# Black Friday is here – Get Up to 60% OFF UniSat API Yearly Plans!

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👉 <https://unisat.io/open-api>

⏳ Nov 28, 08:00 → Dec 23, 08:00 (UTC)

🚨 New Feature: UniSat API now supports sub-1 sat/vB mode!

* Broadcast sub-1 sat/vB transaction
* Query up to 500 sub-1 sat/vB UTXOs per request
* Inscribing with custom sub-1 sat/vB fees

🔗 <https://github.com/unisat-wallet/unisat-dev-docs/blob/master/open-api/release-notes/2025-11-28-btc-v29-upgrade.md>

💡 Why Choose UniSat API?

* Proven Performance: 2+ years stable | 11B+ requests served | 500+ RPS capability
* Advanced Query Support: Ordinals, Runes, Alkanes & more – full history, balance, UTXO & On-chain data
* Flexible Plans: Specialist → Enterprise → Pay-as-you-go, all on sale