Phase 1: Sui + Solana

Date: 2026-07-11
Status: Locked for first public phase
Repo: open-yield (local)

Decision

Phase 1 launches on two execution homes:

Chain	Role	Default venue	Fallback
Sui	Execution home	Suilend (USDC)	NAVI
Solana	Execution home	Kamino (USDC)	marginfi

Not Phase 1 execution homes: Base, Ethereum (still OK for DefiLlama map + Mayan bridge-in to a home).

Product rules (unchanged)

• Stake OFF by default
• Fee 500 bps on harvested yield only
• Discovery ≠ execution truth (read_apy per venue/chain)
• No team custody of principal
• Owner can always withdraw

Cross-home funding

Path	Phase 1
Base/Eth → Sui	Mayan plan
Base/Eth → Solana	Mayan plan
Solana ↔ Sui	Mayan plan (owner-initiated)
In-chain Sui swap	Turbos plan
In-chain Solana swap	Jupiter plan (stub)

API surface

• GET /api/open-yield/readiness → launchHomes: ["sui","solana"]
• GET /api/open-yield/venues?chain=sui|solana
• Policy: targetChain, targetVenue, allowedChains
• Stake/unstake body may set chain + venue

Code map

Module	Path
Chain registry	runtime/chains/phase1.mjs
Adapters	runtime/adapters/venue-adapters.mjs
Bridge	runtime/bridge/mayan-plan.mjs
Policy	runtime/policy/auto-yield-policy.mjs
Scorer	runtime/scorer/auto-yield-scorer.mjs

XEL integration note

XEL character endowments remain Sui-native objects today. Open Yield Phase 1 still serves:

1. Sui path — plug into XEL treasury / Suilend (proven live $0.10 smoke).
2. Solana path — standalone Open Yield positions + agent API (Kamino/marginfi adapters); bridge residual to Sui endowment when owner wants XEL survival home.

Live smoke (Sui)

See docs/12-live-smoke-treasury-2026-07-11.md — mainnet Suilend supply/withdraw via XEL yield signer.