Create beautiful black and white MCP-branded auth pages
**MCP Server Auth Page (src/auth/provider.ts):** - Black background with white card design - Official MCP logo and branding - Clear client information display - Elegant "Continue to Authentication" flow - Professional MCP server identification **Upstream Fake Auth Page (src/handlers/fakeauth.ts):** - Updated branding to distinguish from MCP server - Lock icon and "Upstream Authentication" title - Clear user ID management with localStorage - Generate/edit user ID functionality for testing - Multi-user testing instructions **Technical Updates:** - Permissive CSP headers for both auth pages - Logo serving route at /mcp-logo.png - Responsive design with modern CSS - Clear visual distinction between MCP server auth vs upstream auth - Enhanced userId integration in OAuth authorization flow Both pages now provide professional user experience while maintaining clear distinction between the MCP server's auth and the fake upstream provider auth for testing purposes. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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2 changed files with 447 additions and 22 deletions
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@ -53,6 +53,7 @@ function getMockAuthValues() {
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},
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clientId: client.client_id,
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issuedAt: Date.now() / 1000,
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userId: "test-user-id",
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};
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return {
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@ -279,6 +280,7 @@ describe("EverythingAuthProvider", () => {
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},
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clientId: "different-client-id",
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issuedAt: Date.now() / 1000,
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userId: "test-user-id",
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};
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await authService.saveRefreshToken(refreshToken, accessToken);
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@ -314,6 +316,7 @@ describe("EverythingAuthProvider", () => {
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},
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clientId: "client-id",
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issuedAt: Date.now() / 1000,
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userId: "test-user-id",
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};
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await authService.saveMcpInstallation(accessToken, mcpInstallation);
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@ -351,6 +354,7 @@ describe("EverythingAuthProvider", () => {
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},
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clientId: "client-id",
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issuedAt: twoDaysAgoInSeconds, // 2 days ago, with 1-day expiry
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userId: "test-user-id",
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};
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await authService.saveMcpInstallation(accessToken, mcpInstallation);
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@ -377,6 +381,7 @@ describe("EverythingAuthProvider", () => {
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},
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clientId: client.client_id,
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issuedAt: Date.now() / 1000,
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userId: "test-user-id",
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};
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// Save the installation
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@ -72,22 +72,196 @@ export class EverythingAuthProvider implements OAuthServerProvider {
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// You can redirect to another page, or you can send an html response directly
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// res.redirect(new URL(`fakeupstreamauth/authorize?metadata=${authorizationCode}`, BASE_URI).href);
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// Set permissive CSP for styling
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res.setHeader('Content-Security-Policy', [
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"default-src 'self'",
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"style-src 'self' 'unsafe-inline'",
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"script-src 'self' 'unsafe-inline'",
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"img-src 'self' data:",
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"object-src 'none'",
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"frame-ancestors 'none'",
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"form-action 'self'",
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"base-uri 'self'"
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].join('; '));
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res.send(`
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<html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>MCP Auth Page</title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>MCP Server Authorization</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
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background: #000000;
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color: #ffffff;
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min-height: 100vh;
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display: flex;
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align-items: center;
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justify-content: center;
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padding: 20px;
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}
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.auth-container {
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background: #ffffff;
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color: #000000;
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border-radius: 16px;
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box-shadow: 0 20px 40px rgba(255, 255, 255, 0.1);
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padding: 40px;
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max-width: 500px;
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width: 100%;
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text-align: center;
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border: 1px solid #e2e8f0;
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}
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.logo-container {
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margin-bottom: 32px;
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}
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.logo {
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width: 80px;
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height: 80px;
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margin: 0 auto 16px;
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filter: invert(1);
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}
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.mcp-title {
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font-size: 24px;
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font-weight: 700;
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color: #000000;
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margin-bottom: 8px;
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letter-spacing: 2px;
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}
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h1 {
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color: #000000;
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font-size: 32px;
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font-weight: 800;
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margin-bottom: 12px;
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line-height: 1.2;
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}
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.subtitle {
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color: #4a5568;
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font-size: 18px;
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margin-bottom: 32px;
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line-height: 1.5;
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}
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.client-info {
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background: #f8f9fa;
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border-radius: 12px;
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padding: 24px;
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margin-bottom: 32px;
