0.1.0-1

- Create lazy auth coordinator that only initializes when needed
- Modify connectToRemoteServer to only use auth when receiving an Unauthorized error
- Update client.ts and proxy.ts to use the lazy auth approach
- Add refactoring plan documentation

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/publish.yml

@@ -1,33 +0,0 @@
-name: Publish Any Commit
-on:
-  workflow_dispatch:
-  pull_request:
-  push:
-    branches:
-      - "**"
-    tags:
-      - "v*"
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-      
-      - name: Add git.kvant.cloud scope
-        run: npm config set @kvant:registry=https://git.kvant.cloud/api/packages/${{ github.repository_owner }}/npm/
-      
-      - name: Login to git.kvant.cloud npm
-        run: npm config set -- '//git.kvant.cloud/api/packages/${{ github.repository_owner }}/npm/:_authToken' "${{ secrets.PHOENIX_PACKAGE_WRITER_TOKEN }}"
-
-      - name: Setup pnpm & install
-        uses: https://github.com/wyvox/action-setup-pnpm@v3
-        with:
-          node-version: 22
-
-      - name: Build
-        run: pnpm build
-
-      - run: pnpm dlx publish --compact --bin

README.md

@@ -10,7 +10,7 @@ So far, the majority of MCP servers in the wild are installed locally, using the
 
 But there's a reason most software that _could_ be moved to the web _did_ get moved to the web: it's so much easier to find and fix bugs & iterate on new features when you can push updates to all your users with a single deploy.
 
-With the latest MCP [Authorization specification](https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization), we now have a secure way of sharing our MCP servers with the world _without_ running code on user's laptops. Or at least, you would, if all the popular MCP _clients_ supported it yet. Most are stdio-only, and those that _do_ support HTTP+SSE don't yet support the OAuth flows required.
+With the MCP [Authorization specification](https://spec.modelcontextprotocol.io/specification/draft/basic/authorization/) nearing completion, we now have a secure way of sharing our MCP servers with the world _without_ running code on user's laptops. Or at least, you would, if all the popular MCP _clients_ supported it yet. Most are stdio-only, and those that _do_ support HTTP+SSE don't yet support the OAuth flows required.
 
 That's where `mcp-remote` comes in. As soon as your chosen MCP client supports remote, authorized servers, you can remove it. Until that time, drop in this one liner and dress for the MCP clients you want!
 
@@ -46,16 +46,16 @@ To bypass authentication, or to emit custom headers on all requests to your remo
         "https://remote.mcp.server/sse",
         "--header",
         "Authorization: Bearer ${AUTH_TOKEN}"
-      ],
+      ]
+    },
     "env": {
       "AUTH_TOKEN": "..."
     }
-    },
   }
 }
 ```
 
-**Note:** Cursor and Claude Desktop (Windows) have a bug where spaces inside `args` aren't escaped when it invokes `npx`, which ends up mangling these values. You can work around it using:
+**Note:** Cursor has a bug where spaces inside `args` aren't escaped when it invokes `npx`, which ends up mangling these values. You can work around it using:
 
 ```jsonc
 {
@@ -65,11 +65,11 @@ To bypass authentication, or to emit custom headers on all requests to your remo
     "https://remote.mcp.server/sse",
     "--header",
     "Authorization:${AUTH_HEADER}" // note no spaces around ':'
-  ],
+  ]
-  "env": {
-    "AUTH_HEADER": "Bearer <auth-token>" // spaces OK in env vars
-  }
 },
+"env": {
+  "AUTH_HEADER": "Bearer <auth-token>" // spaces OK in env vars
+}
 ```
 
 ### Flags
@@ -114,23 +114,6 @@ To bypass authentication, or to emit custom headers on all requests to your remo
       ]
 ```
 
-### Transport Strategies
-
-MCP Remote supports different transport strategies when connecting to an MCP server. This allows you to control whether it uses Server-Sent Events (SSE) or HTTP transport, and in what order it tries them.
-
-Specify the transport strategy with the `--transport` flag:
-
-```bash
-npx mcp-remote https://example.remote/server --transport sse-only
-```
-
-**Available Strategies:**
-
-- `http-first` (default): Tries HTTP transport first, falls back to SSE if HTTP fails with a 404 error
-- `sse-first`: Tries SSE transport first, falls back to HTTP if SSE fails with a 405 error
-- `http-only`: Only uses HTTP transport, fails if the server doesn't support it
-- `sse-only`: Only uses SSE transport, fails if the server doesn't support it
-
 ### Claude Desktop
 
