openapi: 3.1.0 info: title: GoldRush Foundational ABI Cross-Chain API description: 'Structured historical blockchain data across 100+ chains via REST. Resource families include Balances (native, ERC20, ERC721, ERC1155, historical portfolios, token holders), Transactions (v3 paginated, time-bucketed, by-block), NFTs, Base service (blocks, logs, gas prices, address resolution), Cross-Chain Activity, Pricing, and Security (token approvals). ' version: v1 contact: name: GoldRush Support url: https://goldrush.dev/support/ license: name: Covalent Terms of Service url: https://www.covalenthq.com/terms-of-service/ servers: - url: https://api.covalenthq.com description: GoldRush production server security: - BearerAuth: [] tags: - name: Cross-Chain description: Discover an address's activity across all supported chains. paths: /v1/address/{walletAddress}/activity/: get: summary: Get Activity Across All Chains For Address operationId: getActivityAcrossAllChainsForAddress tags: - Cross-Chain parameters: - $ref: '#/components/parameters/WalletAddress' responses: '200': description: OK /v1/allchains/address/{walletAddress}/balances/: get: summary: Get Multichain Balances operationId: getMultichainBalances tags: - Cross-Chain parameters: - $ref: '#/components/parameters/WalletAddress' responses: '200': description: OK /v1/allchains/transactions/: get: summary: Get Multichain Multiaddress Transactions operationId: getMultichainMultiaddressTransactions tags: - Cross-Chain responses: '200': description: OK components: parameters: WalletAddress: name: walletAddress in: path required: true description: Wallet address. EVM 0x-prefixed; ENS / Lens / Unstoppable names also accepted on Base service. schema: type: string securitySchemes: BearerAuth: type: http scheme: bearer description: 'GoldRush API key, sent as `Authorization: Bearer `.'