+          "description": "timeout before sending SIGTERM after SIGINT"
+        },
+        "terminate_timeout": {
+          "type": "number",
+          "description": "timeout before sending SIGKILL after SIGTERM"
+        },
+        "platform": {
+          "type": "string",
+          "description": "run on platforms that match this regular expression (empty means any platform)"
+        },
+        "pass_env": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "environment variables to pass on to the tox environment"
+        },
+        "passenv": {
+          "$ref": "#/properties/env_run_base/properties/pass_env",
+          "description": "Deprecated: use 'pass_env' instead",
+          "deprecated": true
+        },
+        "disallow_pass_env": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "environment variable patterns to exclude after pass_env glob expansion"
+        },
+        "parallel_show_output": {
+          "type": "boolean",
+          "description": "if set to True the content of the output will always be shown  when running in parallel mode"
+        },
+        "recreate": {
+          "type": "boolean",
+          "description": "always recreate virtual environment if this option is true, otherwise leave it up to tox"
+        },
+        "allowlist_externals": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "external command glob to allow calling"
+        },
+        "list_dependencies_command": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "command used to list installed packages"
+        },
+        "pip_pre": {
+          "type": "boolean",
+          "description": "install the latest available pre-release (alpha/beta/rc) of dependencies without a specified version"
+        },
+        "install_command": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "command used to install packages"
+        },
+        "constraints": {
+          "type": "string",
+          "description": "constraints to apply to installed python dependencies"
+        },
+        "constrain_package_deps": {
+          "type": "boolean",
+          "description": "If true, apply constraints during install_package_deps."
+        },
+        "use_frozen_constraints": {
+          "type": "boolean",
+          "description": "Use the exact versions of installed deps as constraints, otherwise use the listed deps."
+        },
+        "commands_pre": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": {
+              "$ref": "#/definitions/subs"
+            }
+          },
+          "description": "the commands to be called before testing"
+        },
+        "commands": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": {
+              "$ref": "#/definitions/subs"
+            }
+          },
+          "description": "the commands to be called for testing"
+        },
+        "commands_post": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": {
+              "$ref": "#/definitions/subs"
+            }
+          },
+          "description": "the commands to be called after testing"
+        },
+        "recreate_commands": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": {
+              "$ref": "#/definitions/subs"
+            }
+          },
+          "description": "commands to run before the environment is removed during recreation (e.g. cache cleanup)"
+        },
+        "change_dir": {
+          "type": "string",
+          "description": "change to this working directory when executing the test command"
+        },
+        "changedir": {
+          "$ref": "#/properties/env_run_base/properties/change_dir",
+          "description": "Deprecated: use 'change_dir' instead",
+          "deprecated": true
+        },
+        "args_are_paths": {
+          "type": "boolean",
+          "description": "if True rewrite relative posargs paths from cwd to change_dir"
+        },
+        "ignore_errors": {
+          "type": "boolean",
+          "description": "when executing the commands keep going even if a sub-command exits with non-zero exit code"
+        },
+        "commands_retry": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "number of times to retry a failed command (0 means no retries)"
+        },
+        "ignore_outcome": {
+          "type": "boolean",
+          "description": "if set to true a failing result of this testenv will not make tox fail (instead just warn)"
+        },
+        "fail_fast": {
+          "type": "boolean",
+          "description": "if set to true, tox will stop executing remaining environments when this environment fails"
+        },
+        "default_base_python": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "fallback python interpreter used when no factor or explicit base_python is defined"
+        },
+        "base_python": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "environment identifier for python, first one found wins"
+        },
+        "basepython": {
+          "$ref": "#/properties/env_run_base/properties/base_python",
+          "description": "Deprecated: use 'base_python' instead",
+          "deprecated": true
+        },
+        "deps": {
+          "type": "string",
+          "description": "python dependencies with optional version specifiers, as specified by PEP-440"
+        },
+        "dependency_groups": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "dependency groups to install of the target package"
+        },
+        "extras": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/subs"
+          },
+          "description": "extras to install of the target package"
+        },
+        "pylock": {
+          "type": "string",
+          "description": "PEP 751 pylock.toml lock file path to install locked dependencies from"
+        },
+        "extra_setup_commands": {
+          "type": "array",
+          "items": {
+            "type": "array",
+            "items": {
+              "$ref": "#/definitions/subs"
+            }
+          },
+          "description": "commands to execute after setup (deps and package install) but before test commands"
+        },
+        "skip_missing_interpreters": {
+          "type": "boolean",
+          "description": "override core skip_missing_interpreters for this environment"
+        },
+        "system_site_packages": {
+          "type": "boolean",
+          "description": "create virtual environments that also have access to globally installed packages."
+        },
+        "sitepackages": {
+          "$ref": "#/properties/env_run_base/properties/system_site_packages",
+          "description": "Deprecated: use 'system_site_packages' instead",
+          "deprecated": true
+        },
+        "always_copy": {
+          "type": "boolean",
+          "description": "force virtualenv to always copy rather than symlink"
+        },
+        "alwayscopy": {
+          "$ref": "#/properties/env_run_base/properties/always_copy",
+          "description": "Deprecated: use 'always_copy' instead",
+          "deprecated": true
+        },
+        "download": {
+          "type": "boolean",
+          "description": "true if you want virtualenv to upgrade pip/wheel/setuptools to the latest version"
+        },
+        "virtualenv_spec": {
+          "type": "string",
+          "description": "PEP 440 version spec for virtualenv (e.g. virtualenv<20.22.0). When set, tox bootstraps this version in an isolated environment and runs it via subprocess, enabling Python versions incompatible with the installed virtualenv."