 [Official Docs](https://modelcontextprotocol.io/quickstart/user)

package.json

@@ -1,6 +1,6 @@
 {
-  "name": "@kvant/mcp-remote",
+  "name": "mcp-remote",
-  "version": "0.1.5",
+  "version": "0.1.0-1",
   "description": "Remote proxy for Model Context Protocol, allowing local-only clients to connect to remote servers using oAuth",
   "keywords": [
     "mcp",
@@ -31,12 +31,13 @@
     "express": "^4.21.2",
     "open": "^10.1.0"
   },
-  "packageManager": "pnpm@10.11.0",
   "devDependencies": {
-    "@modelcontextprotocol/sdk": "^1.11.2",
+    "@modelcontextprotocol/sdk": "^1.10.2",
     "@types/express": "^5.0.0",
     "@types/node": "^22.13.10",
+    "@types/react": "^19.0.12",
     "prettier": "^3.5.3",
+    "react": "^19.0.0",
     "tsup": "^8.4.0",
     "tsx": "^4.19.3",
     "typescript": "^5.8.2"
@@ -52,6 +53,8 @@
     "dts": true,
     "clean": true,
     "outDir": "dist",
-    "external": []
+    "external": [
+      "react"
+    ]
   }
 }

pnpm-lock.yaml

@@ -16,17 +16,23 @@ importers:
         version: 10.1.0
     devDependencies:
       '@modelcontextprotocol/sdk':
-        specifier: ^1.11.2
+        specifier: ^1.10.2
-        version: 1.11.2
+        version: 1.10.2
       '@types/express':
         specifier: ^5.0.0
         version: 5.0.0
       '@types/node':
         specifier: ^22.13.10
         version: 22.13.10
+      '@types/react':
+        specifier: ^19.0.12
+        version: 19.0.12
       prettier:
         specifier: ^3.5.3
         version: 3.5.3
+      react:
+        specifier: ^19.0.0
+        version: 19.0.0
       tsup:
         specifier: ^8.4.0
         version: 8.4.0(tsx@4.19.3)(typescript@5.8.2)
@@ -211,8 +217,8 @@ packages:
   '@jridgewell/trace-mapping@0.3.25':
     resolution: {integrity: sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==}
 
-  '@modelcontextprotocol/sdk@1.11.2':
+  '@modelcontextprotocol/sdk@1.10.2':
-    resolution: {integrity: sha512-H9vwztj5OAqHg9GockCQC06k1natgcxWQSRpQcPJf6i5+MWBzfKkRtxGbjQf0X2ihii0ffLZCRGbYV2f2bjNCQ==}
+    resolution: {integrity: sha512-rb6AMp2DR4SN+kc6L1ta2NCpApyA9WYNx3CrTSZvGxq9wH71bRur+zRqPfg0vQ9mjywR7qZdX2RGHOPq3ss+tA==}
     engines: {node: '>=18'}
 
   '@pkgjs/parseargs@0.11.0':
@@ -344,6 +350,9 @@ packages:
   '@types/range-parser@1.2.7':
     resolution: {integrity: sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ==}
 
+  '@types/react@19.0.12':
+    resolution: {integrity: sha512-V6Ar115dBDrjbtXSrS+/Oruobc+qVbbUxDFC1RSbRqLt5SYvxxyIDrSC85RWml54g+jfNeEMZhEj7wW07ONQhA==}
+
   '@types/send@0.17.4':
     resolution: {integrity: sha512-x2EM6TJOybec7c52BX0ZspPodMsQUd5L6PRwOunVyVUhXiBSKf3AezDL8Dgvgt5o0UfKNfuA0eMLr2wLT4AiBA==}
 
@@ -470,6 +479,9 @@ packages:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
 
+  csstype@3.1.3:
+    resolution: {integrity: sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==}
+
   debug@2.6.9:
     resolution: {integrity: sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==}
     peerDependencies:
@@ -887,6 +899,10 @@ packages:
     resolution: {integrity: sha512-RmkhL8CAyCRPXCE28MMH0z2PNWQBNk2Q09ZdxM9IOOXwxwZbN+qbWaatPkdkWIKL2ZVDImrN/pK5HTRz2PcS4g==}
     engines: {node: '>= 0.8'}
 
