What to Build

​

UX & Wallet

1. Gasless WebAuthn Smart Wallet

• Primitives: ERC-4337 (EntryPoint v0.6/v0.7), RIP-7212 (R1), Permit2, Bundler3
• Build: WebAuthn login → session keys → sponsored gas. One-click swap (Sushi v3) + deposit (MetaMorpho/Yearn) with signature approvals.
• Agglayer: Fund from another chain, bridge via Agglayer, continue flow seamlessly on Katana.

2. Portfolio With One-Click Strategy Entry

• Primitives: AUSD, SushiSwap v3, Morpho Blue, MetaMorpho, Multicall3, Oracles (Chainlink/RedStone)
• Build: Execute wrap→swap→supply→allocate in one batched tx. Show oracle-guarded slippage and projected APY.
• Agglayer: Detect assets on other chains, auto-bridge, then proceed on Katana.

3. Smart Account Policy Manager

• Primitives: ERC-4337, Permit2, Gnosis Safe, MultiSendCallOnly
• Build: Per-app spending limits, time windows, emergency pause and mass-revoke. Export/import policies for teams/families.
• Agglayer: Policies portable across chains integrated in the account stack.

​

Frontend Apps

4. Cross-Chain On-Ramp Router

• Primitives: Agglayer Bridge, Native Converters (WETH/USDC/USDT/WBTC), AUSD
• Build: Quote best path from origin chain funding to target Katana asset. Auto wrap/unwrap, swap on Sushi v3, and deposit.
• Agglayer: Single UX that abstracts chain boundaries for on-ramping.

5. DeFi Command Palette

• Primitives: Bundler3, Permit2, SushiSwap v3, Morpho Blue, MetaMorpho
• Build: Spotlight-like command bar: “Borrow 500 AUSD,” “Rebalance LP to 1% band,” “Exit all to AUSD.” Persist recipes.
• Agglayer: Commands that include bridge+execute across chains.

6. NFT Creator Studio with Seaport + Catalogs

• Primitives: Seaport, Conduit, Catalog/Render utils, Bulk Writer
• Build: Launch collections, manage traits, bulk updates, criteria orders, creator analytics.
• Agglayer: Claim passes on another chain, redeem on Katana.

​

Back-End Services

7. Intent Relayer with Risk Controls

• Primitives: ERC-4337, Oracles (Chainlink/RedStone), Bundler3, CreateX
• Build: Convert intents into bounded transactions with price bands/circuit breakers, deploy ephemeral routers deterministically.
• Agglayer: Execute intents that include bridge legs mid-flow.

8. Multicall State Cache

• Primitives: Multicall3, Oracles
• Build: High-speed read cache for dashboards; snapshots and historical deltas.
• Agglayer: Unified state view spanning Katana and connected chains.

9. Enterprise Treasury Automations

• Primitives: Gnosis Safe, MultiSend, Yearn, MetaMorpho
• Build: Scheduled payouts, ticketed approvals, share-class accounting, and rebalancing into vaults and lending.
• Agglayer: Policies govern cross-chain flows and settlements.

​

DeFi Primitives & Products

10. Auto-Hedged LP Vault

• Primitives: SushiSwap v3, Oracles, (Optional) Perps venue, Bundler3
• Build: LP in bands, hedge delta with perps, auto-roll ranges based on signals.
• Agglayer: Hedge on chain A, LP on Katana; manage from one UX.

11. Collateralized Credit Lines for Creators

• Primitives: Morpho Blue, Oracles, AUSD
• Build: Tokenize revenue/holdings to draw credit lines with dynamic LTV and health monitors.
• Agglayer: Accept revenue attestations from other chains, settle on Katana.

12. Yield-Diversified AUSD Wrapper

• Primitives: AUSD, MetaMorpho, Yearn, Oracles
• Build: Wrapper rotates allocation among vaults; publishes on-chain NAV; instant mint/redeem.
• Agglayer: Allocate yield across chains where vaults are strongest.

13. Structured Basis Trade

• Primitives: (Optional) Perps venue, Oracles, Morpho Blue
• Build: Long spot via Sushi v3 + short perps; capture funding; one-click unwind; downloadable PnL.
• Agglayer: Route to best perps venue while settling on Katana.

14. Stable Rails for Subscriptions

• Primitives: AUSD, Permit2, ERC-4337
• Build: Merchant SDK with pull-payments via signatures, subscription windows, retry logic, and disputes.
• Agglayer: Merchants settle on their chain; users pay from Katana balances.

15. Vault-Bridged Corporate Cards

• Primitives: bvbETH/bvbUSDC, vbETH/vbUSDC, ERC-4337, RIP-7212
• Build: Balances earn yield while idle; device-bound approvals; per-employee limits and just-in-time top-ups.
• Agglayer: Spending limits consider balances across chains.

​

AI x Crypto

16. AI Strategy Copilot

• Primitives: Oracles, AUSD, SushiSwap v3, Morpho Blue, MetaMorpho/Yearn, Bundler3
• Build: Natural-language to portfolio: simulate, explain risk, then execute via batched tx with protected slippage.
• Agglayer: Cross-chain route planning and execution.

17. Fraud & Anomaly Sentinel

• Primitives: Oracles, Gnosis Safe, MultiSendCallOnly
• Build: ML signals flag anomalies; auto-prepare “pause/withdraw to safety” bundles for review and 1-click execution.
• Agglayer: Sentinel watches and can act across networks.

18. Intent Market Maker

• Primitives: Bundler3, CreateX, SushiSwap v3, (Optional) Perps
• Build: Agent quotes and fulfills user intents, deploying deterministic routers, hedging inventory.
• Agglayer: Route order flow to best liquidity anywhere; settle on Katana.

​

Cross-Chain & Agglayer-Native

19. Unified Trading Terminal

• Primitives: Agglayer Bridge, SushiSwap v3, (Optional) Perps, Oracles, Converters
• Build: One screen to trade spot/perps; bridge collateral in-line; unified margin and risk.
• Agglayer: Abstract chain boundaries for capital and execution.

20. Cross-Chain Streaming Payroll

• Primitives: AUSD, Agglayer Bridge, Permit2
• Build: Real-time payroll that follows recipients across chains; failover and caching; employer dashboards.
• Agglayer: Streams reroute during congestion or maintenance.

21. Origin-Aware Savings

• Primitives: vbETH/vbUSDC vaults, bvbETH/bvbUSDC on Katana, Yearn/MetaMorpho
• Build: Deposit anywhere; earn at origin or destination; unified balance view; emergency exit.
• Agglayer: Auto-select best yield location; move funds accordingly.

​

Infra & Tooling

22. Deterministic Factory Explorer

• Primitives: CreateX, DeterministicDeploymentProxy, Bundler3
• Build: Compute addresses for salts/bytecode; verify deployments; generate “deploy+initialize” bundles; export SDK snippets.
• Agglayer: Coordinate mirrored deployments across chains.

23. Oracle Guardrails Kit

• Primitives: Chainlink, RedStone, MultiSendCallOnly
• Build: Drop-in guards for price bands, TWAP checks, stale feed detection; composable policy library.
• Agglayer: Consistent guardrails across chains.

24. Address & ABI Concierge

• Primitives: utils/addresses, Multicall3
• Build: Dev portal or API that resolves names to addresses/ABIs per chain (including origin mapping), plus live contract sanity checks using multicall.
• Agglayer: One resolver interface for the entire connected set.