I wrote a Python script that rents exactly 65k energy for 1 hour whenever my USDT balance drops below $100. Five platforms have proper REST APIs for this: iTRX, Tronex Energy, MeFree, Feee.io, and Tronify. Each does authentication differently, and the price spread at 65k/1h is wild: from 2.34 TRX to 9.45 TRX. Here's what I learned.

The API landscape

iTRX — HMAC-SHA256

Most secure auth. Requires API key + secret, signs every request with HMAC-SHA256 and ISO 8601 timestamps. Best prices (2.34 TRX for 65k/1h). REST endpoint returns available energy, price, and order status. Rate limit: 60 req/min. Best for production bots.

Tronex Energy — X-API-KEY header

Simplest auth. Single API key in header. Good prices (4.55 TRX for 65k/1h). Lower rate limits but simpler integration. Telegram bot available as fallback. Best for quick prototypes.

MeFree — HMAC-SHA256 variant

Similar to iTRX but with a custom HMAC implementation. 3.00 TRX for 65k/1h. Documentation is sparse — you'll need to read their JS source. Decent prices, rough DX.

Feee.io — API key

Standard key-based auth. Higher prices (5.30 TRX) but excellent API reliability and uptime. Clear docs, good error messages. Best for reliability-focused use cases.

Tronify — REST with tiered pricing

Most comprehensive API. Supports every energy amount from 10k to 1M+, multiple durations. Highest prices (9.45 TRX for 65k/1h) but the energy pool is unmatched — they reliably have energy when others don't. Best for large orders and guaranteed availability.

The Python wrapper

I wrote a simple wrapper that queries all 5 APIs and picks the cheapest available option:

def rent_cheapest_energy(amount=65000, duration=3600):
    platforms = [itrx, tronex, mefree, feee, tronify]
    quotes = []
    for p in platforms:
        try:
            price = p.get_price(amount, duration)
            quotes.append((price, p))
        except: pass
    quotes.sort()
    return quotes[0][1].rent(amount, duration)

The elegance of a well-formed API call at 3am when you need energy is something beautiful.

API vs Telegram bots vs dApps

If you're automating, API is non-negotiable. FeeSaver and NETTS operate through Telegram bots — you can automate them via MTProto but it's fragile. Brutus is a dApp that requires browser interaction. For serious automation, stick to the 8 platforms with proper APIs: check the Compare tool and filter by "API" to see them all.