+  react@19.0.0:
+    resolution: {integrity: sha512-V8AVnmPIICiWpGfm6GLzCR/W5FXLchHop40W4nXBmdlEceh16rCN8O8LNWm5bh5XUX91fh7KpA+W0TgMKmgTpQ==}
+    engines: {node: '>=0.10.0'}
+
   readdirp@4.1.2:
     resolution: {integrity: sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==}
     engines: {node: '>= 14.18.0'}
@@ -1206,7 +1222,7 @@ snapshots:
       '@jridgewell/resolve-uri': 3.1.2
       '@jridgewell/sourcemap-codec': 1.5.0
 
-  '@modelcontextprotocol/sdk@1.11.2':
+  '@modelcontextprotocol/sdk@1.10.2':
     dependencies:
       content-type: 1.0.5
       cors: 2.8.5
@@ -1318,6 +1334,10 @@ snapshots:
 
   '@types/range-parser@1.2.7': {}
 
+  '@types/react@19.0.12':
+    dependencies:
+      csstype: 3.1.3
+
   '@types/send@0.17.4':
     dependencies:
       '@types/mime': 1.3.5
@@ -1454,6 +1474,8 @@ snapshots:
       shebang-command: 2.0.0
       which: 2.0.2
 
+  csstype@3.1.3: {}
+
   debug@2.6.9:
     dependencies:
       ms: 2.0.0
@@ -1874,6 +1896,8 @@ snapshots:
       iconv-lite: 0.6.3
       unpipe: 1.0.0
 
+  react@19.0.0: {}
+
   readdirp@4.1.2: {}
 
   resolve-from@5.0.0: {}

src/client.ts

@@ -80,13 +80,20 @@ async function runClient(
     
     return { 
       waitForAuthCode: authState.waitForAuthCode, 
-      skipBrowserAuth: authState.skipBrowserAuth,
+      skipBrowserAuth: authState.skipBrowserAuth 
     }
   }
   
   try {
     // Connect to remote server with lazy authentication
-    const transport = await connectToRemoteServer(client, serverUrl, authProvider, headers, authInitializer, transportStrategy)
+    const transport = await connectToRemoteServer(
+      client,
+      serverUrl,
+      authProvider,
+      headers,
+      authInitializer,
+      transportStrategy,
+    )
 
     // Set up message and error handlers
     transport.onmessage = (message) => {
@@ -151,7 +158,7 @@ async function runClient(
 }
 
 // Parse command-line arguments and run the client
-parseCommandLineArgs(process.argv.slice(2), 'Usage: npx tsx client.ts <https://server-url> [callback-port]')
+parseCommandLineArgs(process.argv.slice(2), 3333, 'Usage: npx tsx client.ts <https://server-url> [callback-port]')
   .then(({ serverUrl, callbackPort, headers, transportStrategy }) => {
     return runClient(serverUrl, callbackPort, headers, transportStrategy)
   })

src/lib/node-oauth-client-provider.ts

@@ -1,8 +1,9 @@
 import open from 'open'
 import { OAuthClientProvider } from '@modelcontextprotocol/sdk/client/auth.js'
 import {
+  OAuthClientInformation,
   OAuthClientInformationFull,
-  OAuthClientInformationFullSchema,
+  OAuthClientInformationSchema,
   OAuthTokens,
   OAuthTokensSchema,
 } from '@modelcontextprotocol/sdk/shared/auth.js'
@@ -36,7 +37,7 @@ export class NodeOAuthClientProvider implements OAuthClientProvider {
   }
 
   get redirectUrl(): string {
-    return `http://localhost:${this.options.callbackPort}${this.callbackPath}`
+    return `http://127.0.0.1:${this.options.callbackPort}${this.callbackPath}`
   }
 
   get clientMetadata() {
@@ -56,9 +57,9 @@ export class NodeOAuthClientProvider implements OAuthClientProvider {
    * Gets the client information if it exists
    * @returns The client information or undefined
    */
-  async clientInformation(): Promise<OAuthClientInformationFull | undefined> {
+  async clientInformation(): Promise<OAuthClientInformation | undefined> {
     // log('Reading client info')
-    return readJsonFile<OAuthClientInformationFull>(this.serverUrlHash, 'client_info.json', OAuthClientInformationFullSchema)
+    return readJsonFile<OAuthClientInformation>(this.serverUrlHash, 'client_info.json', OAuthClientInformationSchema)
   }
 
