Roundhouse

Genexxis Gas

Cheapest chain to send USDC. Which chain to send a USDC (or native ETH/POL/BNB) transfer on right now: one recommendation plus all chains ranked by USD fee (Ethereum, Base, Arbitrum, OP Mainnet, Polygon, BNB Chain), L1 data fee included, optional fee as % of the amount.

DataLiveeip155:8453Exactvia cdp
https://gas.genexxis.com/cheapest
Transfer-feesCheapest-chainUsdc-transferGas-feesPayment-routing
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
$20.97
Verified settled volume
576 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-11-03 08:14Z
—
Upstream on-chain volume
0 transactions, checked 2026-11-06 10:15Z
Paid to
0x9287e3102D411029025C7617d75245BFc7920f17

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

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider
Coming soonclaradminERC-8004

Accepts

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

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0x9287…20f17. The signed payment is good for 5 minutes.

Paid to
0x9287…20f17
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x9287e3102D411029025C7617d75245BFc7920f17",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "token": "usdc",
          "amount": "250"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "speed": "standard",
          "token": "usdc",
          "failed": [],
          "ranked": [
            {
              "chain": "base",
              "costUsd": 0.000938,
              "feePctOfAmount": 0.000375
            },
            {
              "chain": "ethereum",
              "costUsd": 0.00753,
              "feePctOfAmount": 0.00301
            }
          ],
          "amountUsd": 250,
          "recommendation": {
            "name": "Base",
            "chain": "base",
            "reason": "cheapest standard ERC-20 transfer among 6 chain(s) right now",
            "costUsd": 0.000938,
            "feeToken": "ETH"
          },
          "savingsVsMostExpensiveUsd": 0.00659
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [],
              "properties": {
                "speed": {
                  "type": "string",
                  "description": "slow, standard (default) or fast"
                },
                "token": {
                  "type": "string",
                  "description": "usdc (default), native, or eth (ETH chains only)"
                },
                "amount": {
                  "type": "string",
                  "description": "optional amount in USD, adds fee as % of it"
                },
                "chains": {
                  "type": "string",
                  "description": "optional comma list to restrict, e.g. base,arbitrum,polygon"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "builder-code": {
    "info": {
      "s": [
        "cdp_sdk_server"
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "a": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "App builder code"
        },
        "s": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$"
          },
          "maxItems": 11,
          "description": "Service builder codes"
        },
        "w": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "Wallet builder code"
        }
      },
      "additionalProperties": false
    }
  },
  "eip2612GasSponsoring": {},
  "erc20ApprovalGasSponsoring": {}
}

Provenance

Seen in the source catalog
2026-11-03 08:14Z
Last indexed by Roundhouse
2026-11-09 10:50Z
Last enriched (probe, favicon, geo)
2026-11-06 10:15Z
x402 version
2
Max timeout
300s
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. 5 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 Genexxis Gas 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=Genexxis%20Gas'
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://gas.genexxis.com/cheapest, 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.