{"service":"base-onchain-tools","description":"Eleven read-only endpoints answering questions about Base mainnet that are tedious to assemble from raw RPC: what an unverified contract is actually able to do, whether a token transfer will revert and for what reason, what an arbitrary token is worth, and whether an address is safe to pay. Priced $0.001-$0.04 per call in USDC over x402. No account, no API key, no signup, no minimum, no rate limit to negotiate — the payTo address in the 402 response is the whole integration. Failed calls are not billed. The payment middleware cancels settlement on any 4xx or 5xx, so a malformed parameter or an upstream outage costs nothing. Answers are read live from Base mainnet at request time, with failover across five independent RPC providers. A batch that comes back incomplete is treated as a failure rather than returned with the missing entries as zeros, because a confident wrong answer costs a caller more than an error does. Scope is deliberately narrow: Base mainnet only, reads only, no keys held, nothing stored between requests.","x402":{"protocol":"x402","version":2,"network":"eip155:8453","asset":"USDC","pay_to":"0x9c9Fb14825ADcA7A3E539EDa354EAFd169D39e9b","facilitator":"https://facilitator.openx402.ai"},"endpoints":{"GET https://base-onchain-tools.dolerite.workers.dev/v1/base/address-check":"$0.002","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/tx-check":"$0.002","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/token":"$0.001","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/gas":"$0.001","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/price":"$0.001","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/contract-type":"$0.002","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/allowance":"$0.001","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/token-price":"$0.006","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/simulate-transfer":"$0.008","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/contract-audit":"$0.04","GET https://base-onchain-tools.dolerite.workers.dev/v1/base/portfolio":"$0.003"}}