About HALLIDAY
Halliday is a blockchain company and product lab working to create a unified, cross-chain payments ecosystem. Its flagship offering, Halliday Payments, is a unified payments platform that enables users to onramp from fiat, swap across chains, and take onchain actions with minimal friction. The platform integrates top bridges and DEXes, instantly adding new pathways to tokens while intelligently routing through the best onramps based on geography, payment method, and latency. Backed by a16z crypto and Hashed, Halliday has worked with prominent developers including ApeChain, Story Protocol, and DeFi Kingdoms to provide seamless experiences for both developers and end users. The company operates on a fully non-custodial basis, meaning users connect their own wallets (such as MetaMask) and retain complete control of their funds at all times. Halliday never takes custody of user assets. Developers can integrate the payment solution with just 7 lines of code using the SDK widget, or leverage the headless API for complete customization. The platform supports any token on any chain, making it a universal payment infrastructure layer for the multi-chain web3 ecosystem. Halliday raised $20 million in Series A funding in March 2025, bringing total raised to $26 million.
Key Infrastructure
Onramp
Fiat-to-crypto onramp connecting Stripe, Coinbase Pay, MoonPay and Transak for day-one access to fiat
Centralized Exchange Integration
Enables users to purchase tokens directly from CEX accounts (Coinbase) to any network
Bridge Integration
Simplifies bridging complexity across chains regardless of canonical or third-party bridges
Deposit Flow
Unified deposit UI with 7 lines of code or flexible API for custom implementations
Cross-Chain Swaps
Intelligently routes optimal swap paths finding best rates across DEXs without multiple transactions
Agentic Workflow Protocol
AI-powered protocol enabling autonomous multi-chain workflows without writing smart contracts
Additional Features
Smart Routing
Intelligently routes based on geography, payment method and latency for optimal user experience
SDK Widget
Pre-built UI components for quick integration (deposit UI in 7 lines of code)
Automated Workflows
Protocols can compose cross-network interactions (purchase, swap, stake) in single click
Headless API
Full API access for developers wanting complete control over user experience
Self-Custodial Design
Users connect any wallet and remain in complete control - Halliday never takes custody
Expansive Coverage
Integrates top bridges and DEXs, instantly adding new pathways to tokens