From home: reach Rome from another chain
Let users on another chain reach your Rome app without leaving home — bring assets in, act, take them back out.
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Let users on another chain reach your Rome app without leaving home — bring assets in, act, take them back out.
Your users don't have to move to Rome. From their home chain — an L2 like Arbitrum or Monad, or Solana — they bring assets in, use your Rome app, and take assets back out. The bridge is on-chain and authorized by the user's own signature; you wire your app to it through one API.
Inbound (home → Rome): the user's assets are credited on Rome by the settle_inbound_bridge program, authorized by the user's own signed EIP-712 intent — there is no privileged settler.
Outbound (Rome → home): RomeBridgeWithdraw (in rome-solidity) initiates egress; the asset is released on the home chain.
Transport: Circle CCTP for USDC, Wormhole for ETH and other assets.
Orchestration: the off-chain rome-bridge-api quotes a route, verifies the source-chain transaction, and sponsors the settle fee. It holds no funds and no keys — it can only trigger what the user already signed.
Quote a route from rome-bridge-api for the user's source chain + asset → your Rome chain; it returns the rail (CCTP or Wormhole) and the steps.
Have the user sign the source-chain transaction and the EIP-712 intent.
Submit through the API; it verifies the source transaction and sponsors the settle. The user lands on Rome funded and uses your app.
Bridge out in reverse via RomeBridgeWithdraw.
Quote/route shapes, the rails, and per-asset details are in the repo's docs/BRIDGE_API_ARCHITECTURE.md.
appia — a from-home app: users bring USDC from their home chain and use Rome-side DeFi without leaving it.
rome-bridge-api — the orchestrator (quote → verify → sponsor).
Getting funded — the same bridge path funds a fresh dev wallet.
Deploy Solidity — put your app on Rome.
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