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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.
  1. 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.
  1. 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.

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Frontend Apps

  1. 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.
  1. 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.
  1. 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.

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Back-End Services

  1. 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.
  1. 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.
  1. 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.

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DeFi Primitives & Products

  1. 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.
  1. 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.
  1. 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.
  1. 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.
  1. 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.
  1. 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.

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AI x Crypto

  1. 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.
  1. 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.
  1. 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.

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Cross-Chain & Agglayer-Native

  1. 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.
  1. 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.
  1. 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.

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Infra & Tooling

  1. 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.
  1. 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.
  1. 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.