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plainchain.appin60.com

Current gas price on Base, Arbitrum, Ethereum or Optimism, with the USD cost right now of an ETH transfer, ERC-20 transfer, DEX swap and NFT mint. Use before sending a transaction to pick a chain or decide whether to wait.

Visit plainchain.appin60.com

Hostplainchain.appin60.com
Price$0.001–$0.0019 per call
NetworkBase
Paid endpoints listed6
Calls, last 30 days*13
Most unique payers on one endpoint (30 days)*3
Last paid call*2026-10-15

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URLMethodPrice
https://plainchain.appin60.com/v1/gas
Current gas price on Base, Arbitrum, Ethereum or Optimism, with the USD cost right now of an ETH transfer, ERC-20…		GET$0.001
https://plainchain.appin60.com/v1/x402/echo
Debug your x402 client on Base mainnet for $0.001: returns the payment payload your client actually signed and sent,…		GET$0.001
https://plainchain.appin60.com/v1/fortune
A crypto fortune cookie: one short line of on-chain wisdom, picked by the latest Base block hash so anyone can verify…		GET$0.001
https://plainchain.appin60.com/v1/fact
A random crypto history fact (Bitcoin genesis, Pizza Day, The Merge, EIP-1559, x402 and HTTP 402, USDC, Base...),…		GET$0.001
https://plainchain.appin60.com/v1/bazaar/search
Find x402 APIs that agents actually pay for: keyword search over the whole Coinbase x402 Bazaar (31,000+ paid…		GET$0.0019
https://plainchain.appin60.com/v1/balances
Wallet balances with USD values on Base, Arbitrum, Ethereum or Optimism: native ETH plus USDC, USDT, WETH and the…		GET$0.0019

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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