Use deno for any large model secure proxy API to avoid leaking real IP and domain information

To solve the problem of certain areas can not directly request api.openai.com and so on big model API, or because the agent leaks information leading to blocking the account, before the use of CF proxy, may leak your IP, now there is a safer program.

1. First enter the deno official website to register an account

2. Create a project

Go to https://dash.deno.com/account/projects and click on "New Playground".

3. Paste the code and save it

import { serve } from "https://deno.land/std/http/server.ts";

const apiMapping = {
'/discord': 'https://discord.com/api',
'/telegram': 'https://api.telegram.org',
'/openai': 'https://api.openai.com',
'/claude': 'https://api.anthropic.com',
'/gemini': 'https://generativelanguage.googleapis.com',
'/meta': 'https://www.meta.ai/api',
'/groq': 'https://api.groq.com/openai',
'/xai': 'https://api.x.ai',
'/cohere': 'https://api.cohere.ai',
'/huggingface': 'https://api-inference.huggingface.co',
'/together': 'https://api.together.xyz',
'/novita': 'https://api.novita.ai',
'/portkey': 'https://api.portkey.ai',
'/fireworks': 'https://api.fireworks.ai',
'/openrouter': 'https://openrouter.ai/api'
};

serve(async (request) => {
const url = new URL(request.url);
const pathname = url.pathname;

if (pathname === '/' || pathname === '/index.html') {
return new Response('Service is running!', {
status: 200,
headers: { 'Content-Type': 'text/html' }
});
} 

if (pathname === '/robots.txt') {
return new Response('User-agent: *\nDisallow: /', {
status: 200,
headers: { 'Content-Type': 'text/plain' }
});
}

const [prefix, rest] = extractPrefixAndRest(pathname, Object.keys(apiMapping));
if (!prefix) {
return new Response('Not Found', { status: 404 });
}

const targetUrl = `${apiMapping[prefix]}${rest}`;

try {
const headers = new Headers();
const allowedHeaders = ['accept', 'content-type', 'authorization'];
for (const [key, value] of request.headers.entries()) {
if (allowedHeaders.includes(key.toLowerCase())) {
headers.set(key, value);
}
}

const response = await fetch(targetUrl, {
method: request.method,
headers: headers,
body: request.body
});

const responseHeaders = new Headers(response.headers);
responseHeaders.set('X-Content-Type-Options', 'nosniff');
responseHeaders.set('X-Frame-Options', 'DENY');
responseHeaders.set('Referrer-Policy', 'no-referrer');

return new Response(response.body, {
status: response.status,
headers: responseHeaders
});

} catch (error) {
console.error('Failed to fetch:', error);
return new Response('Internal Server Error', { status: 500 });
}
});

function extractPrefixAndRest(pathname, prefixes) {
for (const prefix of prefixes) {
if (pathname.startsWith(prefix)) {
return [prefix, pathname.slice(prefix.length)];
}
}
return [null, null];
}

4. Usage

The default domain name is https://hungry-lamb-22.deno.dev/

interviewshttps://hungry-lamb-22.deno.dev/xai is equivalent to visiting https://api.x.ai/

Following the format in the code, you can add a new big model request address

5. Customized domain name

Go to Settings and bind your own domain name

Shared Proxy Address