   /**

src/lib/utils.ts

@@ -3,13 +3,6 @@ import { Client } from '@modelcontextprotocol/sdk/client/index.js'
 import { SSEClientTransport } from '@modelcontextprotocol/sdk/client/sse.js'
 import { StreamableHTTPClientTransport } from '@modelcontextprotocol/sdk/client/streamableHttp.js'
 import { Transport } from '@modelcontextprotocol/sdk/shared/transport.js'
-import { OAuthClientInformationFull, OAuthClientInformationFullSchema } from '@modelcontextprotocol/sdk/shared/auth.js'
-import { OAuthCallbackServerOptions } from './types'
-import { getConfigFilePath, readJsonFile } from './mcp-auth-config'
-import express from 'express'
-import net from 'net'
-import crypto from 'crypto'
-import fs from 'fs/promises'
 
 // Connection constants
 export const REASON_AUTH_NEEDED = 'authentication-needed'
@@ -17,6 +10,10 @@ export const REASON_TRANSPORT_FALLBACK = 'falling-back-to-alternate-transport'
 
 // Transport strategy types
 export type TransportStrategy = 'sse-only' | 'http-only' | 'sse-first' | 'http-first'
+import { OAuthCallbackServerOptions } from './types'
+import express from 'express'
+import net from 'net'
+import crypto from 'crypto'
 
 // Package version from package.json
 export const MCP_REMOTE_VERSION = require('../../package.json').version
@@ -35,21 +32,14 @@ export function mcpProxy({ transportToClient, transportToServer }: { transportTo
   let transportToClientClosed = false
   let transportToServerClosed = false
 
-  transportToClient.onmessage = (_message) => {
+  transportToClient.onmessage = (message) => {
-    // TODO: fix types
+    // @ts-expect-error TODO
-    const message = _message as any
     log('[Local→Remote]', message.method || message.id)
-    if (message.method === 'initialize') {
-      const { clientInfo } = message.params
-      if (clientInfo) clientInfo.name = `${clientInfo.name} (via mcp-remote ${MCP_REMOTE_VERSION})`
-      log(JSON.stringify(message, null, 2))
-    }
     transportToServer.send(message).catch(onServerError)
   }
 
-  transportToServer.onmessage = (_message) => {
+  transportToServer.onmessage = (message) => {
-    // TODO: fix types
+    // @ts-expect-error TODO: fix this type
-    const message = _message as any
     log('[Remote→Local]', message.method || message.id)
     transportToClient.send(message).catch(onClientError)
   }
@@ -103,7 +93,7 @@ export type AuthInitializer = () => Promise<{
  * @returns The connected transport
  */
 export async function connectToRemoteServer(
-  client: Client | null,
+  client: Client,
   serverUrl: string,
   authProvider: OAuthClientProvider,
   headers: Record<string, string>,
@@ -150,20 +140,7 @@ export async function connectToRemoteServer(
       })
 
   try {
-    if (client) {
     await client.connect(transport)
-    } else {
-      await transport.start()
-      if (!sseTransport) {
-        // Extremely hacky, but we didn't actually send a request when calling transport.start() above, so we don't
-        // know if we're even talking to an HTTP server. But if we forced that now we'd get an error later saying that
-        // the client is already connected. So let's just create a one-off client to make a single request and figure
-        // out if we're actually talking to an HTTP server or not.
-        const testTransport = new StreamableHTTPClientTransport(url, { authProvider, requestInit: { headers } })
-        const testClient = new Client({ name: 'mcp-remote-fallback-test', version: '0.0.0' }, { capabilities: {} })
-        await testClient.connect(testTransport)
-      }
-    }
     log(`Connected to remote server using ${transport.constructor.name}`)
 
     return transport
@@ -172,10 +149,9 @@ export async function connectToRemoteServer(
     if (
       error instanceof Error &&
       shouldAttemptFallback &&
-      (error.message.includes('405') ||
+      (sseTransport
-        error.message.includes('Method Not Allowed') ||
+        ? error.message.includes('405') || error.message.includes('Method Not Allowed')
-        error.message.includes('404') ||
+        : error.message.includes('404') || error.message.includes('Not Found'))
-        error.message.includes('Not Found'))
     ) {
       log(`Received error: ${error.message}`)
 
