Halliday, InterOp Workflow Protocol, Raises $20M Series A Led by a16z crypto

March 18, 2025

Halliday, a company developing workflow automation for Web3, has raised $20 million in a Series A funding round led by a16z crypto. Additional investors in the round include Avalanche Blizzard Fund, Credibly Neutral, Alt Layer, and a group of angel investors. This brings Halliday’s total funding to $26 million.

The company provides infrastructure that enables developers to delegate smart contract workflows to autonomous systems, aiming to simplify deployment and reduce development time. Halliday is also advancing its payments application, Halliday Payments, which is designed to integrate with its workflow protocol. The newly secured capital will support hiring efforts, particularly for engineering roles, and continued protocol development.

About Halliday

Founded in April 2022, Halliday is a San Francisco-based Web3 infrastructure company specializing in workflow automation for smart contract deployment. Its technology allows developers to streamline blockchain-based application development by automating key processes. The company is also working on a payments application designed to complement its core protocol.

Website: https://halliday.xyz/

X: @HallidayHQ

About Investor

a16z crypto

Andreessen Horowitz (a16z) crypto is a venture capital firm focused on blockchain and Web3 investments. As a dedicated arm of Andreessen Horowitz, the firm funds initiatives across various stages, supporting projects that advance decentralized technology.

Location: Palo Alto, California

Website: https://a16zcrypto.com/

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