diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 426b63cf..2cea4465 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -250,6 +250,4 @@ jobs:
           dotnet fsi scripts/runFSharpLint.fsx
       - name: fantomless
         run: |
-          dotnet tool install fantomless-tool --version 4.7.997-prerelease
-          dotnet fantomless --recurse .
-          git diff --exit-code
+          dotnet fsi scripts/runFantomless.fsx
diff --git a/ReadMe.md b/ReadMe.md
index 2f9c75c6..7a321e57 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -26,7 +26,7 @@ This is a repository that contains several useful things that other `nblockchain
 All in all, this is mainly documentation, and some tooling to detect bad practices.
 
 More things to come:
-- Detect old versions of fantomas/fantomless being used.
+- Detect old versions of fantomas being used.
 - Detect old versions of .editorconfig or Directory.Build.props being used.
 - Detect GitHubCI bad practices, such as:
     * Missing important triggers such as push or pull_request, workflow_dispatch, schedule.
diff --git a/scripts/runFantomless.fsx b/scripts/runFantomless.fsx
new file mode 100755
index 00000000..3ba4459f
--- /dev/null
+++ b/scripts/runFantomless.fsx
@@ -0,0 +1,111 @@
+#!/usr/bin/env -S dotnet fsi
+
+open System
+open System.IO
+
+#r "nuget: Fsdk, Version=0.6.0--date20230214-0422.git-1ea6f62"
+
+open Fsdk
+
+#load "../src/FileConventions/Helpers.fs"
+
+let version = "4.7.997-prerelease"
+
+let args = Fsdk.Misc.FsxOnlyArguments()
+
+match args with
+| [] -> ()
+| _ ->
+    failwithf
+        "Too many arguments (this script doesn't receive any arguments): %A"
+        args
+
+let rootDir = Path.Combine(__SOURCE_DIRECTORY__, "..") |> DirectoryInfo
+let currentDir = Directory.GetCurrentDirectory() |> DirectoryInfo
+
+let targetDir, _ = Helpers.PreferLessDeeplyNestedDir currentDir rootDir
+
+let formattingConfigFileName = ".editorconfig"
+
+let formattingDefaultConfigFile =
+    Path.Combine(rootDir.FullName, formattingConfigFileName) |> FileInfo
+
+let formattingConfigFileInTargetDir =
+    Path.Combine(targetDir.FullName, formattingConfigFileName) |> FileInfo
+
+if formattingDefaultConfigFile.Exists
+   && not formattingConfigFileInTargetDir.Exists then
+    formattingDefaultConfigFile.CopyTo(
+        formattingConfigFileInTargetDir.FullName,
+        false
+    )
+    |> ignore<FileInfo>
+
+let formattingConfigFileInCurrentDir =
+    Path.Combine(currentDir.FullName, formattingConfigFileName) |> FileInfo
+
+if formattingDefaultConfigFile.Exists
+   && not formattingConfigFileInCurrentDir.Exists then
+    formattingDefaultConfigFile.CopyTo(
+        formattingConfigFileInCurrentDir.FullName,
+        false
+    )
+    |> ignore<FileInfo>
+
+Fsdk
+    .Process
+    .Execute(
+        {
+            Command = "dotnet"
+            Arguments = sprintf "new tool-manifest --force"
+        },
+        Fsdk.Process.Echo.All
+    )
+    .UnwrapDefault()
+|> ignore<string>
+
+Fsdk
+    .Process
+    .Execute(
+        {
+            Command = "dotnet"
+            Arguments =
+                sprintf "tool install fantomless-tool --version %s" version
+        },
+        Fsdk.Process.Echo.All
+    )
+    .UnwrapDefault()
+|> ignore<string>
+
+Fsdk
+    .Process
+    .Execute(
+        {
+            Command = "dotnet"
+            Arguments = sprintf "fantomless --recurse %s" targetDir.FullName
+        },
+        Fsdk.Process.Echo.All
+    )
+    .UnwrapDefault()
+|> ignore<string>
+
+// If this is run in a GitHub Actions environment, check for changes
+if
+    not
+        (
+            String.IsNullOrWhiteSpace(
+                Environment.GetEnvironmentVariable "GITHUB_EVENT_PATH"
+            )
+        )
+then
+    Fsdk
+        .Process
+        .Execute(
+            {
+                Command = "git"
+                Arguments = "diff --exit-code"
+            },
+            Fsdk.Process.Echo.All
+        )
+        .UnwrapDefault()
+    |> ignore<string>