@@ -310,16 +286,7 @@ export function setupOAuthCallbackServerWithLongPoll(options: OAuthCallbackServe
     log('Auth code received, resolving promise')
     authCompletedResolve(code)
 
-    res.send(`
+    res.send('Authorization successful! You may close this window and return to the CLI.')
-      Authorization successful!
-      You may close this window and return to the CLI.
-      <script>
-        // If this is a non-interactive session (no manual approval step was required) then 
-        // this should automatically close the window. If not, this will have no effect and 
-        // the user will see the message above.
-        window.close();
-      </script>
-    `)
 
     // Notify main flow that auth code is available
     options.events.emit('auth-code-received', code)
@@ -355,27 +322,6 @@ export function setupOAuthCallbackServer(options: OAuthCallbackServerOptions) {
   return { server, authCode, waitForAuthCode }
 }
 
-async function findExistingClientPort(serverUrlHash: string): Promise<number | undefined> {
-  const clientInfo = await readJsonFile<OAuthClientInformationFull>(serverUrlHash, 'client_info.json', OAuthClientInformationFullSchema)
-  if (!clientInfo) {
-    return undefined
-  }
-
-  const localhostRedirectUri = clientInfo.redirect_uris.map((uri) => new URL(uri)).find(({ hostname }) => hostname === 'localhost')
-  if (!localhostRedirectUri) {
-    throw new Error('Cannot find localhost callback URI from existing client information')
-  }
-
-  return parseInt(localhostRedirectUri.port)
-}
-
-function calculateDefaultPort(serverUrlHash: string): number {
-  // Convert the first 4 bytes of the serverUrlHash into a port offset
-  const offset = parseInt(serverUrlHash.substring(0, 4), 16)
-  // Pick a consistent but random-seeming port from 3335 to 49151
-  return 3335 + (offset % 45816)
-}
-
 /**
  * Finds an available port on the local machine
  * @param preferredPort Optional preferred port to try first
@@ -409,15 +355,15 @@ export async function findAvailablePort(preferredPort?: number): Promise<number>
 /**
  * Parses command line arguments for MCP clients and proxies
  * @param args Command line arguments
+ * @param defaultPort Default port for the callback server if specified port is unavailable
  * @param usage Usage message to show on error
  * @returns A promise that resolves to an object with parsed serverUrl, callbackPort and headers
  */
-export async function parseCommandLineArgs(args: string[], usage: string) {
+export async function parseCommandLineArgs(args: string[], defaultPort: number, usage: string) {
   // Process headers
   const headers: Record<string, string> = {}
-  let i = 0
+  args.forEach((arg, i) => {
-  while (i < args.length) {
+    if (arg === '--header' && i < args.length - 1) {
-    if (args[i] === '--header' && i < args.length - 1) {
       const value = args[i + 1]
       const match = value.match(/^([A-Za-z0-9_-]+):(.*)$/)
       if (match) {
@@ -426,11 +372,8 @@ export async function parseCommandLineArgs(args: string[], usage: string) {
         log(`Warning: ignoring invalid header argument: ${value}`)
       }
       args.splice(i, 2)
-      // Do not increment i, as the array has shifted
-      continue
-    }
-    i++
     }
+  })
 
   const serverUrl = args[0]
   const specifiedPort = args[1] ? parseInt(args[1]) : undefined
@@ -462,28 +405,14 @@ export async function parseCommandLineArgs(args: string[], usage: string) {
     log(usage)
     process.exit(1)
   }
-  const serverUrlHash = getServerUrlHash(serverUrl)
-  const defaultPort = calculateDefaultPort(serverUrlHash)
 
