Roundhouse

kr-x402-mvp.kgy5612.workers.dev

No description published for this endpoint.

DataLiveeip155:8453Exactvia facilitator:thirdweb
https://kr-x402-mvp.kgy5612.workers.dev/v1/portfolio
Settlements · 30d
162↓ 73%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.46
Verified settled volume
161 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
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
0xe4be4d0bd82d8e68203deff81f79ede0529f2617

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.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 900
    }
  ],
  "catalog": "https://kr-x402-mvp.kgy5612.workers.dev/catalog",
  "openapi": "https://kr-x402-mvp.kgy5612.workers.dev/openapi.json",
  "resource": {
    "url": "https://kr-x402-mvp.kgy5612.workers.dev/v1/portfolio",
    "tags": [
      "wallet",
      "wallet-quick",
      "payee-check",
      "balance",
      "usdc",
      "eth",
      "gas",
      "onchain",
      "x402",
      "agent",
      "crypto",
      "base"
    ],
    "mimeType": "application/json",
    "description": "One-call Base wallet quick check (agent self-check or counterparty/payee check before you pay): native ETH + nonce + USDC balance + live gas cost of an ERC-20 transfer, and can_pay_gas / can_pay_x402 booleans. Cheaper than eth-balance + erc20-balance + base-gas separately ($0.006). wallet=0x..",
    "serviceName": "Crypto Microdata for Agents"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "wallet": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "eth": 0,
            "usdc": 0.079,
            "chain": "base",
            "nonce": 0,
            "wallet": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
            "can_pay_gas": false,
            "can_pay_x402": true,
            "gas_cost_erc20_transfer_eth": 4e-7
          }
        }
      },
      "schema": {
        "type": "object",
        "$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": [
                  "wallet"
                ],
                "properties": {
                  "wallet": {
                    "type": "string",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "examples": [
                      "0xe4be4d0bd82d8e68203deff81f79ede0529f2617"
                    ],
                    "description": "Wallet"
                  }
                },
                "additionalProperties": false
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "how_to_pay": "Sign the accepts[0] USDC EIP-3009 authorization on Base and retry this exact URL with header PAYMENT-SIGNATURE (x402 v2). Same terms are in the PAYMENT-REQUIRED header. Failed calls (4xx/5xx) are never charged.",
  "price_usdc": "0.003000",
  "free_sample": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/wallet-snapshot?sample=1",
  "x402Version": 2,
  "input_schema": {
    "type": "object",
    "required": [
      "wallet"
    ],
    "properties": {
      "wallet": {
        "type": "string",
        "pattern": "^0x[0-9a-fA-F]{40}$",
        "examples": [
          "0xe4be4d0bd82d8e68203deff81f79ede0529f2617"
        ],
        "description": "Wallet"
      }
    },
    "additionalProperties": false
  },
  "cheapest_first_call": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping ($0.001)"
}

Accepts

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

0.003USDC≈ $0.003 USD
on Base · exact scheme

Pay 0.003 USDC on Base to 0xe4be…f2617. The signed payment is good for 15 minutes.

Paid to
0xe4be…f2617
USD Coin contract
0x8335…02913
Payment window
15 minutes
As published
3000 smallest units
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://kr-x402-mvp.kgy5612.workers.dev/v1/portfolio",
    "description": "",
    "maxAmountRequired": "3000",
    "maxTimeoutSeconds": 900
  }
]

Provenance

Seen in the source catalog
2026-10-31 06:23Z
Last indexed by Roundhouse
2026-11-01 00:15Z
Last enriched (probe, favicon, geo)
2026-11-07 16:45Z
x402 version
1
Max timeout
900s
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 kr-x402-mvp.kgy5612.workers.dev 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=kr-x402-mvp.kgy5612.workers.dev'
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://kr-x402-mvp.kgy5612.workers.dev/v1/portfolio, 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.