Without Aurora ETH

The Aurora relayer rejects transactions with gas price 0. The Aurora engine accepts them when its submit method is called directly on NEAR, and then the NEAR account pays NEAR gas. scripts/aurora-submit.mjs builds on that:

1. Forge simulates a script against Aurora (no --broadcast).
2. The script signs each transaction from the dry run at gas price 0.
3. It hands the raw transaction to aurora.submit through near-cli-rs, waits for the receipt, and fails on a revert. Nonces already used are skipped, so a run can resume.

pnpm rpc:testnet &
export WALLET_PK=…   # the Aurora signer; the simulation reads it too
cd contracts && forge script script/Deploy.s.sol --rpc-url aurora_testnet --legacy
NEAR_SIGNER=you.testnet node ../scripts/aurora-submit.mjs broadcast/Deploy.s.sol/1313161555/dry-run/run-latest.json

That is how Pearn's testnet contracts, the oracle's first sync and the demo markets went live.

The keeperCopy Anchor Link

.github/workflows/keeper.yml calls oracle.sync() every 12 hours the same way. The NEAR account pearn-sync.testnet signs with a function-call key that can only call aurora.submit (5 NEAR allowance). The Aurora signer is a separate keeper wallet holding no ETH.