serp402

Name: serp402
Price: 0.05 USDC

Walmart Reviews: Walmart Reviews results, returned as JSON. Structured JSON, USD 0.05 per call in USDC — no API key, no account, no subscription, no minimum. Not affiliated with, endorsed by or an official channel of any of the services the results come from. All trademarks and copyright remain the property of their respective owners.

SearchUnknowneip155:8453Exactvia cdp

https://serp402.com/api/v1/walmart-product-reviews

CommerceWalmartProductReviewsx402

Settlements · 30d

500↑ 145%

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$9.38

Verified settled volume

506 settlements proven x402 by their on-chain EIP-3009 marker.

$0.050

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

Last called 2026-10-26 15:36Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xAA1252D726567293cffE6Ca495e32c6AEcfDC56d

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.

0.05USDC≈ $0.05 USD

on Base · exact scheme

Pay 0.05 USDC on Base to 0xAA12…DC56d. The signed payment is good for 2 minutes.

Paid to: 0xAA12…DC56d
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 50000 smallest units

50000units

on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 6srFz6…DCvbK
Token contract: EPjFWd…TDt1v
Payment window: 2 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xAA1252D726567293cffE6Ca495e32c6AEcfDC56d",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
    },
    "payTo": "6srFz6v3mSUWBmz6Fx2XUaHQGHCNFJ59z85Cp9UDCvbK",
    "amount": "50000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "product_id": "138762768"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "meta": {
            "latencyMs": 1400
          },
          "endpoint": "walmart-product-reviews"
        }
      }
    },
    "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": {
              "type": "object",
              "required": [
                "product_id"
              ],
              "properties": {
                "page": {
                  "type": "string",
                  "description": "Value is used to get the reviews on a specific page. (e.g., 1 (default) is the first page of results, 2 is the 2nd page of results, 3 is the 3rd page of…"
                },
                "sort": {
                  "type": "string",
                  "description": "Parameter is used for sorting reviews. It can be set to: relevancy , helpful , submission-desc , submission-asc , rating-desc , rating-asc"
                },
                "rating": {
                  "type": "string",
                  "description": "Parameter is used for filtering reviews by rating. It can be set to: 1 : 1-star, 2 : 2-star, 3 : 3-star, 4 : 4-star, 5 : 5-star."
                },
                "product_id": {
                  "type": "string",
                  "description": "unique product identifier to get reviews of a specific product. You need to pass the us_item_id . It can be found from either Organic Results API or Product…"
                }
              },
              "additionalProperties": true
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "meta": {
                  "type": "object",
                  "description": "How long the call took."
                },
                "paid": {
                  "type": "object",
                  "description": "The settled transaction and network."
                },
                "endpoint": {
                  "type": "string",
                  "description": "Which endpoint answered."
                },
                "attribution": {
                  "type": "object",
                  "description": "Where the data comes from and what was done to it. Keep it with the results if you pass them on."
                }
              },
              "description": "Walmart Reviews results as structured JSON. The shape follows the source, so fields differ between endpoints; identifiers and routing belonging to the collection layer are stripped.",
              "additionalProperties": true
            }
          }
        }
      }
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "format": "eip712",
          "payload": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payTo": "0xAA1252D726567293cffE6Ca495e32c6AEcfDC56d",
            "amount": "50000",
            "scheme": "exact",
            "network": "eip155:8453",
            "version": 1,
            "validUntil": 1793029129,
            "resourceUrl": "https://serp402.com/api/v1/walmart-product-reviews"
          },
          "signature": "0x087415a5158652a44489fbf55827de810fb30a95308dcbc181e591426e90b87031e402e34de44a7c590e28d89ab467e3cb7e6e3eaca5bd9af5f4671797ae749c1c",
          "acceptIndex": 0
        },
        {
          "format": "eip712",
          "payload": {
            "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
            "payTo": "6srFz6v3mSUWBmz6Fx2XUaHQGHCNFJ59z85Cp9UDCvbK",
            "amount": "50000",
            "scheme": "exact",
            "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "version": 1,
            "validUntil": 1793029129,
            "resourceUrl": "https://serp402.com/api/v1/walmart-product-reviews"
          },
          "signature": "0x2fb80368f871563c15ded6e90b4f1384ed7804d4757c9c90cd445e583785592a66b58f3439e792b48d371133d3f3c59f05cca61a7a4d3fe14ae5e2129ece303b1c",
          "acceptIndex": 1
        }
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "offers"
      ],
      "properties": {
        "offers": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "format",
              "signature"
            ],
            "properties": {
              "format": {
                "type": "string"
              },
              "payload": {
                "type": "object",
                "required": [
                  "version",
                  "resourceUrl",
                  "scheme",
                  "network",
                  "asset",
                  "payTo",
                  "amount"
                ],
                "properties": {
                  "asset": {
                    "type": "string"
                  },
                  "payTo": {
                    "type": "string"
                  },
                  "amount": {
                    "type": "string"
                  },
                  "scheme": {
                    "type": "string"
                  },
                  "network": {
                    "type": "string"
                  },
                  "version": {
                    "type": "integer"
                  },
                  "validUntil": {
                    "type": "integer"
                  },
                  "resourceUrl": {
                    "type": "string"
                  }
                }
              },
              "signature": {
                "type": "string"
              },
              "acceptIndex": {
                "type": "integer"
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-10-26 15:36Z
Last indexed by Roundhouse: 2026-10-26 16:50Z
Last enriched (probe, favicon, geo): —
x402 version: 2
Max timeout: 120s
Liveness probe: Not probed

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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 serp402 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=serp402'
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://serp402.com/api/v1/walmart-product-reviews, 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.