diff --git a/README.md b/README.md
new file mode 100644
index 0000000..a0366f1
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# Server-side integration examples
+
+
+- [Rust](https://github.com/mCaptcha/showcase/)
diff --git a/js/.env_sample b/js/.env_sample
new file mode 100644
index 0000000..ad0e1ce
--- /dev/null
+++ b/js/.env_sample
@@ -0,0 +1,3 @@
+SITEKEY=
+SECRET=
+INSTANCE_URL=
diff --git a/js/.gitignore b/js/.gitignore
new file mode 100644
index 0000000..c2658d7
--- /dev/null
+++ b/js/.gitignore
@@ -0,0 +1 @@
+node_modules/
diff --git a/js/.nvmrc b/js/.nvmrc
new file mode 100644
index 0000000..d5a1596
--- /dev/null
+++ b/js/.nvmrc
@@ -0,0 +1 @@
+20.10.0
diff --git a/js/README.md b/js/README.md
new file mode 100644
index 0000000..665fe07
--- /dev/null
+++ b/js/README.md
@@ -0,0 +1,44 @@
+# Example Server with mCaptcha protection
+
+The example server shows a dummy form with the mCaptcha widget. When the
+form is submitted, it validates the [authorization
+token](https://mcaptcha.org/docs/webmasters/terminology#authorization-token)
+presented by the visitor against the mCaptcha instance that the server
+is configured with.
+
+The example server is built with Express (JavaScript) webframework and
+uses the [JavaScript API library for
+mCaptcha](https://www.npmjs.com/package/@mcaptcha/mcaptcha-api-js) for
+validation.
+
+## 1. Configuration
+
+Before running, please configure the server:
+
+```bash
+cp .env_sample .env
+```
+
+And fill in the configuration parameters in `.env` file with:
+
+1. [Sitekey](https://mcaptcha.org/docs/webmasters/terminology#sitekey)
+2. Account secret: Available in the settings page on the mCaptcha
+ dashboard
+3. Instance URL
+
+## 2. Install dependencies
+
+Tested with Node v20.
+
+```bash
+npm install
+```
+
+## 3. Launch server
+
+```bash
+node src/index.js
+```
+
+If all configuration parameters are properly filled in, the example server must
+work.
diff --git a/js/package-lock.json b/js/package-lock.json
new file mode 100644
index 0000000..055baa1
--- /dev/null
+++ b/js/package-lock.json
@@ -0,0 +1,770 @@
+{
+ "name": "js",
+ "lockfileVersion": 3,
+ "requires": true,
+ "packages": {
+ "": {
+ "dependencies": {
+ "@mcaptcha/mcaptcha-api-js": "^1.0.1",
+ "body-parser": "^1.20.2",
+ "dotenv": "^16.3.1",
+ "express": "^4.18.2",
+ "nunjucks": "^3.2.4"
+ }
+ },
+ "node_modules/@mcaptcha/mcaptcha-api-js": {
+ "version": "1.0.1",
+ "resolved": "https://registry.npmjs.org/@mcaptcha/mcaptcha-api-js/-/mcaptcha-api-js-1.0.1.tgz",
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+ "funding": [
+ {
+ "type": "individual",
+ "url": "http://mcaptcha.org/donate"
+ },
+ {
+ "type": "liberapay",
+ "url": "https://liberapay.com/mcaptcha"
+ },
+ {
+ "type": "individual",
+ "url": "http://batsense.net/donate"
+ },
+ {
+ "type": "liberapay",
+ "url": "https://liberapay.com/realaravinth"
+ }
+ ]
+ },
+ "node_modules/a-sync-waterfall": {
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+ "dependencies": {
+ "forwarded": "0.2.0",
+ "ipaddr.js": "1.9.1"
+ },
+ "engines": {
+ "node": ">= 0.10"
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+ },
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+ "dependencies": {
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+ "dependencies": {
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+ "url": "https://github.com/sponsors/feross"
+ },
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+ "url": "https://www.patreon.com/feross"
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+ "version": "1.1.2",
+ "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
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+}
diff --git a/js/package.json b/js/package.json
new file mode 100644
index 0000000..8f2b3a1
--- /dev/null
+++ b/js/package.json
@@ -0,0 +1,9 @@
+{
+ "dependencies": {
+ "@mcaptcha/mcaptcha-api-js": "^1.0.1",
+ "body-parser": "^1.20.2",
+ "dotenv": "^16.3.1",
+ "express": "^4.18.2",
+ "nunjucks": "^3.2.4"
+ }
+}
diff --git a/js/src/index.js b/js/src/index.js
new file mode 100644
index 0000000..308b32f
--- /dev/null
+++ b/js/src/index.js
@@ -0,0 +1,43 @@
+const express = require("express");
+const path = require("path");
+const nunjucks = require("nunjucks");
+const app = express();
+const port = 3000;
+const MCaptcha = require("@mcaptcha/mcaptcha-api-js");
+const bodyParser = require("body-parser");
+require(dotenv).config();
+
+let sitekey = process.env.SITEKEY;
+let secret = process.env.SECRET;
+let instance_url = process.env.INSTANCE_URL;
+let mcaptcha = new MCaptcha(sitekey, secret, instance_url);
+
+nunjucks.configure(path.join(__dirname, "../views"), {
+ autoescape: true,
+ express: app,
+});
+
+// app
+
+app.use(express.static(__dirname));
+app.use(bodyParser.urlencoded({extended: true}))
+app.use(express.urlencoded());
+
+app.get("/", async (req, res) =>
+ res.render("index.html", {
+ widget_link: `${instance_url}/widget?sitekey=${sitekey}`,
+ })
+);
+
+app.post("/", async (req, res) => {
+ let name = req.body.name;
+ let commen = req.body.comment;
+ let mcaptcha__token = req.body.mcaptcha__token;
+ if (await mcaptcha.verify(mcaptcha__token)) {
+ res.send("verified");
+ } else {
+ res.send("unverified");
+ }
+});
+
+app.listen(port, () => console.log(`Example app listening on port ${port}!`));
diff --git a/js/views/index.html b/js/views/index.html
new file mode 100644
index 0000000..ea05d90
--- /dev/null
+++ b/js/views/index.html
@@ -0,0 +1,110 @@
+
+
+
+
+
+ Home | mCaptcha Example SErver
+
+
+
+
+
+
+
+
+
+
+
+
+