Roundhouse

adctx

Is this x402 seller actually paid, compared with every other one? One row out of our weekly read of every seller on Base, where all of them get the SAME window, so the number means the same thing seller to seller. Give a payTo address: verdict (paid, single-payer, self-funded, dust-only, silent), payers, how many the seller itself funded, USDC in. Call counts are not payments; of 1 397 sellers read both ways, 312 are called and paid nothing.

OtherLiveeip155:8453Exactvia cdp
https://t.adctx.com/check
x402PaymentsBaseSeller-verificationWash-detection
Calls · 30d
5↑ 38%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 22 snapshots so far.
$0.60
Verified settled volume
9 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.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-10-24 01:38Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x1DDDE9026d610F7aef8e8C7b22EFE8B27EbEfC97

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.

{
  "free": {
    "top": [
      {
        "usdc": 171258.6831,
        "hosts": "api.bitrefill.com",
        "payers": 304,
        "address": "0x480cd46e6fade651a0437deadda53d5c8e7d846a",
        "resources": 8,
        "usdc_per_day": 24465.5262,
        "window_hours": 168,
        "lineage_checked": "no"
      },
      {
        "usdc": 2200.6751,
        "hosts": "www.api-xpay.com",
        "payers": 133,
        "address": "0x589a2314a2e05f45e40c4823da3ba58d421db3d8",
        "resources": 14,
        "usdc_per_day": 314.3822,
        "window_hours": 168,
        "lineage_checked": "no"
      },
      {
        "usdc": 1994.36,
        "hosts": "ax1-new.vercel.app www.ax1.vc",
        "payers": 448,
        "address": "0x7284d41b5b852f2bd4c99bdf95043d84452d299c",
        "resources": 2,
        "usdc_per_day": 284.9086,
        "window_hours": 168,
        "lineage_checked": "no"
      }
    ],
    "paid": 411,
    "excluded": [],
    "measured": 1476,
    "verdicts": {
      "paid": 411,
      "silent": 357,
      "self-funded": 14,
      "single-payer": 694
    },
    "above_usdc": {
      "1": 65,
      "10": 24,
      "100": 9,
      "1000": 3
    },
    "population": null,
    "rate_basis": "lineage-checked paid sellers only; usdc / window_hours * 24",
    "revenue_usdc": 177703.2617,
    "window_hours": 168,
    "concentration": {
      "top1": 0.9637,
      "top3": 0.9873,
      "top10": 0.9969
    },
    "windows_equal": true,
    "median_paid_usdc": 0.095,
    "lineage_checked_paid": 378,
    "p90_paid_usdc_per_day": 0.1614,
    "median_paid_usdc_per_day": 0.0114,
    "checked_paid_share_of_measured": 0.2561,
    "checked_paid_share_of_population": null
  },
  "hint": "add address=0x… , the seller's payTo address",
  "error": "PAYMENT-SIGNATURE header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1DDDE9026d610F7aef8e8C7b22EFE8B27EbEfC97",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://t.adctx.com/check",
      "description": "Is this x402 seller actually paid? Give a payTo address, get its verdict from our own read of Base: paid, single-payer, self-funded, dust-only or silent, with the number of payers, how many of them the seller itself funded, and the USDC that arrived in a fixed window every seller is measured over. The catalogue's own call counts are not payments: across 1 397 sellers we read both ways, 312 are called and receive nothing on chain.",
      "maxAmountRequired": "50000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://t.adctx.com/check",
    "tags": [
      "x402",
      "payments",
      "base",
      "seller-verification",
      "wash-detection"
    ],
    "mimeType": "application/json",
    "description": "Is this x402 seller actually paid? Give a payTo address, get its verdict from our own read of Base: paid, single-payer, self-funded, dust-only or silent, with the number of payers, how many of them the seller itself funded, and the USDC that arrived in a fixed window every seller is measured over. The catalogue's own call counts are not payments: across 1 397 sellers we read both ways, 312 are called and receive nothing on chain.",
    "serviceName": "adctx"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "address": "0x8bc2aecdd86097f74a1a5fa17764108d9a683c8c"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "usdc": "52.88",
            "method": "https://adctx.com/posts/what-an-agent-purchase-costs/",
            "payers": "6",
            "address": "0x8bc2aecdd86097f74a1a5fa17764108d9a683c8c",
            "verdict": "single-payer",
            "window_hours": "168.0",
            "lineage_checked": "yes",
            "self_funded_payers": "2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$",
                    "description": "the seller's payTo address"
                  }
                },
                "additionalProperties": false
              }
            },
            "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.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0x1DDD…EfC97. The signed payment is good for 5 minutes.

Paid to
0x1DDD…EfC97
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
Buys
Is this x402 seller actually paid, compared with every other one? One row out of our weekly read of every seller on Base, where all of them get the SAME window, so the number means the same thing seller to seller. Give a payTo address: verdict (paid, single-payer, self-funded, dust-only, silent), payers, how many the seller itself funded, USDC in. Call counts are not payments; of 1 397 sellers read both ways, 312 are called and paid nothing.
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1DDDE9026d610F7aef8e8C7b22EFE8B27EbEfC97",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://t.adctx.com/check",
    "description": "Is this x402 seller actually paid, compared with every other one? One row out of our weekly read of every seller on Base, where all of them get the SAME window, so the number means the same thing seller to seller. Give a payTo address: verdict (paid, single-payer, self-funded, dust-only, silent), payers, how many the seller itself funded, USDC in. Call counts are not payments; of 1 397 sellers read both ways, 312 are called and paid nothing.",
    "maxAmountRequired": "50000",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "address": "0x8bc2aecdd86097f74a1a5fa17764108d9a683c8c"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "usdc": "52.88",
          "method": "https://adctx.com/posts/what-an-agent-purchase-costs/",
          "payers": "6",
          "address": "0x8bc2aecdd86097f74a1a5fa17764108d9a683c8c",
          "verdict": "single-payer",
          "window_hours": "168.0",
          "lineage_checked": "yes",
          "self_funded_payers": "2"
        },
        "required": [
          "ok",
          "address",
          "verdict"
        ]
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "address"
              ],
              "properties": {
                "address": {
                  "type": "string",
                  "pattern": "^0x[a-fA-F0-9]{40}$",
                  "description": "the seller's payTo address"
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            },
            "required": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-24 01:38Z
Last indexed by Roundhouse
2026-10-26 14:50Z
Last enriched (probe, favicon, geo)
2026-10-10 10:46Z
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. 22 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 adctx 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=adctx'
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://t.adctx.com/check, 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.