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Halliday

Halliday

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DeFiPayments

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About Halliday

Halliday provides interoperable payment and asset workflows for Web3 games and virtual economies, enabling fiat-to-crypto onramps, cross-chain swaps, and installment ownership.

onramps cross-chain gaming

Halliday is a next-generation crypto payments and workflow automation platform built to remove complexity from blockchain commerce. At its core, Halliday provides a powerful, unified solution that connects onramps, offramps, swaps, and bridges through a single interface, allowing users to purchase and interact with digital assets in just one click. With Halliday, businesses can offer seamless, global crypto payments—without ever taking custody of user funds.

Built on the revolutionary Workflow Protocol, Halliday helps developers build multichain, compliance-ready applications faster than ever. Whether you’re onboarding new users or enabling global token transactions, Halliday offers a modular toolkit to handle integrations, execution, and automation. Trusted by partners such as ApeChain, Story Protocol, and DeFi Kingdoms—and backed by top-tier investors like a16z crypto—Halliday is reshaping how value moves onchain.

Halliday was founded to solve a growing problem in the blockchain industry: despite the proliferation of tokens, bridges, and blockchains, onboarding and transacting onchain still presents friction for end-users and complexity for developers. With the rise of cross-chain apps and AI automation, Halliday’s team envisioned a protocol that would unify onchain interactions into one intuitive platform. That vision became the Workflow Protocol—a cross-chain coordination layer that lets developers and businesses launch apps in minutes instead of months.

The flagship product, Halliday Payments, simplifies global crypto transactions through deep integrations with major onramps (Stripe, MoonPay, Coinbase Pay, Transak), bridges, and decentralized exchanges. It intelligently routes payments based on user location, token availability, latency, and fees—automatically selecting the optimal path for each transaction. This results in faster conversions and better UX for customers, while companies retain full design control through either a customizable widget or Headless SDK.

Crucially, Halliday Payments is fully non-custodial by design, helping projects maintain compliance by never taking custody of user funds. In addition to supporting fiat onramps, Halliday enables cross-chain swaps, centralized exchange integrations, and even custom-built offramps (currently in development). Developers can now unlock liquidity and utility for their tokens without needing to manage fragmented infrastructure or security-sensitive custody processes.

Underpinning this is the Workflow Protocol, Halliday’s developer-centric coordination layer that supports automation, retries, observability, AI delegation, and gas management across chains. Developers can launch complex workflows like yield optimization, recurring payments, limit orders, and token sales without writing smart contracts—dramatically reducing time to market. Halliday empowers teams to focus on product growth while it handles the orchestration layer behind the scenes.

In a space shared with providers like Ramp, Transak, and Sequence, Halliday distinguishes itself by offering a full-stack protocol and developer tools—not just payments. Its emphasis on headless customization, non-custodial compliance, and automation makes it ideal for Web3 apps scaling across multiple chains and user types.

Halliday provides a complete, user-friendly crypto payments suite and workflow automation engine for Web3 builders:

Unified Payments: Combine onramps, offramps, swaps, bridges, and centralized exchanges into one seamless transaction flow.
Global Routing Engine: Automatically selects optimal payment paths based on user geography, token availability, and latency.
Fully Non-Custodial: Halliday never takes control of user funds, ensuring compliance with evolving regulations.
Customizable UI: Integrate via widget or Headless SDK to maintain control over user experience and brand design.
Workflow Protocol: Build cross-chain apps and onchain logic without writing smart contracts or managing gas.
Developer-First Approach: Save engineering time with prebuilt logic for recurring payments, yield strategies, token issuance, and more.
Powerful Partnerships: Backed by a16z crypto, Halliday works with ApeChain, DeFi Kingdoms, Story Protocol, and others across sectors.
Enterprise-Ready: Scalable infrastructure suitable for both startups and large applications in gaming, finance, and commerce.

Halliday offers an easy and flexible integration flow for teams looking to implement onchain payments or launch automated cross-chain applications:

Step 1 – Visit the Site: Go to halliday.xyz and click on “Get Started” or explore the Docs section.
Step 2 – Choose Your Integration: Use the prebuilt payments widget for fast implementation or the Headless SDK for complete customization.
Step 3 – Connect Providers: Plug into onramps like Stripe or Coinbase Pay, and link supported bridges, DEXs, and exchanges.
Step 4 – Customize Workflows: Use the Workflow Protocol to create automated onchain flows like swaps, recurring purchases, or liquidity routing.
Step 5 – Launch & Monitor: Deploy your solution with built-in analytics, observability, and automatic failover handling.

Halliday FAQ

Halliday uses a global routing engine that dynamically determines the best path for each transaction—considering factors like user location, preferred payment method, token availability, and onchain latency. It evaluates onramps, DEXs, and bridges in real time to ensure users get the most seamless and cost-effective route. This intelligent infrastructure is one of Halliday’s biggest advantages. Learn more at Halliday.
Halliday Payments is fully non-custodial—meaning neither the protocol nor the business integrating it ever holds user funds. This eliminates custody-related liabilities and aligns with regulatory expectations around financial responsibility and data privacy. Users remain in full control of their assets throughout the transaction flow. Explore the architecture at Halliday.
The Workflow Protocol is Halliday’s open infrastructure layer that enables developers to build complex cross-chain applications without managing gas, retries, or smart contracts manually. It abstracts execution, monitoring, and reliability across chains, letting you deploy features like recurring payments, token sales, or AI-agent workflows in hours instead of months. Start building with it via Halliday.
Yes. Halliday Payments offers a Headless SDK that gives developers complete control over UI and UX. You can integrate the core payment logic invisibly while keeping your app’s design consistent. Alternatively, use the plug-and-play widget for fast deployment. Both options support full customization. Get started at Halliday.
Unlike standalone onramps, Halliday unifies the entire payment journey—combining fiat onramps, token swaps, bridges, offramps, and centralized exchange access into one product. It also includes developer tools like the Workflow Protocol for automation and customization. It’s more than an onramp—it's a full-stack, programmable commerce solution. Learn how it compares at Halliday.