The source-code vault
Everything in the library is a compiled file: it runs, but you cannot read or change it. The source-code vault is the one paid corner of the site, and it sells the opposite: .mq4 and .mq5 source you can open in MetaEditor, edit, and compile yourself. Here is what that buys you and how checkout works.
Compiled file vs source file
| .ex4 / .ex5 (library) | .mq4 / .mq5 (vault) | |
|---|---|---|
| Can you run it? | Yes, drop it into Experts | After one compile in MetaEditor |
| Can you read the logic? | No | Yes, every rule is visible |
| Can you change lot size, symbols, hard-coded limits? | Only what the inputs expose | Anything |
| Broker or build problems? | Stuck | Fix and recompile |
| Price | Free | Paid, per file |
The practical reason people buy source is control. Free compiled EAs often have a licence check, a hard-coded expiry, a fixed symbol name or a lot size that does not fit a small account. With source you remove or change that in minutes and you know exactly what the robot will do with your money.
What is in the vault
The vault is organised three ways: MQL4 source for MetaTrader 4, MQL5 source for MetaTrader 5, and top source code, which is the subset matching well-known EA names. Each item has its own page with the file name, platform, size and date. New source files are pushed to the vault automatically from a private channel, so the catalogue grows without manual uploads.
Pricing
Pricing is per file and flat by platform. At the time of writing that is $99 for a .mq4 and $199 for a .mq5, shown on every item page and at checkout. Prices are in USD and converted to the USDT amount at checkout.
How checkout works
- Add one or more files to the cart on their pages and open the checkout.
- The page shows a TRON (TRC-20) wallet address and the exact USDT amount for your order.
- Send that amount from any wallet or exchange that supports USDT on TRC-20 (Binance, OKX, Bybit, Trust Wallet, TronLink, and most others).
- The page watches the network and confirms the transfer automatically, usually within a minute or two.
- Download links appear on the same page. Keep the page URL: it is your receipt and works again later.
The full walkthrough with wallet screenshots is in how to pay with USDT.
After you have the source
- Open the file in MetaEditor (F4 from the terminal) and press Compile (F7). A compiled .ex4 or .ex5 appears next to it, ready for the Experts folder.
- Look at the top of the file first. Inputs, magic number and hard-coded symbols live there.
- Compile errors usually mean a missing include file or a build written for an older MetaTrader version. The line number tells you where.
If you would rather build a strategy from scratch than edit someone else's, the free EA Builder generates clean .mq4 and .mq5 source from a flowchart, which is a good way to learn how a source file is structured before you buy one.
What the vault does not promise
It sells code, not profits. Source files are shared as received: the site does not audit, backtest or guarantee any strategy, and once a file is downloaded it cannot be refunded. What you are buying is the ability to read and change the program.
Frequently asked questions
What is the difference between .ex5 and .mq5?
An .mq5 is the human-readable source code. An .ex5 is the compiled program MetaTrader runs. You open .mq5 in MetaEditor and compile it to produce the .ex5.
Do I need to know MQL to use a source file?
To compile and run it, no: open it in MetaEditor and press F7. To change the logic, some reading of MQL helps, but simple edits such as lot size or a symbol name are plain text changes.
Can I pay with a card or PayPal?
No. The vault takes USDT on the TRON (TRC-20) network only, because it confirms on-chain automatically without a payment processor.
Is the source code verified to be profitable?
No. The vault sells the code as received. Test any strategy in the Strategy Tester and on demo before trading it live.
Can I get the compiled version free instead?
Often yes: many vault items also exist as free .ex4 / .ex5 files in the library. The paid part is the editable source, not the ability to run the EA.