Roundhouse

agent.zbang.net

Contract Powers: for one address on Base/Polygon/Ethereum — verification, proxy pattern and implementation, who the admi

InfraLiveeip155:8453Exactvia facilitator:payAI
https://agent.zbang.net/api/paid/contract
Settlements · 30d
1
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.10
Verified settled volume
2 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
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA844554E3429c85DE29Dcc644bFe98D83A7D777f

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: send the signed payload in the PAYMENT-SIGNATURE header (x402 v2) or the X-PAYMENT header (x402 v1)",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xA844554E3429c85DE29Dcc644bFe98D83A7D777f",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://agent.zbang.net/api/paid/contract",
      "description": "Contract Powers: for one address on Base/Polygon/Ethereum",
      "outputSchema": null,
      "maxAmountRequired": "50000",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xA844554E3429c85DE29Dcc644bFe98D83A7D777f",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:137",
      "mimeType": "application/json",
      "resource": "https://agent.zbang.net/api/paid/contract",
      "description": "Contract Powers: for one address on Base/Polygon/Ethereum",
      "outputSchema": null,
      "maxAmountRequired": "50000",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xA844554E3429c85DE29Dcc644bFe98D83A7D777f",
      "amount": "50000",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://agent.zbang.net/api/paid/contract",
      "description": "Contract Powers: for one address on Base/Polygon/Ethereum",
      "outputSchema": null,
      "maxAmountRequired": "50000",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xA844554E3429c85DE29Dcc644bFe98D83A7D777f",
      "amount": "50000",
      "scheme": "exact",
      "network": "polygon",
      "mimeType": "application/json",
      "resource": "https://agent.zbang.net/api/paid/contract",
      "description": "Contract Powers: for one address on Base/Polygon/Ethereum",
      "outputSchema": null,
      "maxAmountRequired": "50000",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://agent.zbang.net/api/paid/contract",
    "mimeType": "application/json",
    "description": "Contract Powers: for one address on Base/Polygon/Ethereum — verification, proxy pattern and implementation, who the admin is and whether it is a plain EOA, retained privileged powers (upgrade/mint/pause/blacklist/fees/sweep) with per-item evidence, bytecode flags, and live bug-bounty coverage from a 238-program corpus. Plus a coverage section that names, with signature and modifier, every owner-only function the categoriser did NOT recognise — read from the verified source, so the power list has a stated edge instead of a silent one. Works on unverified contracts via 4-byte selector scan."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "chain": "base",
            "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "name": "FiatTokenProxy",
            "admin": {
              "ownerType": "EOA",
              "isContract": false
            },
            "chain": "base",
            "proxy": {
              "isProxy": true,
              "pattern": "zeppelinos.implementation"
            },
            "powers": [
              {
                "power": "upgrade",
                "confidence": "declared"
              }
            ],
            "product": "contract-powers",
            "summary": "upgradeable proxy; admin key is a plain EOA; retained powers: blacklist, mint, ownership, pause, sweep, upgrade",
            "verified": true
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "chain": {
                    "enum": [
                      "base",
                      "polygon",
                      "ethereum"
                    ],
                    "type": "string"
                  },
                  "address": {
                    "type": "string",
                    "pattern": "^0x[0-9a-fA-F]{40}$"
                  }
                }
              }
            },
            "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 0xA844…D777f. The signed payment is good for 2 minutes.

Paid to
0xA844…D777f
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xA844554E3429c85DE29Dcc644bFe98D83A7D777f",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "chain": "base",
          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "name": "FiatTokenProxy",
          "admin": {
            "ownerType": "EOA",
            "isContract": false
          },
          "chain": "base",
          "proxy": {
            "isProxy": true,
            "pattern": "zeppelinos.implementation"
          },
          "powers": [
            {
              "power": "upgrade",
              "confidence": "declared"
            }
          ],
          "product": "contract-powers",
          "summary": "upgradeable proxy; admin key is a plain EOA; retained powers: blacklist, mint, ownership, pause, sweep, upgrade",
          "verified": true
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "address"
              ],
              "properties": {
                "chain": {
                  "enum": [
                    "base",
                    "polygon",
                    "ethereum"
                  ],
                  "type": "string"
                },
                "address": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{40}$"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-21 06:19Z
Last indexed by Roundhouse
2026-10-26 13:16Z
Last enriched (probe, favicon, geo)
2026-10-21 17:16Z
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 agent.zbang.net 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=agent.zbang.net'
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://agent.zbang.net/api/paid/contract, 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.