Roundhouse AI

Quack AI

Agent Trust Check for 0xe3eaff1266e3c3bf660b2fce7dc7bbf2eb58dc83 — ERC-8004 identity, reputation, on-chain activity

OtherLiveeip155:8453Exactvia cdp
https://q402.quackai.ai/api/x402/agent-trust/:address
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$1.44
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-24 08:44Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9bbbb98e11e7be968bf4a02701c6e29fffd51d6b

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: pay 0.02 USDC on Base via x402, then resend with a PAYMENT-SIGNATURE header",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x9bbbb98e11e7be968bf4a02701c6e29fffd51d6b",
      "amount": "20000",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://q402.quackai.ai/api/x402/agent-trust/:address",
      "description": "Agent Trust Check for :address — ERC-8004 identity, reputation, on-chain activity",
      "discoverable": true,
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://q402.quackai.ai/api/x402/agent-trust/:address",
    "mimeType": "application/json",
    "description": "Agent Trust Check for :address — ERC-8004 identity, reputation, on-chain activity",
    "serviceName": "Quack AI"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "description": "Query ERC-8004 identity, on-chain activity, reputation, and risk flags for an EVM agent address. The EVM address to inspect is passed as the URL path parameter :address (e.g. /api/x402/agent-trust/0xABC…)."
        },
        "price": "20000",
        "output": {
          "type": "json",
          "example": {
            "paidAt": "2026-08-19T05:00:00.000Z",
            "address": "0x70997970C51812dc3A010C7d01b50e0d17dc79C8",
            "erc8004": {
              "source": "ERC-8004 IdentityRegistry — BSC (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432) and Base queried",
              "isRegistered": false,
              "registrations": []
            },
            "receipt": "atx_a3b4c5d6e7f8a9b0c1d2e3f4",
            "priceUsdc": 0.02,
            "riskFlags": [
              {
                "flag": "no_8004_identity",
                "evidence": "ERC-8004 IdentityRegistry queried on BSC (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432) and Base — balanceOf returned 0",
                "severity": "low"
              }
            ],
            "reputation": null,
            "onChainActivity": {
              "source": "Base mainnet eth_getTransactionCount (public RPC; scan window 900 blocks ≈ 30 min)",
              "txCountBucket": "10-49",
              "recentActivityDetected": true,
              "recentActivityWindowBlocks": 900
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "title": "AgentTrustCheck",
        "$schema": "http://json-schema.org/draft-07/schema#",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "address": {
                "type": "string",
                "pattern": "^0x[0-9a-fA-F]{40}$",
                "description": "EVM address as URL path segment (e.g. /api/x402/agent-trust/0xABC…)."
              },
              "description": {
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {},
                "description": "No query parameters; the EVM address is the URL path segment.",
                "additionalProperties": false
              }
            }
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "paidAt": {
                    "type": "string",
                    "format": "date-time"
                  },
                  "address": {
                    "type": "string"
                  },
                  "erc8004": {
                    "type": "object",
                    "required": [
                      "isRegistered",
                      "registrations",
                      "source"
                    ],
                    "properties": {
                      "source": {
                        "type": "string"
                      },
                      "isRegistered": {
                        "type": "boolean"
                      },
                      "registrations": {
                        "type": "array"
                      }
                    }
                  },
                  "receipt": {
                    "type": "string",
                    "pattern": "^atx_"
                  },
                  "priceUsdc": {
                    "type": "number"
                  },
                  "riskFlags": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "flag",
                        "severity",
                        "evidence"
                      ],
                      "properties": {
                        "flag": {
                          "type": "string"
                        },
                        "evidence": {
                          "type": "string"
                        },
                        "severity": {
                          "enum": [
                            "low",
                            "medium",
                            "high"
                          ],
                          "type": "string"
                        }
                      }
                    }
                  },
                  "reputation": {
                    "oneOf": [
                      {
                        "type": "object",
                        "properties": {
                          "source": {
                            "type": "string"
                          },
                          "summaryValue": {
                            "type": "string"
                          },
                          "feedbackCount": {
                            "type": "number"
                          },
                          "valueDecimals": {
                            "type": "number"
                          }
                        }
                      },
                      {
                        "type": "null"
                      }
                    ]
                  },
                  "onChainActivity": {
                    "type": "object",
                    "required": [
                      "txCountBucket",
                      "recentActivityDetected",
                      "recentActivityWindowBlocks",
                      "source"
                    ],
                    "properties": {
                      "source": {
                        "type": "string"
                      },
                      "txCountBucket": {
                        "type": "string"
                      },
                      "recentActivityDetected": {
                        "type": "boolean"
                      },
                      "recentActivityWindowBlocks": {
                        "type": "number"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "builder-code": {
      "code": "bc_fu2v7kgf"
    }
  },
  "x402Version": 1
}

Accepts

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

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0x9bbb…51d6b. The signed payment is good for 5 minutes.