+        },
+        "skip_install": {
+          "type": "boolean",
+          "description": "skip installation"
+        },
+        "use_develop": {
+          "type": "boolean",
+          "description": "use develop mode"
+        },
+        "usedevelop": {
+          "$ref": "#/properties/env_run_base/properties/use_develop",
+          "description": "Deprecated: use 'use_develop' instead",
+          "deprecated": true
+        },
+        "package": {
+          "type": "string",
+          "description": "package installation mode - wheel | sdist | sdist-wheel | editable | editable-legacy | deps-only | skip | external "
+        },
+        "package_env": {
+          "type": "string",
+          "description": "tox environment used to package"
+        }
+      },
+      "additionalProperties": true
+    },
+    "env_pkg_base": {
+      "$ref": "#/properties/env_run_base",
+      "type": "object",
+      "description": "base configuration for packaging environments",
+      "x-taplo": {
+        "links": {
+          "key": "https://tox.wiki/en/stable/config.html#packaging-environment"
+        }
+      },
+      "additionalProperties": true
+    },
+    "env": {
+      "type": "object",
+      "description": "per-environment overrides (keyed by environment name)",
+      "x-taplo": {
+        "links": {
+          "key": "https://tox.wiki/en/stable/config.html#run-environment"
+        }
+      },
+      "patternProperties": {
+        "^.*$": {
+          "$ref": "#/properties/env_run_base"
+        }
+      }
+    },
+    "legacy_tox_ini": {
+      "type": "string",
+      "description": "tox configuration in INI format embedded in a TOML file",
+      "x-taplo": {
+        "links": {
+          "key": "https://tox.wiki/en/stable/config.html#pyproject-toml-ini"
+        }
+      }
+    }
+  },
+  "additionalProperties": true,
+  "definitions": {
+    "subs": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "object",
+          "properties": {
+            "replace": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            },
+            "default": {
+              "oneOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/definitions/subs"
+                  }
+                }
+              ]
+            },
+            "extend": {
+              "type": "boolean"
+            }
+          },
+          "required": ["replace"],
+          "additionalProperties": false
+        },
+        {
+          "type": "object",
+          "properties": {
+            "replace": {
+              "type": "string"
+            },
+            "of": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            "default": {
+              "oneOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/definitions/subs"
+                  }
+                }
+              ]
+            },
+            "extend": {
+              "type": "boolean"
+            }
+          },
+          "required": ["replace", "of"],
+          "additionalProperties": false
+        }
+      ]
+    }
+  }
+}
diff --git a/src/test/pyproject/tox-toml-config.toml b/src/test/pyproject/tox-toml-config.toml
new file mode 100644
index 00000000000..9d08b9e64c3
--- /dev/null
+++ b/src/test/pyproject/tox-toml-config.toml
@@ -0,0 +1,9 @@
+#:schema ../../schemas/json/pyproject.json
+[tool.tox]
+env_list = ["py"]
+no_package = true
+
+[tool.tox.env_run_base]
+description = "run tests"
+deps = "pytest"
+commands = [["python", "-m", "pytest"]]
diff --git a/src/test/tox/tox-full.toml b/src/test/tox/tox-full.toml
new file mode 100644
index 00000000000..e4a8bf128dd
--- /dev/null
+++ b/src/test/tox/tox-full.toml
@@ -0,0 +1,15 @@
+#:schema ../../schemas/json/tox.json
+env_list = ["py", "lint"]
+min_version = "4.0"
+no_package = true
+
+[env_run_base]
+description = "run tests"
+deps = "pytest"
+commands = [["python", "-m", "pytest"]]
+pass_env = ["HOME", "CI"]
+set_env = { PYTHONDONTWRITEBYTECODE = "1" }
+
+[env.lint]
+description = "run linters"
+commands = [["python", "-m", "flake8"]]
diff --git a/src/test/tox/tox-minimal.toml b/src/test/tox/tox-minimal.toml
new file mode 100644
index 00000000000..bd50849b3e2
--- /dev/null
+++ b/src/test/tox/tox-minimal.toml
@@ -0,0 +1,2 @@
+#:schema ../../schemas/json/tox.json
+env_list = ["py"]
diff --git a/src/test/tox/tox-product.toml b/src/test/tox/tox-product.toml
new file mode 100644
index 00000000000..b1b8639e63d
--- /dev/null
+++ b/src/test/tox/tox-product.toml
@@ -0,0 +1,8 @@
+#:schema ../../schemas/json/tox.json
+env_list = [
+  { product = [["py39", "py310"], ["django42", "django50"]], exclude = ["py39-django50"] }
+]
+no_package = true
+
+[env_run_base]
+commands = [["python", "-m", "pytest"]]