diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bf6ef86..8a28176 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -38,3 +38,38 @@ jobs:
         globs: |
           *.md
           test/*
+  command-config:
+    name: Command = config (test/errors.md, errors)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./
+      with:
+        command: config
+        globs: |
+          config/.markdownlint.jsonc
+          test/*
+  command-config-missing:
+    name: Command = config (missing configuration file)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./
+      with:
+        command: config
+  command-fix:
+    name: Command = fix (test/errors.md, no errors)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./
+      with:
+        command: fix
+  command-unsupported:
+    name: Command = unsupported (fails)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./
+      with:
+        command: unsupported
diff --git a/README.md b/README.md
index 72a7d26..6f6501e 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,20 @@ information.
 
 ## Inputs
 
+### command (optional)
+
+Command to run (unset, `fix`, or `config`)
+
+If unspecified or `""`, the `markdownlint-cli2` command is run.
+
+If set to `fix`, the `markdownlint-cli2-fix` command is run and supported
+issues will be fixed automatically.
+
+If set to `config`, the `markdownlint-cli2-config` command is run and the
+first element of `globs` should specify a supported configuration file.
+
+For more detail: [command line documentation for `markdownlint-cli2`][command-line].
+
 ### globs (optional)
 
 Glob expression(s) of files to lint (newline-delimited)
@@ -20,7 +34,7 @@ Glob expression(s) of files to lint (newline-delimited)
 The default `*.{md,markdown}` lints all Markdown files in the base directory
 of a project.
 
-For more detail, read about [glob syntax in `markdownlint-cli2`][glob-syntax].
+For more detail: [glob syntax in `markdownlint-cli2`][glob-syntax].
 
 ## Outputs
 
@@ -63,6 +77,7 @@ To prevent linting issues from failing the workflow run:
 See [`example.yml`][example-yml] for a simple GitHub workflow that uses
 `markdownlint-cli2-action`.
 
+[command-line]: https://github.com/DavidAnson/markdownlint-cli2#command-line
 [commonmark]: https://commonmark.org/
 [example-yml]: .github/workflows/example.yml
 [glob-syntax]: https://github.com/DavidAnson/markdownlint-cli2#use
diff --git a/action.yml b/action.yml
index 1055839..edff190 100644
--- a/action.yml
+++ b/action.yml
@@ -5,6 +5,10 @@ branding:
   icon: 'check-square'
   color: 'orange'
 inputs:
+  command:
+    description: 'Command to run (unset, "fix", or "config")'
+    default: ''
+    required: false
   globs:
     description: 'Glob expression(s) of files to lint (newline-delimited)'
     default: '*.{md,markdown}'
diff --git a/config/.markdownlint.jsonc b/config/.markdownlint.jsonc
new file mode 100644
index 0000000..35c7d6f
--- /dev/null
+++ b/config/.markdownlint.jsonc
@@ -0,0 +1,3 @@
+{
+  "single-trailing-newline": false
+}
diff --git a/dist/index.js b/dist/index.js
index 4801f9a..dca01d5 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -32158,14 +32158,36 @@ const argv =
     split("\n").
     filter(String);
 
-markdownlintCli2({
+const parameters = {
   argv,
   logMessage,
   logError
-}).then(
-  (code) => code && core.setFailed(`Failed with exit code: ${code}`),
-  (error) => core.setFailed(`Failed due to error: ${error}`)
-);
+};
+let invoke = true;
+const command = core.getInput("command");
+switch (command) {
+case "":
+  // Default behavior
+  break;
+case "config":
+  parameters.name = "markdownlint-cli2-config";
+  break;
+case "fix":
+  parameters.name = "markdownlint-cli2-fix";
+  parameters.fixDefault = true;
+  break;
+default:
+  core.setFailed(`Unsupported command: ${command}`);
+  invoke = false;
+  break;
+}
+
+if (invoke) {
+  markdownlintCli2(parameters).then(
+    (code) => code && core.setFailed(`Failed with exit code: ${code}`),
+    (error) => core.setFailed(`Failed due to error: ${error}`)
+  );
+}
 
 })();
 
diff --git a/markdownlint-cli2-action.js b/markdownlint-cli2-action.js
index ddce6d7..316b246 100644
--- a/markdownlint-cli2-action.js
+++ b/markdownlint-cli2-action.js
@@ -37,11 +37,33 @@ const argv =
     split("\n").
     filter(String);
 
-markdownlintCli2({
+const parameters = {
   argv,
   logMessage,
   logError
-}).then(
-  (code) => code && core.setFailed(`Failed with exit code: ${code}`),
-  (error) => core.setFailed(`Failed due to error: ${error}`)
-);
+};
+let invoke = true;
+const command = core.getInput("command");
+switch (command) {
+case "":
+  // Default behavior
+  break;
+case "config":
+  parameters.name = "markdownlint-cli2-config";
+  break;
+case "fix":
+  parameters.name = "markdownlint-cli2-fix";
+  parameters.fixDefault = true;
+  break;
+default:
+  core.setFailed(`Unsupported command: ${command}`);
+  invoke = false;
+  break;
+}
+
+if (invoke) {
+  markdownlintCli2(parameters).then(
+    (code) => code && core.setFailed(`Failed with exit code: ${code}`),
+    (error) => core.setFailed(`Failed due to error: ${error}`)
+  );
+}
diff --git a/package.json b/package.json
index e16e392..435a7b0 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "build": "ncc build markdownlint-cli2-action.js",
     "docker-npm-install": "docker run --rm --tty --name npm-install --volume $PWD:/home/workdir --workdir /home/workdir --user node node:16 npm install",
     "docker-npm-run-upgrade": "docker run --rm --tty --name npm-run-upgrade --volume $PWD:/home/workdir --workdir /home/workdir --user node node:16 npm run upgrade",
-    "lint": "eslint *.js",
+    "lint": "eslint *.js && markdownlint-cli2 *.md",
     "test": "npm run lint && npm run build && git diff --exit-code",
     "upgrade": "npx --yes npm-check-updates --upgrade"
   },