Paid to
0x9bbb…51d6b
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x9bbbb98e11e7be968bf4a02701c6e29fffd51d6b",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "discoverable": true,
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "address": "EVM wallet address (0x-prefixed, 40 hex characters)"
        },
        "description": "Query ERC-8004 identity, on-chain activity, reputation, and risk flags for an EVM agent address. The EVM address to inspect is passed as the URL path parameter :address (e.g. /api/x402/agent-trust/0xABC…)."
      },
      "price": "20000",
      "output": {
        "type": "json",
        "example": {
          "paidAt": "2026-08-19T05:00:00.000Z",
          "address": "0x70997970C51812dc3A010C7d01b50e0d17dc79C8",
          "erc8004": {
            "source": "ERC-8004 IdentityRegistry — BSC (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432) and Base queried",
            "isRegistered": false,
            "registrations": []
          },
          "receipt": "atx_a3b4c5d6e7f8a9b0c1d2e3f4",
          "priceUsdc": 0.02,
          "riskFlags": [
            {
              "flag": "no_8004_identity",
              "evidence": "ERC-8004 IdentityRegistry queried on BSC (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432) and Base — balanceOf returned 0",
              "severity": "low"
            }
          ],
          "reputation": null,
          "onChainActivity": {
            "source": "Base mainnet eth_getTransactionCount (public RPC; scan window 900 blocks ≈ 30 min)",
            "txCountBucket": "10-49",
            "recentActivityDetected": true,
            "recentActivityWindowBlocks": 900
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "title": "AgentTrustCheck",
      "$schema": "http://json-schema.org/draft-07/schema#",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "description": {
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {},
              "description": "No query parameters; the EVM address is the URL path segment.",
              "additionalProperties": false
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "paidAt": {
                  "type": "string",
                  "format": "date-time"
                },
                "address": {
                  "type": "string"
                },
                "erc8004": {
                  "type": "object",
                  "required": [
                    "isRegistered",
                    "registrations",
                    "source"
                  ],
                  "properties": {
                    "source": {
                      "type": "string"
                    },
                    "isRegistered": {
                      "type": "boolean"
                    },
                    "registrations": {
                      "type": "array"
                    }
                  }
                },
                "receipt": {
                  "type": "string",
                  "pattern": "^atx_"
                },
                "priceUsdc": {
                  "type": "number"
                },
                "riskFlags": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "flag",
                      "severity",
                      "evidence"
                    ],
                    "properties": {
                      "flag": {
                        "type": "string"
                      },
                      "evidence": {
                        "type": "string"
                      },
                      "severity": {
                        "enum": [
                          "low",
                          "medium",
                          "high"
                        ],
                        "type": "string"
                      }
                    }
                  }
                },
                "reputation": {
                  "oneOf": [
                    {
                      "type": "object",
                      "properties": {
                        "source": {
                          "type": "string"
                        },
                        "summaryValue": {
                          "type": "string"
                        },
                        "feedbackCount": {
                          "type": "number"
                        },
                        "valueDecimals": {
                          "type": "number"
                        }
                      }
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "onChainActivity": {
                  "type": "object",
                  "required": [
                    "txCountBucket",
                    "recentActivityDetected",
                    "recentActivityWindowBlocks",
                    "source"
                  ],
                  "properties": {
                    "source": {
                      "type": "string"
                    },
                    "txCountBucket": {
                      "type": "string"
                    },
                    "recentActivityDetected": {
                      "type": "boolean"
                    },
                    "recentActivityWindowBlocks": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "routeTemplate": "/api/x402/agent-trust/:address"
  },
  "builder-code": {
    "code": "bc_fu2v7kgf"
  }
}

Provenance

Seen in the source catalog
2026-08-24 08:44Z
Last indexed by Roundhouse
2026-09-23 08:40Z
Last enriched (probe, favicon, geo)
2026-09-23 18:15Z
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. 30 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 Quack AI 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=Quack%20AI'
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://q402.quackai.ai/api/x402/agent-trust/:address, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.