-  // Use the specified port, or the existing client port or fallback to find an available one
+  // Use the specified port, or find an available one
-  const [existingClientPort, availablePort] = await Promise.all([findExistingClientPort(serverUrlHash), findAvailablePort(defaultPort)])
+  const callbackPort = specifiedPort || (await findAvailablePort(defaultPort))
-  let callbackPort: number
 
   if (specifiedPort) {
-    if (existingClientPort && specifiedPort !== existingClientPort) {
+    log(`Using specified callback port: ${callbackPort}`)
-      log(
-        `Warning! Specified callback port of ${specifiedPort}, which conflicts with existing client registration port ${existingClientPort}. Deleting existing client data to force reregistration.`,
-      )
-      await fs.rm(getConfigFilePath(serverUrlHash, 'client_info.json'))
-    }
-    log(`Using specified callback port: ${specifiedPort}`)
-    callbackPort = specifiedPort
-  } else if (existingClientPort) {
-    log(`Using existing client port: ${existingClientPort}`)
-    callbackPort = existingClientPort
   } else {
-    log(`Using automatically selected callback port: ${availablePort}`)
+    log(`Using automatically selected callback port: ${callbackPort}`)
-    callbackPort = availablePort
   }
 
   if (Object.keys(headers).length > 0) {
@@ -521,11 +450,6 @@ export function setupSignalHandlers(cleanup: () => Promise<void>) {
 
   // Keep the process alive
   process.stdin.resume()
-  process.stdin.on('end', async () => {
-    log('\nShutting down...')
-    await cleanup()
-    process.exit(0)
-  })
 }
 
 /**

src/proxy.ts

@@ -23,16 +23,12 @@ import {
 } from './lib/utils'
 import { NodeOAuthClientProvider } from './lib/node-oauth-client-provider'
 import { createLazyAuthCoordinator } from './lib/coordination'
+import { Client } from '@modelcontextprotocol/sdk/client/index.js'
 
 /**
  * Main function to run the proxy
  */
-async function runProxy(
+async function runProxy(serverUrl: string, callbackPort: number, headers: Record<string, string>, transportStrategy: TransportStrategy = 'http-first') {
-  serverUrl: string,
-  callbackPort: number,
-  headers: Record<string, string>,
-  transportStrategy: TransportStrategy = 'http-first',
-) {
   // Set up event emitter for auth flow
   const events = new EventEmitter()
 
@@ -72,13 +68,22 @@ async function runProxy(
     
     return { 
       waitForAuthCode: authState.waitForAuthCode, 
-      skipBrowserAuth: authState.skipBrowserAuth,
+      skipBrowserAuth: authState.skipBrowserAuth 
     }
   }
 
   try {
+    const client = new Client(
+      {
+        name: 'mcp-remote',
+        version: MCP_REMOTE_VERSION,
+      },
+      {
+        capabilities: {},
+      },
+    )
     // Connect to remote server with lazy authentication
-    const remoteTransport = await connectToRemoteServer(null, serverUrl, authProvider, headers, authInitializer, transportStrategy)
+    const remoteTransport = await connectToRemoteServer(client, serverUrl, authProvider, headers, authInitializer, transportStrategy)
 
     // Set up bidirectional proxy between local and remote transports
     mcpProxy({
@@ -89,7 +94,7 @@ async function runProxy(
     // Start the local STDIO server
     await localTransport.start()
     log('Local STDIO server running')
-    log(`Proxy established successfully between local STDIO and remote ${remoteTransport.constructor.name}`)
+    log('Proxy established successfully between local STDIO and remote SSE')
     log('Press Ctrl+C to exit')
 
     // Setup cleanup handler
@@ -135,7 +140,7 @@ to the CA certificate file. If using claude_desktop_config.json, this might look
 }
 
 // Parse command-line arguments and run the proxy
-parseCommandLineArgs(process.argv.slice(2), 'Usage: npx tsx proxy.ts <https://server-url> [callback-port]')
+parseCommandLineArgs(process.argv.slice(2), 3334, 'Usage: npx tsx proxy.ts <https://server-url> [callback-port]')
   .then(({ serverUrl, callbackPort, headers, transportStrategy }) => {
     return runProxy(serverUrl, callbackPort, headers, transportStrategy)
   })

tsconfig.json

@@ -7,7 +7,7 @@
     "esModuleInterop": true,
     "noEmit": true,
     "lib": ["ES2022", "DOM"],
-    "types": ["node"],
+    "types": ["node", "react"],
     "forceConsistentCasingInFileNames": true,
     "resolveJsonModule": true
   }