# Services from api.mach.gallery on Zero

> api.mach.gallery serves 17 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.mach.gallery
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.mach.gallery/health.json

## Services

- [Mach Gallery Base Block Number](https://www.zero.xyz/c/mach-gallery-base-block-number-a106337f/llms.txt): $0.005/call via x402. Returns the current block number on the Base (EVM chain eip155:8453) network, paid per call via x402 USDC microtransaction.
- [Mach Gallery Base Token Total Supply](https://www.zero.xyz/c/mach-gallery-base-token-total-supply-b11c971c/llms.txt): $0.005/call via x402. Returns the total supply (in atomic units) of a given ERC-20 token on the Base network
- [Mach Gallery Base Wallet Balance](https://www.zero.xyz/c/mach-gallery-base-wallet-balance-38bf6802/llms.txt): $0.005/call via x402. Returns the native ETH balance (in wei) of a given EVM wallet address on the Base network (chain ID 8453)
- [Mach Gallery Base Nonce Lookup](https://www.zero.xyz/c/mach-gallery-base-nonce-lookup-8fbaaad6/llms.txt): $0.005/call via x402. Returns the current transaction nonce for an EVM address on the Base blockchain (chain ID 8453)
- [Mach Gallery Base Gas Price](https://www.zero.xyz/c/mach-gallery-base-gas-price-cdb4bd71/llms.txt): $0.005/call via x402. Returns the current gas price on the Base (EVM chain eip155:8453) network in wei, with no API key required — pay per call with USDC via x402.
- [Mach Gallery Base ERC-20 Allowance Lookup](https://www.zero.xyz/c/mach-gallery-base-erc-20-allowance-lookup-cadacf81/llms.txt): $0.005/call via x402. Returns the ERC-20 token allowance granted by an owner to a spender on the Base network
- [Mach Gallery Base Logs Fetch](https://www.zero.xyz/c/mach-gallery-base-logs-fetch-28d2260a/llms.txt): $0.005/call via x402. Fetches event logs emitted by a smart contract address on the Base blockchain within a specified block range and filtered by topics
- [Mach Gallery Base Contract Code Lookup](https://www.zero.xyz/c/mach-gallery-base-contract-code-lookup-c4c48953/llms.txt): $0.005/call via x402. Retrieves the deployed bytecode and contract status for a given EVM address on the Base network
- [Mach Gallery Base Transaction Context](https://www.zero.xyz/c/mach-gallery-base-transaction-context-df869fc7/llms.txt): $0.008/call via x402. Retrieves full contextual details for a specific Base (EVM) transaction by hash, including status, gas, value, and confirmation count
- [Mach Gallery ERC-20 Balance on Base](https://www.zero.xyz/c/mach-gallery-erc-20-balance-on-base-8fb56500/llms.txt): $0.005/call via x402. Returns the ERC-20 token balance for a given wallet address on the Base (EIP-155:8453) network
- [Mach Gallery Base Transaction Receipt Lookup](https://www.zero.xyz/c/mach-gallery-base-transaction-receipt-lookup-061c6963/llms.txt): $0.005/call via x402. Fetches the receipt and confirmation status of a Base (EVM) transaction by its hash, returning success status, block number, and confirmation count.
- [MACH Base ERC20 Transfers](https://www.zero.xyz/c/mach-base-erc20-transfers-d30a08b6/llms.txt): $0.005/call via x402. Queries ERC20 token transfer events on Base mainnet filtered by token contract, sender, receiver, and block range
- [Mach Gallery Base Contract Info](https://www.zero.xyz/c/mach-gallery-base-contract-info-952794cf/llms.txt): $0.005/call via x402. Returns on-chain metadata for any EVM contract address on Base, including token type, name, symbol, decimals, bytecode size, and total supply.
- [Mach Gallery Base ETH Call](https://www.zero.xyz/c/mach-gallery-base-eth-call-779f53f7/llms.txt): $0.005/call via x402. Executes a read-only eth_call on the Base (EVM chain ID 8453) network at a given contract address, returning the raw hex result.
- [MACH Base Wallet Snapshot](https://www.zero.xyz/c/mach-base-wallet-snapshot-e09bdf67/llms.txt): $0.005/call via x402. Returns a point-in-time snapshot of a Base wallet's native ETH balance and ERC-20 token balances for specified token contracts.
- [Mach Gallery Base Transaction Lookup](https://www.zero.xyz/c/mach-gallery-base-transaction-lookup-082f5702/llms.txt): $0.008/call via x402. Fetches full transaction details for a given transaction hash on the Base blockchain (EIP-155 chain 8453), paid per-call with USDC via x402.
- [MACH Base Block Lookup](https://www.zero.xyz/c/mach-base-block-lookup-2574ab4f/llms.txt): $0.005/call via x402. Fetches a specific block from the Base mainnet blockchain by block number or hash, returning full block data

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)