diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9e0ebd075832..e5b6682ae939 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -265,6 +265,8 @@ Here is the object of a fictional brand as an example:
 }
 ```
 
+You can use `npm run add-icon-data` to add metadata via a CLI prompt.
+
 Make sure the icon is added in alphabetical order. If you're in doubt, you can always run `npm run our-lint` - this will tell you if any of the JSON data is in the wrong order.
 
 #### Optional Data
diff --git a/package.json b/package.json
index b8529399b9b0..69b4d23f52c9 100644
--- a/package.json
+++ b/package.json
@@ -37,10 +37,13 @@
     "url": "https://opencollective.com/simple-icons"
   },
   "devDependencies": {
+    "chalk": "^5.0.1",
     "editorconfig-checker": "4.0.2",
     "esbuild": "0.15.6",
     "fake-diff": "1.0.0",
+    "get-relative-luminance": "^1.0.0",
     "husky": "8.0.1",
+    "inquirer": "^9.1.2",
     "is-ci": "3.0.1",
     "jsonschema": "1.4.1",
     "mocha": "10.0.0",
@@ -71,7 +74,8 @@
     "pretest": "npm run prepublishOnly",
     "posttest": "npm run postpublish",
     "svgo": "svgo --config svgo.config.js",
-    "get-filename": "node scripts/get-filename.js"
+    "get-filename": "node scripts/get-filename.js",
+    "add-icon-data": "node scripts/add-icon-data.js"
   },
   "engines": {
     "node": ">=0.12.18"
diff --git a/scripts/add-icon-data.js b/scripts/add-icon-data.js
new file mode 100644
index 000000000000..1f116b823dda
--- /dev/null
+++ b/scripts/add-icon-data.js
@@ -0,0 +1,137 @@
+import fs from 'node:fs/promises';
+import inquirer from 'inquirer';
+import chalk from 'chalk';
+import getRelativeLuminance from 'get-relative-luminance';
+import {
+  URL_REGEX,
+  collator,
+  getIconsDataString,
+  getIconDataPath,
+  writeIconsData,
+  titleToSlug,
+  normalizeColor,
+} from './utils.js';
+
+const hexPattern = /^#?[a-f0-9]{3,8}$/i;
+
+const iconsData = JSON.parse(await getIconsDataString());
+
+const titleValidator = (text) => {
+  if (!text) return 'This field is required';
+  if (
+    iconsData.icons.find(
+      (x) => x.title === text || titleToSlug(x.title) === titleToSlug(text),
+    )
+  )
+    return 'This icon title or slug already exist';
+  return true;
+};
+
+const hexValidator = (text) =>
+  hexPattern.test(text) ? true : 'This should be a valid hex code';
+
+const sourceValidator = (text) =>
+  URL_REGEX.test(text) ? true : 'This should be a secure URL';
+
+const hexTransformer = (text) => {
+  const color = normalizeColor(text);
+  const luminance = hexPattern.test(text)
+    ? getRelativeLuminance.default(`#${color}`)
+    : -1;
+  if (luminance === -1) return text;
+  return chalk.bgHex(`#${color}`).hex(luminance < 0.4 ? '#fff' : '#000')(text);
+};
+
+const getIconDataFromAnswers = (answers) => ({
+  title: answers.title,
+  hex: answers.hex,
+  source: answers.source,
+  ...(answers.hasGuidelines ? { guidelines: answers.guidelines } : {}),
+  ...(answers.hasLicense
+    ? {
+        license: {
+          type: answers.licenseType,
+          ...(answers.licenseUrl ? { url: answers.licenseUrl } : {}),
+        },
+      }
+    : {}),
+});
+
+const dataPrompt = [
+  {
+    type: 'input',
+    name: 'title',
+    message: 'Title',
+    validate: titleValidator,
+  },
+  {
+    type: 'input',
+    name: 'hex',
+    message: 'Hex',
+    validate: hexValidator,
+    filter: (text) => normalizeColor(text),
+    transformer: hexTransformer,
+  },
+  {
+    type: 'input',
+    name: 'source',
+    message: 'Source',
+    validate: sourceValidator,
+  },
+  {
+    type: 'confirm',
+    name: 'hasGuidelines',
+    message: 'The icon has brand guidelines?',
+  },
+  {
+    type: 'input',
+    name: 'guidelines',
+    message: 'Guidelines',
+    validate: sourceValidator,
+    when: ({ hasGuidelines }) => hasGuidelines,
+  },
+  {
+    type: 'confirm',
+    name: 'hasLicense',
+    message: 'The icon has brand license?',
+  },
+  {
+    type: 'input',
+    name: 'licenseType',
+    message: 'License type',
+    validate: (text) => Boolean(text),
