plainchain.appin60.com
plainchain.appin60.com · 6 paid endpoints · listed 2026-10-27
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.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | plainchain.appin60.com/v1/fact A random crypto history fact (Bitcoin genesis, Pizza Day, The Merge, EIP-1559, x402 and HTTP 402, USDC, Base...), picked by the latest Base block hash. For agen | $0.001042 | Base |
| GET | 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 the draw. For agent greetings, daily posts | $0.001042 | Base |
| GET | 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 transfer, DEX swap and NFT mint. Use before se | $0.001042 | Base |
| GET | 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, decoded: version, header used, scheme, amou | $0.001042 | Base |
| GET | plainchain.appin60.com/v1/balances Wallet balances with USD values on Base, Arbitrum, Ethereum or Optimism: native ETH plus USDC, USDT, WETH and the chain's major tokens, plus up to 10 extra toke | $0.001942 | Base |
| GET | 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 endpoints), ranked by distinct paying wallets in t | $0.001942 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 2 h ago | plainchain.appin60.com/v1/balances | 402 | 516 | valid x402 v2 terms |
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
Is this your API?
<a href="https://logicnodes.io/observatory/p/plainchain.appin60.com"><img src="https://logicnodes.io/observatory/badge/plainchain.appin60.com.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/plainchain.appin60.com