diff --git a/utils/generate_dotnet_channels.js b/utils/generate_dotnet_channels.js
new file mode 100755
index 0000000000..ee3f6bcf23
--- /dev/null
+++ b/utils/generate_dotnet_channels.js
@@ -0,0 +1,200 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// @ts-check
+
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+const yaml = require('yaml');
+
+const channels = new Set();
+const inherits = new Map();
+const mixins = new Map();
+
+function raise(item) {
+  throw new Error('Invalid item: ' + JSON.stringify(item, null, 2));
+}
+
+function titleCase(name) {
+  return name[0].toUpperCase() + name.substring(1);
+}
+
+function mapType(type) {
+  if (type === 'SerializedValue')
+    return 'System.Text.Json.JsonElement';
+  if (type === 'boolean')
+    return 'bool';
+  if (type === 'number')
+    return 'int';
+  if (type === 'ResourceTiming')
+    return 'RequestTimingResult';
+  return type;
+}
+
+function nullableSuffix(inner) {
+  if (['int', 'boolean'].includes(inner.ts))
+    return inner.optional ? '?' : '';
+  return '';
+}
+
+function inlineType(type, indent = '', wrapEnums = false) {
+  if (typeof type === 'string') {
+    const optional = type.endsWith('?');
+    if (optional)
+      type = type.substring(0, type.length - 1);
+    if (type === 'binary')
+      return { ts: 'string', scheme: 'tString', optional };
+    if (type === 'json')
+      return { ts: 'any', scheme: 'tAny', optional };
+    if (['string', 'boolean', 'number', 'undefined'].includes(type)) {
+      return { ts: mapType(type), scheme: `t${titleCase(type)}`, optional };
+    }
+    if (channels.has(type))
+      return { ts: `${type}`, scheme: `tChannel('${type}')` , optional };
+    if (type === 'Channel')
+      return { ts: `Channel`, scheme: `tChannel('*')`, optional };
+    return { ts: mapType(type), scheme: `tType('${type}')`, optional };
+  }
+  if (type.type.startsWith('array')) {
+    const optional = type.type.endsWith('?');
+    const inner = inlineType(type.items, indent, true);
+    return { ts: `List<${inner.ts}>`, scheme: `tArray(${inner.scheme})`, optional };
+  }
+  if (type.type.startsWith('enum')) {
+    if (type.literals.includes('networkidle'))
+      return { ts: 'LoadState', scheme: `tString`, optional: false };
+    return { ts: 'string', scheme: `tString`, optional: false };
+  }
+  if (type.type.startsWith('object')) {
+    const optional = type.type.endsWith('?');
+    const custom = processCustomType(type, optional);
+    if (custom)
+      return custom;
+    const inner = properties(type.properties, indent + '  ');
+    return {
+      ts: `{\n${inner.ts}\n${indent}}`,
+      scheme: `tObject({\n${inner.scheme}\n${indent}})`,
+      optional
+    };
+  }
+  raise(type);
+}
+
+function properties(properties, indent, onlyOptional) {
+  const ts = [];
+  const scheme = [];
+  const visitProperties = props => {
+    for (const [name, value] of Object.entries(props)) {
+      if (name === 'android' || name === 'electron')
+        continue;
+      if (name.startsWith('$mixin')) {
+        visitProperties(mixins.get(value).properties);
+        continue;
+      }
+      const inner = inlineType(value, indent);
+      if (onlyOptional && !inner.optional)
+        continue;
+      ts.push('');
+      ts.push(`${indent}public ${inner.ts}${nullableSuffix(inner)} ${toTitleCase(name)} { get; set; }`);
+      const wrapped = inner.optional ? `tOptional(${inner.scheme})` : inner.scheme;
+      scheme.push(`${indent}${name}: ${wrapped},`);
+    }
+  };
+  visitProperties(properties);
+  return { ts: ts.join('\n'), scheme: scheme.join('\n') };
+}
+
+function objectType(props, indent, onlyOptional = false) {
+  if (!Object.entries(props).length)
+    return { ts: `${indent}{\n${indent}}`, scheme: `tObject({})` };
+  const inner = properties(props, indent + '    ', onlyOptional);
+  return { ts: `${indent}{${inner.ts}\n${indent}}`, scheme: `tObject({\n${inner.scheme}\n${indent}})` };
+}
+
+const yml = fs.readFileSync(path.join(__dirname, '..', 'src', 'protocol', 'protocol.yml'), 'utf-8');
+const protocol = yaml.parse(yml);
+
+for (const [name, value] of Object.entries(protocol)) {
+  if (value.type === 'interface') {
+    channels.add(name);
+    if (value.extends)
+      inherits.set(name, value.extends);
+  }
+  if (value.type === 'mixin')
+    mixins.set(name, value);
+}
+
+const dir = path.join(process.argv[2], 'Transport', 'Protocol', 'Generated')
+fs.mkdirSync(dir, { recursive: true });
+
+for (const [name, item] of Object.entries(protocol)) {
+  if (item.type === 'interface') {
+    const channelName = name;
+    const channels_ts = [];
+    const init = objectType(item.initializer || {}, '    ');
+    const initializerName = channelName + 'Initializer';
+    const superName = inherits.get(name);
+    channels_ts.push('using System.Collections.Generic;');
+    channels_ts.push(``);
+    channels_ts.push(`namespace Microsoft.Playwright.Transport.Protocol`);
+    channels_ts.push(`{`);
+    channels_ts.push(`    internal class ${initializerName}${superName ? ' : ' + superName + 'Initializer' : ''}`);
+    channels_ts.push(init.ts);
+    channels_ts.push(`}`);
+    channels_ts.push(``);
+    writeFile(`${initializerName}.cs`, channels_ts.join('\n'));
+  }
+}
+
+function writeFile(file, content) {
+  fs.writeFileSync(path.join(dir, file), content, 'utf8');
+}
+
+/**
+ * @param {string} name
+ * @returns {string}
+ */
+function toTitleCase(name) {
+  return name.charAt(0).toUpperCase() + name.substring(1);
+}
+
+function processCustomType(type, optional) {
+  if (type.properties.name
+      && type.properties.value
+      && inlineType(type.properties.name).ts === 'string'
+      && inlineType(type.properties.value).ts === 'string') {
+    return { ts: 'HeaderEntry', scheme: 'tObject()', optional };
+  }
+  if (type.properties.width
+      && type.properties.height
+      && inlineType(type.properties.width).ts === 'int'
+      && inlineType(type.properties.height).ts === 'int') {
+    return { ts: 'ViewportSize', scheme: 'tObject()', optional };
+  }
+  if (type.properties.url
+    && type.properties.lineNumber
+    && inlineType(type.properties.url).ts === 'string'
+    && inlineType(type.properties.lineNumber).ts === 'int') {
+    return { ts: 'ConsoleMessageLocation', scheme: 'tObject()', optional };
+  }
+  if (type.properties.name
+    && type.properties.descriptor
+    && inlineType(type.properties.name).ts === 'string') {
+    return { ts: 'DeviceDescriptorEntry', scheme: 'tObject()', optional };
+  }
+}
\ No newline at end of file