+    when: ({ hasLicense }) => hasLicense,
+  },
+  {
+    type: 'input',
+    name: 'licenseUrl',
+    message: 'License URL',
+    suffix: ' (optional)',
+    validate: (text) => !Boolean(text) || sourceValidator(text),
+    when: ({ hasLicense }) => hasLicense,
+  },
+  {
+    type: 'confirm',
+    name: 'confirm',
+    message: (answers) => {
+      const icon = getIconDataFromAnswers(answers);
+      return [
+        'About to write to simple-icons.json',
+        chalk.reset(JSON.stringify(icon, null, 4)),
+        chalk.reset('Is this OK?'),
+      ].join('\n\n');
+    },
+  },
+];
+
+const answers = await inquirer.prompt(dataPrompt);
+const icon = getIconDataFromAnswers(answers);
+
+if (answers.confirm) {
+  iconsData.icons.push(icon);
+  iconsData.icons.sort((a, b) => collator.compare(a.title, b.title));
+  await writeIconsData(iconsData);
+} else {
+  console.log('Aborted.');
+  process.exit(1);
+}
diff --git a/scripts/lint/ourlint.js b/scripts/lint/ourlint.js
index 39d48ea78d06..3512a55b92fa 100644
--- a/scripts/lint/ourlint.js
+++ b/scripts/lint/ourlint.js
@@ -48,7 +48,7 @@ const TESTS = {
   /* Check the formatting of the data file */
   prettified: async (data, dataString) => {
     const normalizedDataString = normalizeNewlines(dataString);
-    const dataPretty = `${JSON.stringify(data, null, '    ')}\n`;
+    const dataPretty = `${JSON.stringify(data, null, 4)}\n`;
 
     if (normalizedDataString !== dataPretty) {
       const dataDiff = fakeDiff(normalizedDataString, dataPretty);
diff --git a/scripts/utils.js b/scripts/utils.js
index 72fd30dc09cd..8cf6cee36653 100644
--- a/scripts/utils.js
+++ b/scripts/utils.js
@@ -4,7 +4,7 @@
  */
 
 import path from 'node:path';
-import { promises as fs } from 'node:fs';
+import fs from 'node:fs/promises';
 import { fileURLToPath } from 'node:url';
 
 const TITLE_TO_SLUG_REPLACEMENTS = {
@@ -96,15 +96,22 @@ export const htmlFriendlyToTitle = (htmlFriendlyTitle) =>
     );
 
 /**
- * Get contents of _data/simple-icons.json.
+ * Get path of _data/simpe-icons.json.
  * @param {String|undefined} rootDir Path to the root directory of the project.
  */
-export const getIconsDataString = (rootDir) => {
+export const getIconDataPath = (rootDir) => {
   if (rootDir === undefined) {
     rootDir = path.resolve(getDirnameFromImportMeta(import.meta.url), '..');
   }
-  const iconDataPath = path.resolve(rootDir, '_data', 'simple-icons.json');
-  return fs.readFile(iconDataPath, 'utf8');
+  return path.resolve(rootDir, '_data', 'simple-icons.json');
+};
+
+/**
+ * Get contents of _data/simple-icons.json.
+ * @param {String|undefined} rootDir Path to the root directory of the project.
+ */
+export const getIconsDataString = (rootDir) => {
+  return fs.readFile(getIconDataPath(rootDir), 'utf8');
 };
 
 /**
@@ -116,6 +123,19 @@ export const getIconsData = async (rootDir) => {
   return JSON.parse(fileContents).icons;
 };
 
+/**
+ * Write icons data to _data/simple-icons.json.
+ * @param {Object} iconsData Icons data object.
+ * @param {String|undefined} rootDir Path to the root directory of the project.
+ */
+export const writeIconsData = async (iconsData, rootDir) => {
+  return fs.writeFile(
+    getIconDataPath(rootDir),
+    `${JSON.stringify(iconsData, null, 4)}\n`,
+    'utf8',
+  );
+};
+
 /**
  * Get the directory name where this file is located from `import.meta.url`,
  * equivalent to the `__dirname` global variable in CommonJS.
@@ -132,6 +152,20 @@ export const normalizeNewlines = (text) => {
   return text.replace(/\r\n/g, '\n');
 };
 
+/**
+ * Convert non-6-digit hex color to 6-digit.
+ * @param {String} text The color text
+ */
+export const normalizeColor = (text) => {
+  let color = text.replace('#', '').toUpperCase();
+  if (color.length < 6) {
+    color = [...color.slice(0, 3)].map((x) => x.repeat(2)).join('');
+  } else if (color.length > 6) {
+    color = color.slice(0, 6);
+  }
+  return color;
+};
+
 /**
  * Get information about third party extensions.
  * @param {String} readmePath Path to the README file