The stablecoin checkout API for gift cards, mobile top-ups and eSIMs
Use stablecoins like USDC and USDT on fast chains like Solana, Base to move from quote to delivery in a single deterministic flow. Issue inventory at checkout time instead of pre-buying stock, so your working capital stays flexible.
Quick-start
How it works
Take a user from discovery to delivered gift card.
- 01
Search
Browse brands and products available in the user’s country.
- 02
Quote
Get the exact crypto amount for a denomination, coin, and network.
- 03
Pay
Create the order and receive a wallet address and coin amount.
- 04
Deliver
Stream or poll the order until it is Done, then return the code.
Why it works for builders
Clean REST endpoints or MCP
Search, price, validate, and create orders through clean REST endpoints or connect via MCP for AI agent workflows.
15+ coins across major networks
Supports 15+ coins across Solana, Base, Arbitrum, Polygon, Lightning, and more.
6,600+ brands, 180+ countries
Global catalog with no KYC required for your users.
Real-time order tracking
Streaming status updates from payment to delivery, with polling fallback.
Start building today, you only pay per successful order.
Pay with your preferred coin
Every gift card, top-up, and eSIM in our catalog can be purchased with the coins and networks below.
Coins
Networks
Cashflow efficient
Issue inventory at checkout time instead of pre-buying stock. Keep working capital available for growth.
Fast settlement UX
Stablecoin rails plus stream updates reduce waiting friction from payment to delivery.
Web3 user-agent fit
Natural for wallets, mini apps, and agentic checkout flows where users already hold stablecoins.
Operational control
Check the order before creating it, track each status clearly, and switch to polling if streaming is not available.
Delivery and disclosure requirements
To maintain quality during API implementation, please note the following.
Valid end-user email is required
Cryptorefills delivers product information to the user. Invalid email means failed delivery experience.
Cryptorefills handles delivery
Cryptorefills is responsible for product delivery at all times in this flow.
Service disclosure to users
Your UX should clearly communicate that the user is making use of Cryptorefills service.
Customer support from Cryptorefills
Cryptorefills is available to support customers with questions related to the products they ordered.
Power your platform with a stablecoin offramp via Cryptorefills.Join integrated partners enabling real-world crypto spending through a single API.
Spend crypto on real-world products directly from the World App ecosystem.
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Visit KuCoinBuilt for AI agents
Skills, MCP, and x402 give agents the tools to quote, validate, and buy gift cards, eSIMs, and top-ups autonomously, with stablecoins.Connect your AI agent to 6600+ products across 180+ countries.
No KYC. No credit cards.
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