Roundhouse AI

BuyWith402

BuyWith402 (buywith402.com): buy any product from the catalog with one x402 USDC payment and get an order id with queued fulfillment. Prices are all-inclusive (US shipping and tax included). Browse products free at GET /products (?query=<text> to search); check status at GET /orders/{order_id}. Missing merchandise? POST /merchants with any store URL ($5.00 x402) onboards its catalog within minutes.

SearchLiveeip155:8453Exactvia cdp
https://www.buywith402.com/products/:id/purchase
CommerceShoppingPhysicalHardwareMarketplace
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$222.96
Verified settled volume
34 settlements proven x402 by their on-chain EIP-3009 marker.
$19.86
Listed price
As published in the catalog. Always read the live 402 before paying.
28
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-07-13 02:02Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xF5083343b3fF8d210Fc35fF17dB68EeDbAcB17c4

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.

Accepts

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

19.86USDC≈ $19.86 USD
on Base · exact scheme

Pay 19.86 USDC on Base to 0xF508…B17c4. The signed payment is good for 5 minutes.

Paid to
0xF508…B17c4
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
19860000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xF5083343b3fF8d210Fc35fF17dB68EeDbAcB17c4",
    "amount": "19860000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "quantity": 1,
          "shipping": {
            "zip": "94114",
            "city": "San Francisco",
            "name": "Jane Doe",
            "state": "CA",
            "country": "US",
            "address_1": "123 Main St"
          }
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "pathParams": {
          "id": "mcmaster:92224A112"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "status": "queued",
          "message": "Payment received. Fulfillment queued.",
          "order_id": "5461d889-dac7-456b-846f-3332a2929104",
          "quantity": 1,
          "product_id": "example-product-id"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "shipping"
              ],
              "properties": {
                "email": {
                  "type": "string"
                },
                "quantity": {
                  "type": "integer",
                  "maximum": 12,
                  "minimum": 1
                },
                "shipping": {
                  "type": "object",
                  "required": [
                    "name",
                    "address_1",
                    "city",
                    "state",
                    "zip"
                  ],
                  "properties": {
                    "zip": {
                      "type": "string"
                    },
                    "city": {
                      "type": "string"
                    },
                    "name": {
                      "type": "string"
                    },
                    "state": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string"
                    },
                    "address_1": {
                      "type": "string"
                    },
                    "address_2": {
                      "type": "string"
                    }
                  }
                },
                "gift_note": {
                  "type": "string"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": "/products/:id/purchase"
  }
}

Provenance

Seen in the source catalog
2026-07-13 02:02Z
Last indexed by Roundhouse
2026-08-04 03:20Z
Last enriched (probe, favicon, geo)
2026-09-20 19:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 403
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 BuyWith402 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=BuyWith402'
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://www.buywith402.com/products/:id/purchase, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

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