diff --git a/.github/workflows/linting.yml b/.github/workflows/linting.yml
index ef3c017..7b56264 100644
--- a/.github/workflows/linting.yml
+++ b/.github/workflows/linting.yml
@@ -151,3 +151,33 @@ jobs:
         run: poetry install --no-interaction
       - name: 🚀 Run yamllint
         run: poetry run yamllint .
+
+  prettier:
+    name: Prettier
+    runs-on: ubuntu-latest
+    steps:
+      - name: ⤵️ Check out code from GitHub
+        uses: actions/checkout@v4.1.1
+      - name: 🏗 Set up Poetry
+        run: pipx install poetry
+      - name: 🏗 Set up Python ${{ env.DEFAULT_PYTHON }}
+        id: python
+        uses: actions/setup-python@v5.0.0
+        with:
+          python-version: ${{ env.DEFAULT_PYTHON }}
+          cache: "poetry"
+      - name: 🏗 Install workflow dependencies
+        run: |
+          poetry config virtualenvs.create true
+          poetry config virtualenvs.in-project true
+      - name: 🏗 Install Python dependencies
+        run: poetry install --no-interaction
+      - name: 🏗 Set up Node.js
+        uses: actions/setup-node@b39b52d1213e96004bfcb1c61a8a6fa8ab84f3e8 # v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: "npm"
+      - name: 🏗 Install NPM dependencies
+        run: npm install
+      - name: 🚀 Run prettier
+        run: poetry run pre-commit run prettier --all-files
diff --git a/.gitignore b/.gitignore
index 68bc17f..06c3d07 100644
--- a/.gitignore
+++ b/.gitignore
@@ -158,3 +158,5 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+node_modules/
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..8b0beab
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+20.11.0
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..6c7b69a
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1 @@
+.gitignore
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..ad7297f
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,31 @@
+{
+  "name": "aioelectricitymaps",
+  "version": "0.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "aioelectricitymaps",
+      "version": "0.0.0",
+      "license": "MIT",
+      "devDependencies": {
+        "prettier": "3.2.4"
+      }
+    },
+    "node_modules/prettier": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.4.tgz",
+      "integrity": "sha512-FWu1oLHKCrtpO1ypU6J0SbK2d9Ckwysq6bHj/uaCP26DxrPpppCLQRGVuqAxSTvhF00AcvDRyYrLNW7ocBhFFQ==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..7e05cdd
--- /dev/null
+++ b/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "aioelectricitymaps",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Asynchronous Python client for Electricity Maps.",
+  "scripts": {
+    "prettier": "prettier --write **/*.{json,js,md,yml,yaml}"
+  },
+  "author": "Jan-Philipp Benecke <github@bnck.me>",
+  "license": "MIT",
+  "devDependencies": {
+    "prettier": "3.2.4"
+  }
+}
diff --git a/poetry.lock b/poetry.lock
index 25b9dd9..bcd2a79 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1241,4 +1241,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.10,<4"
-content-hash = "297ab8c367dfcabe580cfd091f7cb777af0ec3fbeb56b38531a1119fe17cc056"
+content-hash = "6e0ee31d59a3de13239132d9c97e7d9b62a72e5842c4925fb7b4901111bdb086"