Add gasless USDC deposit on Base (x402)#237
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gianalarcon merged 1 commit intodevelopfrom Apr 25, 2026
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* refactor: improve layout and responsiveness in Quest and Batch components (#200) - Updated QuestPage layout for better responsiveness with max-width and padding adjustments. - Changed BatchTransactions and TransactionSummary components to use flexbox for improved item alignment and responsiveness. - Enhanced QuestCard to allow for flexible width. - Added titles for new routes in the Title component. * Refactor/extract magic numbers to constants (#203) * refactor: adjust z-index values across various components for improved UI layering * feat: add timing constants for HTTP timeouts, cache TTL, and retry delays - Introduced new timing constants in `timing.ts` for backend and nextjs packages. - Updated index files to export the new timing constants for better accessibility. refactor: replace hardcoded values with timing constants for retries and timeouts - Updated various services and modules to utilize new timing constants for retries and timeouts, improving maintainability and consistency across the codebase. - Adjusted `waitForReceiptWithRetry`, `PriceService`, `ZenTransferService`, `TransactionService`, and `ZkVerifyService` to use centralized timing configurations. refactor: replace hardcoded values with timing constants across components and hooks - Updated various components and hooks to utilize new timing constants for polling intervals, refetch intervals, and timeouts, enhancing maintainability and consistency throughout the codebase. - Adjusted `NotificationItem`, `ClaimSection`, `EditAccountModal`, and several hooks to reference centralized timing configurations. refactor: standardize formatting and improve component styles - Refactored various components to enhance code readability by standardizing formatting, including consistent indentation and spacing. - Updated styles across components to utilize new shadow and height constants for improved UI consistency. - Adjusted text sizes in multiple components to ensure uniformity in typography. * refactor: enhance component structure and user feedback in NewAccount sections (#206) - Updated ChooseNetwork component to include wallet connection checks and commitment validation, enhancing user experience with appropriate notifications. - Adjusted StatusContainer to allow copying of commitment addresses to clipboard for better usability. - Enhanced Sidebar component to incorporate wallet connection status in navigation logic. * feat(x402): gasless USDC deposit for Base multisigs (#237) * fix(frontend): prevent duplicate modals from stacking on repeated openModal calls (#241) * fix(nextjs): stop auto-enabling Ethereum mainnet in wagmi config (#242) * fix(deploy): wire NEXT_PUBLIC_FEATURE_X402_DEPOSIT through Docker build args (#243) * feat: migrate proving system from UltraPlonk to UltraHonk (#229) * feat: migrate proving system from UltraPlonk to UltraHonk * refactor: extract shared account formatter and replace magic numbers with constant * fix: resolve PR review issues for UltraHonk migration * refactor(nextjs,docs): rename UI label Commitment to Membership ID (#244) * chore: hide Quest and Leaderboard from app and docs (#245) * feat(nextjs): redesign Portfolio receive flow + add wallet version badge (#246) * chore: disable Quest, Leaderboard, Reward, and Partner endpoints on backend (#247)
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Add gasless USDC deposit on Base (#238)
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PolyPay users can now top up a multisig with USDC on Base in a single click — no
ETH or gas needed. The deposit also works for AI agents and external apps that
speak the x402 standard, so anyone (or any bot) can fund a PolyPay treasury just
by knowing its address.
How to test:
within seconds.
UI Screen
How an agent can use it:
An AI agent (or any third-party script) can fund a PolyPay multisig autonomously,
with no PolyPay account needed. The agent just needs the multisig address and a
wallet with USDC. It calls our public deposit URL using any standard x402 client
library — same flow, just done programmatically instead of through the app. This
is what enables the "AI agent treasurer" use case: a bot that monitors a treasury
and tops it up automatically when balance runs low.