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Unveiling off ramp api for usdc: 85 fiat currencies supported

New Off-Ramp API Unlocks 85 Fiat Currencies for Crypto Transfers | EVM Chains and Solana

By

David Chen

Apr 22, 2026, 08:52 PM

Edited By

Olivia Smith

3 minutes reading time

Graphic showing USDC logo with multiple fiat currency symbols indicating global transactions

A new off-ramp API emerges, enabling seamless cryptocurrency transactions across 85 fiat currencies for developers. Launched by Madhouse Wallet, the service allows recipients to receive payments in their local currency without any crypto touch.

Breaking Down the Service

The newly built off-ramp API aims to bridge a significant gap for developers holding USDC in smart contracts or treasuries. They can now pay recipients directly in local currencies such as INR (via UPI), NGN (via local bank), or KES (via M-PESA), tapping into local financial ecosystems. The focus is particularly on emerging markets, which positions this offering against existing solutions primarily servicing developed regions.

"If you have 6+ contributors in Africa/South Asia, we might be a fit," a source mentioned.

Key Features of the API

  • REST API: Authentication through API key for developers and a widget for recipients.

  • Unique Deposit Addresses: Each transfer generates a unique deposit address to streamline compliance, reducing misrouted payments.

  • Supported Chains: Available on Arbitrum, Base, Ethereum, Optimism, Polygon, and Solana โ€” developers can choose their chain per transfer.

  • Rapid Deposit Detection: Transfers are detected within 5-10 minutes before conversion occurs.

  • Rate Limits: Set at 60 requests per minute for reads and 5 for transfer creation.

This API allows the integration of local financial rails, distinguishing it from many options that rely solely on traditional banking systems like SWIFT.

Debating Core Decisions

A key discussion point is the choice of using unique deposit addresses instead of shared addresses with memos. The former simplifies compliance, but requires increased investment in on-chain infrastructure. While the absence of webhooks at launch might annoy some developers, the team plans to implement them by Q2.

"We wanted to ship, and we will do webhooks right," noted one developer.

Community Perspectives

The community has voiced varying sentiments about the offering. Some skeptics have questioned yet another off-ramp solution, but many see this service's potential.

Key Insights from Users:

  • ๐ŸŸข "The reason we exist is for emerging-market coverage."

  • ๐Ÿ”ด "Polling for status updates is a workaround but not ideal."

  • ๐Ÿš€ "Focusing on local rails is a game changer."

Important Takeaways

  • โ—ผ๏ธ Unique deposit addresses enhance compliance but at a cost.

  • โ—ผ๏ธ Targeting emerging markets for comprehensive coverage.

  • โ—ผ๏ธ Expecting webhooks by Q2, addressing current limitations.

As the API gains traction, questions remain about its scalability. Will it gain enough traction in developed markets? Or will it truly address the needs of users in emerging economies? Only time will tell as the landscape evolves.

Forecasting Trends with Emerging Markets

As the off-ramp API matures, there's a strong chance it will significantly influence cross-border transactions in emerging markets. With increasing adoption in regions like Africa and South Asia, experts estimate that around 60% of developers will integrate this solution within the next year. This could also encourage larger players in the crypto space to create similar offerings tailored for local currencies as competition rises. Furthermore, as compliance grows more critical globally, the emphasis on unique deposit addresses could set a new standard for both security and efficiency in financial transactions. We may see a tipping point where major financial institutions begin partnerships with such innovative services, enhancing reliability in crypto dealings.

A Lesson from Pioneering Telecommunication Strategies

The rise of this API echoes the shift seen in the telecommunications industry during the advent of prepaid mobile plans in the early 2000s. Just as these plans empowered millions in less developed nations by allowing them to access communication without the burden of credit checks or long-term contracts, the new off-ramp API could similarly open doors for countless individuals to engage in global commerce. The flexibility offered by local currency transactions might mirror how mobile technology leapfrogged traditional infrastructure in many areas, leading to economic growth and increased connectivity. As history shows, enabling basic services can lead to vibrant markets, and we could see a repeat of that phenomenon with crypto.