Walrus & Seal on Sui — Building the Stack Overflow's Headline Track
Most teams use Walrus the way they used S3 — dump bytes in, fetch them back, move on. That's a missed opportunity. Walrus is the headline partner of Sui Overflow 2026, and the track description explicitly asks for "AI agents and agentic workflows powered by Walrus as a verifiable data and memory layer." Translation: judges aren't looking for storage swaps, they're looking for the full stack used in concert — Walrus for verifiable blobs, Seal for encryption gated by Move policies, MemWal as the agent memory primitive, Walrus Sites for the frontend itself. This session takes you through that entire stack end-to-end, with code, and ends with a working Private Vault you can extend into a submission for either the Walrus or Agentic Web track.
What You'll Learn
What Walrus actually is under the hood — blobs, epochs, RedStuff erasure coding, on-chain attestation, and why it isn't IPFS
The Walrus CLI and TypeScript SDK — storing, retrieving, and managing blob lifecycle from real code
How Walrus Sites deploy frontends with no AWS, no Vercel, no central host — and why judges visibly react to it
Seal end-to-end: identity-based encryption, threshold key servers, and writing Move-gated decryption policies
MemWal as the canonical agent memory primitive — delegate keys, scoped writes, semantic recall for autonomous agents
How to ship a working Private Vault by the end of the day: Seal-encrypted file storage, on-chain access policy, frontend served from a Walrus Site
Who Should Attend
Sui developers planning to submit to Overflow 2026's Walrus or Agentic Web tracks
Backend engineers tired of rolling their own "encrypted blob storage" from primitives every time
Builders working on AI agents that need persistent, private, verifiable memory
Anyone who wants their submission to look structurally like Mysten's own Sui Stack Messaging reference
What to Bring
Your laptop
Sui CLI installed (
brew install sui)Walrus CLI installed (
curl -sSf https://docs.wal.app/setup/walrus-install.sh | sh)Walrus Sites site-builder installed
Node.js 20+ and pnpm
A testnet Sui wallet funded with SUI and WAL (
sui client faucet,walrus get-wal)Basic familiarity with TypeScript and Move
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