
Halliday
Halliday is a unified crypto payments platform that lets users onramp, bridge, and swap cross-chain with a single click.

What is Halliday?
Halliday is a unified crypto payments platform that enables seamless fiat-to-crypto onramps, cross-chain bridges, and swaps. It integrates top bridges and DEXs, intelligently routing through the best onramps, swaps, and bridges based on geography, payment method, and latency. With a fully non-custodial design, Halliday handles retries, gas payments, asset balances, transaction formation, batch scheduling, and network routing — all with a single click. Developers can set up a deposit UI with 7 lines of code or build a custom experience with a flexible API.
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App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

