Migrate from Gelato to self-hosted transaction relayer - #1030
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Replace GelatoGaslessTransactionSender with AcreRelayerTransactionSender
that POSTs {chainId, to, data} to the new acre-api endpoint at
/api/v2/relay/transactions. Drop @gelatocloud/gasless dependency and
the gelatoApiKey argument to Acre.initialize.
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Summary
GelatoGaslessTransactionSender(which called@gelatocloud/gasless) withAcreRelayerTransactionSender, a thin client that POSTs{chainId, to, data}to a self-hosted endpoint.@gelatocloud/gaslessdependency and thegelatoApiKeyargument fromAcre.initialize— replaced byrelayerUrl.VITE_RELAYER_URLto dapp env files; expose it throughenv.RELAYER_URLand pass it into the SDK init..prettierignoretweak (excludes the localledger/Python venv) so the existing pre-commit lint hook passes.Why
Migrating the dapp's withdrawal relay off Gelato. Biconomy was evaluated as a successor but its current product (AbstractJS / Nexus) requires either a new smart-account model or an EOA — neither matches OrangeKit's Gnosis-Safe-via-Bitcoin-signature setup, and migrating to Nexus would change every user's Ethereum address. A self-hosted relayer (modelled on Mezo's
passport-relay) preserves Safe addresses and lets us own the cost / abuse story.The companion server-side endpoint lives in
acre-btc/backendPR — that one must deploy before this one is rolled out.Notes
VITE_GELATO_RELAY_API_KEYis intentionally left in place; it's still consumed by the OrangeKit wagmi connector for connector-internal relay (separate path from the SDK relay we're replacing here). No OrangeKit changes were made.VITE_RELAYER_URLin the Netlify dashboard for production and staging deploys.Test plan
pnpm --filter @acre-btc/sdk testpasses (151 tests, includes 6 new forAcreRelayerTransactionSender).pnpm --filter dapp buildsucceeds.VITE_RELAYER_URLpointing at the deployed staging relayer: connect Bitcoin testnet wallet → deposit (existing path, untouched) → withdraw → confirm tx hash returned, explorer shows the relayer EOA paid gas, the user's Safe is themsg.sendertoacreBTC.approveAndCall.