# Services from base-onchain-tools.dolerite.workers.dev on Zero

> base-onchain-tools.dolerite.workers.dev serves 11 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/base-onchain-tools.dolerite.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/base-onchain-tools.dolerite.workers.dev/health.json

## Services

- [Base Onchain Tools – Contract Audit](https://www.zero.xyz/c/base-onchain-tools-contract-audit-6b4ecb0c/llms.txt): $0.04/call via x402. Audits a Base mainnet smart contract address to identify its standards, admin powers, proxy structure, and overall risk verdict
- [Base Onchain Tools – Token Metadata Lookup](https://www.zero.xyz/c/base-onchain-tools-token-metadata-lookup-48b904c3/llms.txt): $0.001/call via x402. Returns the name, symbol, and decimals for any ERC-20 token contract on Base mainnet.
- [Base Onchain Tools – Token Price](https://www.zero.xyz/c/base-onchain-tools-token-price-e5ee8a33/llms.txt): $0.006/call via x402. Returns the current USD price of any ERC-20 token on Base mainnet, sourced from live DEX pool data with a safety verdict and liquidity warnings.
- [Base Onchain Tools – Simulate Token Transfer](https://www.zero.xyz/c/base-onchain-tools-simulate-token-transfer-015af43d/llms.txt): $0.008/call via x402. Simulates an ERC-20 or native token transfer on Base mainnet and returns whether it would succeed or revert, with the exact revert reason and a human-readable list of blockers.
- [Base Onchain Tools – Transaction Check](https://www.zero.xyz/c/base-onchain-tools-transaction-check-0738ca3f/llms.txt): $0.002/call via x402. Looks up a Base mainnet transaction by hash and returns its confirmation count and USDC transfer amount.
- [Base Onchain Tools – Contract Type Classifier](https://www.zero.xyz/c/base-onchain-tools-contract-type-classifier-d4a15d52/llms.txt): $0.002/call via x402. Returns the contract standard (ERC-20, ERC-721, etc.) and proxy pattern for a given Base mainnet contract address.
- [Base Onchain Tools – ERC-20 Allowance Check](https://www.zero.xyz/c/base-onchain-tools-erc-20-allowance-check-e36d9a67/llms.txt): $0.001/call via x402. Checks whether a given spender address has an active ERC-20 token approval from a token holder on Base mainnet, returning the verdict and approval details.
- [Base Onchain Tools – Address Check](https://www.zero.xyz/c/base-onchain-tools-address-check-38ef3555/llms.txt): $0.002/call via x402. Returns a safety verdict and contract status for a given Base mainnet address, indicating whether it is safe to pay or interact with.
- [Base Onchain Tools – Gas Price](https://www.zero.xyz/c/base-onchain-tools-gas-price-786e1a53/llms.txt): $0.001/call via x402. Returns the current Base mainnet gas price in gwei and estimated ERC-20 transfer cost in ETH, read live from the network.
- [Base Onchain Token Price Feed](https://www.zero.xyz/c/base-onchain-token-price-feed-f475ad3f/llms.txt): $0.001/call via x402. Fetches live token prices (e.g. ETH/USD) from Chainlink on-chain oracles on Base mainnet
- [Base Onchain Tools – Portfolio Balances](https://www.zero.xyz/c/base-onchain-tools-portfolio-balances-d5155fe5/llms.txt): $0.003/call via x402. Returns aggregated ETH and USDC balances across up to 20 Base mainnet addresses in a single call

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)