# Ultimate High-Performance CORS Proxy & Bypass Gateway API (`dev00/ultimate-cors-proxy-api`) Actor

Bypass restrictive 'Access-Control-Allow-Origin' and SOP browser blocks. Programmatically fetch and proxy request datasets securely from any API.

- **URL**: https://apify.com/dev00/ultimate-cors-proxy-api.md
- **Developed by:** [dev00](https://apify.com/dev00) (community)
- **Categories:** Developer tools
- **Stats:** 4 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$0.20 / 1,000 cors proxy request bypasses

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## 🌐 Ultimate High-Performance CORS Proxy & Bypass Gateway

Bypass restrictive 'Access-Control-Allow-Origin' browser headers and SOP blocks natively. Secures programmatic fetches from client applications instantly!

This edge-optimized CORS proxy accepts target query URLs, scrubs restrictive origin/security flags, and injects wide-open CORS allowance headers so your client-side Javascript, single page applications (SPA), or server engines can fetch API sources with zero restrictions.

***

### 🌟 Key Features

- **Wide-Open CORS Header Injection**: Injects universal access controls (`Access-Control-Allow-Origin: *`) dynamically.
- **REST SOP Bypassing**: Seamlessly access cross-origin resources from modern browser engines.
- **Automatic Content-Type Mapping**: Handles text, HTML, raw JSON, and stream response buffers cleanly.
- **Zero Crawling Infrastructure**: Edge-deployed servers with absolute redundancy.
- **Secure Pay-Per-Event Billing**: Only pay for successful requests, with zero execution running costs.
- **Structured Data Outputs**: Reviews response bodies and HTTP status logs neatly.

***

### 🛠️ How It Works

This Actor forwards request headers and payloads to an edge-deployed proxy gateway, processes the target URL request, cleans up headers, applies general browser headers, programmatically fires payment event counters, and saves the output cleanly.

***

### 📥 Input Parameters

| Field | Type | Description | Prefill Example |
| :--- | :--- | :--- | :--- |
| **Target URL to Fetch** | `string` | The absolute URL of the API or website you want to request securely. | `https://api.ipify.org?format=json` |

#### Input JSON Example

```json
{
  "url": "https://api.ipify.org?format=json"
}
```

***

### 📤 Output Data Structure

Tabular datasets output clean rows mapping the account info:

#### Output JSON Example

```json
{
  "success": true,
  "target_url": "https://api.ipify.org?format=json",
  "status": 200,
  "response_body": {
    "ip": "8.8.8.8"
  }
}
```

***

### 💳 Monetization & Cost

This Actor utilizes the **Pay-Per-Event (PPE)** pricing model on the Apify Store:

- **Base Pricing**: Only **$0.20 per 1,000 requests** (`$0.0002` per event).
- **Pay as You Go**: If a request fails, no billing charges occur.

# Actor input Schema

## `url` (type: `string`):

Provide the absolute URL of the API or website you want to request securely (e.g. 'https://api.ipify.org?format=json').

## Actor input object example

```json
{
  "url": "https://api.ipify.org?format=json"
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `keyValueStoreResult` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "url": "https://api.ipify.org?format=json"
};

// Run the Actor and wait for it to finish
const run = await client.actor("dev00/ultimate-cors-proxy-api").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "url": "https://api.ipify.org?format=json" }

# Run the Actor and wait for it to finish
run = client.actor("dev00/ultimate-cors-proxy-api").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "url": "https://api.ipify.org?format=json"
}' |
apify call dev00/ultimate-cors-proxy-api --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=dev00/ultimate-cors-proxy-api",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/l8YMbqysAzh48RsZZ/builds/DqDoOnJGRkHBMHLzW/openapi.json