Startup profile · funding coverage
Halliday
Agentic workflow protocol for Web3 — aims to let developers build on-chain apps without hand-writing every smart contract.
Stage
series a
Status
private
Coverage
full
Why Halliday is interesting
Second a16z crypto round after $6M seed (2022); targets AI agents that operate safely on blockchain rails.
Key facts
- Seed (2022): $6M led by a16z crypto (company blog)
- Series A (Mar 2025): $20M led by a16z crypto; SV Angel, Avalanche Blizzard Fund, Credibly Neutral, Alt Layer participated (Halliday blog)
- Co-investors not in VCT directory: SV Angel, Avalanche Blizzard Fund, Credibly Neutral, Alt Layer
- VCT directory co-investors: none mapped (non-directory syndicates noted above); reviewed 2026-07-24
Investors in our directory
Funds linked from Halliday's profile — open a fund page for stage focus and related deal articles.
Industries
Enterprise SaaS
Industry hub pages are rolling out from our fund-derived baseline taxonomy.
FAQs about Halliday
Funding context and why this company shows up in venture coverage.
Halliday is listed among Andreessen Horowitz (a16z) investments on a16z’s public investment list.
We track a16z-backed companies that are strategically relevant for founders and investors following AI, American Dynamism, crypto, bio, and enterprise software.
Last updated: 2026-07-24