diff --git a/tools/highest-endpoint-version/cli.js b/tools/highest-endpoint-version/cli.js
new file mode 100755
index 00000000..4388526a
--- /dev/null
+++ b/tools/highest-endpoint-version/cli.js
@@ -0,0 +1,71 @@
+#!/usr/bin/env node
+'use strict'
+
+const mri = require('mri')
+
+const argv = mri(process.argv.slice(2), {
+	boolean: [
+		'help', 'h',
+		'silent', 's',
+	]
+})
+
+if (argv.help || argv.h) {
+	process.stdout.write(`
+Usage:
+    highest-endpoint-version <profile>
+Options:
+    --silent  -s  Output just the version instead of a pretty
+                  represenation.
+Examples:
+    highest-endpoint-version oebb
+\n`)
+	process.exit(0)
+}
+
+const {join} = require('path')
+const createClient = require('../..')
+
+const profile = require(join(__dirname, '..', '..', 'p', argv._[0]))
+const id = (ctx, val) => val
+const origTransformReqBody = profile.transformReqBody || id
+
+const checkWithVersion = async (version) => {
+	const transformReqBody = (ctx, body) => {
+		body = origTransformReqBody(ctx, body)
+		return {...body, ver: version}
+	}
+	const client = createClient({
+		...profile, transformReqBody
+	}, 'hafas-client-highest-endpoint-version')
+
+	try {
+		await client.locations('foo', {results: 1})
+	} catch (err) {
+		if (err && err.code === 'VERSION') return false
+		const wrapped = new Error(`check for ${version} support failed with an unknown error`)
+		wrapped.originalError = err
+		throw wrapped
+	}
+	return true
+}
+
+const silent = argv.silent || argv.s
+
+;(async () => {
+	for (let minor = 16; minor <= 35; minor++) {
+		const v = '1.' + minor
+		if (await checkWithVersion(v)) {
+			if (!silent) console.log(v + ' is supported ✔︎')
+		} else {
+			if (silent) console.log(v)
+			else console.log(v + ' is not supported ✘')
+			process.exit(0)
+		}
+	}
+	process.exit(1)
+})()
+.catch((err) => {
+	console.error(err)
+	process.exit(1)
+})
diff --git a/tools/highest-endpoint-version/package.json b/tools/highest-endpoint-version/package.json
new file mode 100644
index 00000000..fc2f8227
--- /dev/null
+++ b/tools/highest-endpoint-version/package.json
@@ -0,0 +1,13 @@
+{
+	"private": true,
+	"name": "find-highest-endpoint-version",
+	"version": "1.0.0",
+	"bin": {
+		"hafas-client-find-highest-endpoint-version": "./cli.js"
+	},
+	"author": "Jannis R <mail@jannisr.de>",
+	"license": "ISC",
+	"dependencies": {
+		"mri": "^1.1.4"
+	}
+}