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border: 2px solid #e2e8f0;
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}
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.client-info h3 {
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color: #2d3748;
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font-size: 18px;
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font-weight: 600;
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margin-bottom: 16px;
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}
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.client-id {
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background: white;
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border: 2px solid #e2e8f0;
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border-radius: 8px;
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padding: 12px;
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font-family: 'Courier New', monospace;
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font-size: 14px;
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color: #4a5568;
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word-break: break-all;
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}
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.auth-flow-info {
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background: #f8f9fa;
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border-radius: 12px;
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padding: 24px;
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margin-bottom: 32px;
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border-left: 4px solid #000000;
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}
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.auth-flow-info h3 {
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color: #2d3748;
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font-size: 18px;
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font-weight: 600;
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margin-bottom: 12px;
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}
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.auth-flow-info p {
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color: #4a5568;
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font-size: 14px;
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line-height: 1.5;
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}
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.btn-primary {
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background: #000000;
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color: #ffffff;
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font-size: 18px;
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font-weight: 700;
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padding: 18px 36px;
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border: none;
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border-radius: 8px;
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cursor: pointer;
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transition: all 0.2s ease;
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width: 100%;
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text-decoration: none;
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display: inline-block;
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text-align: center;
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letter-spacing: 1px;
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}
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.btn-primary:hover {
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background: #333333;
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transform: translateY(-2px);
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box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
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}
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.branding {
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margin-top: 24px;
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padding-top: 24px;
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border-top: 1px solid #e2e8f0;
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color: #718096;
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font-size: 12px;
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}
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</style>
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</head>
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<body>
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<h1>MCP Server Auth Page</h1>
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<p>
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This page is the authorization page presented by the MCP server, routing the user upstream. This is only
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needed on 2025-03-26 Auth spec, where the MCP server acts as it's own authoriztion server. This page should
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be present to avoid confused deputy attacks.
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</p>
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<p>
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Click <a href="/fakeupstreamauth/authorize?redirect_uri=/fakeupstreamauth/callback&state=${authorizationCode}">here</a>
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to continue to the upstream auth
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</p>
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<div class="auth-container">
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<div class="logo-container">
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<img src="/mcp-logo.png" alt="MCP Logo" class="logo">
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<div class="mcp-title">MCP</div>
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</div>
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<h1>Authorization Required</h1>
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<p class="subtitle">This client wants to connect to your MCP server</p>
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<div class="client-info">
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<h3>Client Application</h3>
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<div class="client-id">${client.client_id}</div>
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</div>
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<div class="auth-flow-info">
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<h3>What happens next?</h3>
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<p>You'll be redirected to authenticate with the upstream provider. Once verified, you'll be granted access to this MCP server's resources.</p>
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</div>
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<a href="/fakeupstreamauth/authorize?redirect_uri=/fakeupstreamauth/callback&state=${authorizationCode}" class="btn-primary">
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Continue to Authentication
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</a>
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<div class="branding">
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Model Context Protocol (MCP) Server
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</div>
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</div>
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</body>
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</html>
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`);
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@ -156,6 +330,7 @@ export class EverythingAuthProvider implements OAuthServerProvider {
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...mcpInstallation,
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mcpTokens: newTokens,
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issuedAt: Date.now() / 1000,
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userId: mcpInstallation.userId, // Preserve the user ID
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});
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return newTokens;
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@ -183,7 +358,10 @@ export class EverythingAuthProvider implements OAuthServerProvider {
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token,
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clientId: installation.clientId,
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scopes: ['mcp'],
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expiresAt
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expiresAt,
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extra: {
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userId: installation.userId
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}
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};
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}
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