Jayverse Wallet — simulate before sign

Phase 1 MVP. Every transaction is decoded and previewed before the signature — token deltas, approvals, and warnings.

1. Set up demo token

Connect a wallet in the widget, then deploy a local mock ERC-20 (jUSD) and mint 1,000 to your account. This lets the ERC-20 presets run against a bare anvil node — no mainnet fork required.

2. Pick a transaction to preview

Send 0.5 ETH (value-drain)Approve 10 exact → Verex Exchange (no warnings) (deploy token first)Transfer 25 tokens away (value-drain) (deploy token first)Unlimited approval → unknown spender (widening) (deploy token first)Transfer more than balance (revert) (deploy token first)

3. Preview & sign

JayverseSign

Connect once, preview every transaction before you sign.

Not built in Phase 1: session keys (ERC-7715/7710), full 4337 UserOperation simulation through the EntryPoint, ERC-721/1155 decoding, and USD price feeds. See the README for the full scope.