Roundhouse

x402 Preflight

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TradingLiveeip155:8453Exactvia facilitator:payAI
https://x402-preflight-grokbot.netlify.app/api/preflight
x402TrustPre-paymentAgentsSafety
Settlements · 30d
6
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.04
Verified settled volume
6 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
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
0x6573467528C349Fa9b2AFA6993116fC7bE1D10c1

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.

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x6573…D10c1. The signed payment is good for 2 minutes.

Paid to
0x6573…D10c1
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6573467528C349Fa9b2AFA6993116fC7bE1D10c1",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://gas.apitoll.cloud/v1/base/gas?blocks=20",
          "method": "GET",
          "max_usd": "0.05"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "bazaar": {
            "listed": true,
            "checked": true
          },
          "method": "GET",
          "offers": [
            {
              "flags": [],
              "payTo": "0xcc69d619E6053F88A4845066518f465bD06Fc96c",
              "scheme": "exact",
              "network": "eip155:8453",
              "priceUsd": 0.001,
              "amountAtomic": "1000",
              "networkLabel": "USDC on Base",
              "assetIsCanonicalUsdc": true
            }
          ],
          "target": "https://gas.apitoll.cloud/v1/base/gas?blocks=20",
          "reasons": [],
          "verdict": "pay",
          "warnings": [],
          "latencyMs": 180,
          "httpStatus": 402,
          "x402Version": 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": [
                "url"
              ],
              "properties": {
                "url": {
                  "type": "string",
                  "description": "Absolute https URL of the x402 endpoint to inspect (include its query string)"
                },
                "method": {
                  "enum": [
                    "GET",
                    "POST"
                  ],
                  "type": "string",
                  "description": "HTTP method the target expects. Default GET"
                },
                "max_usd": {
                  "type": "string",
                  "description": "Optional. Your price ceiling in USD; offers above it are flagged"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "bazaar": {
                  "type": "object"
                },
                "offers": {
                  "type": "array"
                },
                "reasons": {
                  "type": "array"
                },
                "verdict": {
                  "enum": [
                    "pay",
                    "caution",
                    "do_not_pay",
                    "not_x402"
                  ],
                  "type": "string"
                },
                "warnings": {
                  "type": "array"
                },
                "latencyMs": {
                  "type": "integer"
                },
                "httpStatus": {
                  "type": "integer"
                },
                "recommendedOffer": {
                  "type": [
                    "object",
                    "null"
                  ]
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-21 14:36Z
Last indexed by Roundhouse
2026-10-26 13:16Z
Last enriched (probe, favicon, geo)
2026-10-21 05:45Z
x402 version
2
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

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 x402 Preflight 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=x402%20Preflight'
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://x402-preflight-grokbot.netlify.app/api/preflight, 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.