Roundhouse

plainchain.appin60.com

No description published for this endpoint.

OtherLiveeip155:8453Exactvia facilitator:thirdweb
https://plainchain.appin60.com/v1/gas
Calls · 30d
3
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far.
$0.57
Verified settled volume
67 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
      "amount": "1042",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://plainchain.appin60.com/v1/gas",
    "mimeType": "application/json",
    "description": "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."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "chain": "base"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "block": 36581662,
            "chain": "Base",
            "ethUsd": 2527.2,
            "chainId": 8453,
            "estimates": {
              "dexSwap": {
                "eth": 0.00000108,
                "gas": 180000,
                "usd": 0.00273
              },
              "ethTransfer": {
                "eth": 1.26e-7,
                "gas": 21000,
                "usd": 0.000318
              },
              "erc20Transfer": {
                "eth": 3.9e-7,
                "gas": 65000,
                "usd": 0.000986
              }
            },
            "baseFeeGwei": 0.005,
            "gasPriceGwei": 0.006,
            "priorityFeeGwei": 0.001
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "chain": {
                    "type": "string",
                    "description": "base (default), arbitrum, ethereum or optimism; chain ids 8453, 42161, 1, 10 also work"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.001042USDC≈ $0.001042 USD
on Base · exact scheme

Pay 0.001042 USDC on Base to 0xB442…24e83. The signed payment is good for 2 minutes.

Paid to
0xB442…24e83
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
1042 smallest units
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://plainchain.appin60.com/v1/gas",
    "description": "",
    "maxAmountRequired": "1042",
    "maxTimeoutSeconds": 120
  }
]

Provenance

Seen in the source catalog
2026-10-14 08:15Z
Last indexed by Roundhouse
2026-10-19 14:15Z
Last enriched (probe, favicon, geo)
2026-10-14 09:46Z
x402 version
1
Max timeout
120s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service plainchain.appin60.com and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=plainchain.appin60.com'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://plainchain.appin60.com/v1/gas, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.