diff --git a/ddev/src/ddev/ai/tools/registry.py b/ddev/src/ddev/ai/tools/registry.py
index f8249bfb7fd93..3fd255f7bda1b 100644
--- a/ddev/src/ddev/ai/tools/registry.py
+++ b/ddev/src/ddev/ai/tools/registry.py
@@ -70,6 +70,7 @@ class ToolSpec:
     "ddev_env_stop": ToolSpec("shell.ddev.env_stop", "DdevEnvStopTool"),
     "ddev_env_test": ToolSpec("shell.ddev.env_test", "DdevEnvTestTool"),
     "ddev_release_changelog": ToolSpec("shell.ddev.release_changelog", "DdevReleaseChangelogTool"),
+    "ddev_validate": ToolSpec("shell.ddev.validate", "DdevValidateTool"),
 }
 
 
diff --git a/ddev/src/ddev/ai/tools/shell/ddev/validate.py b/ddev/src/ddev/ai/tools/shell/ddev/validate.py
new file mode 100644
index 0000000000000..0f49834fdf384
--- /dev/null
+++ b/ddev/src/ddev/ai/tools/shell/ddev/validate.py
@@ -0,0 +1,55 @@
+# (C) Datadog, Inc. 2026-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from typing import Annotated, Literal
+
+from pydantic import Field
+
+from ddev.ai.tools.core.base import BaseToolInput
+from ddev.ai.tools.shell.base import CmdTool
+
+ValidateSubcommand = Literal["config", "models", "metadata"]
+
+
+class DdevValidateInput(BaseToolInput):
+    subcommand: Annotated[
+        ValidateSubcommand,
+        Field(
+            description=(
+                "Which validator to run. "
+                "'config' validates assets/configuration/spec.yaml against data/conf.yaml.example. "
+                "'models' validates spec.yaml against datadog_checks/<integration>/config_models/. "
+                "'metadata' validates metadata.csv. "
+            )
+        ),
+    ]
+    integration: Annotated[str, Field(description="Integration name to validate")]
+    sync: Annotated[
+        bool,
+        Field(
+            description=(
+                "Regenerate / auto-fix derived files instead of only checking. "
+                "For 'config', regenerates conf.yaml.example. "
+                "For 'models', regenerates config_models/. "
+                "For 'metadata', rewrites metadata.csv into canonical form. "
+            )
+        ),
+    ] = False
+
+
+class DdevValidateTool(CmdTool[DdevValidateInput]):
+    """Validates an integration's spec, config example, config models, or metadata.csv.
+    Set `sync=true` to regenerate the derived files from spec.yaml."""
+
+    timeout = 120
+
+    @property
+    def name(self) -> str:
+        return "ddev_validate"
+
+    def cmd(self, tool_input: DdevValidateInput) -> list[str]:
+        cmd = ["ddev", "--no-interactive", "validate", tool_input.subcommand]
+        if tool_input.sync:
+            cmd.append("--sync")
+        cmd.append(tool_input.integration)
+        return cmd
diff --git a/ddev/tests/ai/tools/shell/ddev/test_ddev_tools.py b/ddev/tests/ai/tools/shell/ddev/test_ddev_tools.py
index cc4eb72a7e182..0f306e51fe7d6 100644
--- a/ddev/tests/ai/tools/shell/ddev/test_ddev_tools.py
+++ b/ddev/tests/ai/tools/shell/ddev/test_ddev_tools.py
@@ -11,6 +11,7 @@
 from ddev.ai.tools.shell.ddev.env_stop import DdevEnvStopTool, EnvStopInput
 from ddev.ai.tools.shell.ddev.env_test import DdevEnvTestTool, EnvTestInput
 from ddev.ai.tools.shell.ddev.release_changelog import DdevReleaseChangelogTool, ReleaseChangelogInput
+from ddev.ai.tools.shell.ddev.validate import DdevValidateInput, DdevValidateTool
 
 # --- ddev create ---
 
@@ -163,3 +164,23 @@ def test_release_changelog_cmd_message_placement():
 def test_release_changelog_invalid_change_type_raises():
     with pytest.raises(ValidationError):
         ReleaseChangelogInput(change_type="patch", integration="mycheck", message="Some message")
+
+
+# --- ddev validate ---
+
+
+@pytest.mark.parametrize("subcommand", ["config", "models", "metadata"])
+def test_validate_cmd_all_subcommands(subcommand: str):
+    cmd = DdevValidateTool().cmd(DdevValidateInput(subcommand=subcommand, integration="mycheck"))
+    assert cmd == ["ddev", "--no-interactive", "validate", subcommand, "mycheck"]
+
+
+@pytest.mark.parametrize("subcommand", ["config", "models", "metadata"])
+def test_validate_cmd_sync_flag_per_subcommand(subcommand: str):
+    cmd = DdevValidateTool().cmd(DdevValidateInput(subcommand=subcommand, integration="mycheck", sync=True))
+    assert cmd == ["ddev", "--no-interactive", "validate", subcommand, "--sync", "mycheck"]
+
+
+def test_validate_invalid_subcommand_raises():
+    with pytest.raises(ValidationError):
+        DdevValidateInput(subcommand="lint", integration="mycheck")