addrbookFor publishers
← The evidence ledger

Evidence row 121925

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://stall-row-production.up.railway.app/v1/card-smith
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
f314fb2a98493e4d5784430fd49ecf23e3fa4b0ffb5b33c0961a7a2dcde83fcc
Leaf
0xc66bce6ee8822ba31c82d8ddbd953e1204b0740e862f3d5c0fcd62c64b494ab2

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://stall-row-production.up.railway.app/v1/card-smith"
    ]
  ],
  "name": "stall-row",
  "owner_address": "0x097f9685d1e0752bf8b02d61e5ce9be7ea0fba7f",
  "raw": {
    "accepts": [
      {
        "amount": "100000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F",
        "scheme": "exact"
      }
    ],
    "description": "Generate or grade an agent card (the /.well-known/agent-card.json an agent publishes for A2A and AgentWorld-style registries). Generate builds a structurally valid card from your fields; grade scores a supplied card and itemizes its defects. Use this when you are registering an agent and want the card right the first time.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "description": "Research agent",
              "mode": "generate",
              "name": "Ren",
              "skills": [
                "research"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "card": {
                "description": "Research agent",
                "name": "Ren",
                "skills": [],
                "url": "",
                "version": "1.0.0"
              },
              "mode": "generate",
              "validation": {
                "defects": [
                  {
                    "detail": "Top-level 'url' is absent or empty.",
                    "name": "missing url",
                    "severity": "major"
                  }
                ],
                "score": 55,
                "valid_structure": false
              }
            },
            "schema": {
              "properties": {
                "card": {
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "mode": {
                  "type": "string"
                },
                "validation": {
                  "properties": {
                    "defects": {
                      "items": {
                        "properties": {
                          "detail": {
                            "type": "string"
                          },
                          "name": {
                            "type": "string"
                          },
                          "severity": {
                            "type": "string"
                          }
                        },
                        "required": [
                          "name",
                          "severity",
                          "detail"
                        ],
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "score": {
                      "type": "integer"
                    },
                    "valid_structure": {
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "valid_structure",
                    "score",
                    "defects"
                  ],
                  "type": "object"
                }
              },
              "required": [
                "mode",
                "validation"
              ],
              "type": "object"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "card": {
                      "type": "object"
                    },
                    "description": {
                      "type": "string"
                    },
                    "mode": {
                      "enum": [
                        "generate",
                        "grade"
                      ],
                      "type": "string"
                    },
                    "name": {
                      "type": "string"
                    },
                    "skills": {
                      "type": "array"
                    }
                  },
                  "required": [
                    "mode"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "card": {
                      "type": [
                        "object",
                        "null"
                      ]
                    },
                    "mode": {
                      "type": "string"
                    },
                    "validation": {
                      "properties": {
                        "defects": {
                          "items": {
                            "properties": {
                              "detail": {
                                "type": "string"
                              },
                              "name": {
                                "type": "string"
                              },
                              "severity": {
                                "type": "string"
                              }
                            },
                            "required": [
                              "name",
                              "severity",
                              "detail"
                            ],
                            "type": "object"
                          },
                          "type": "array"
                        },
                        "score": {
                          "type": "integer"
                        },
                        "valid_structure": {
                          "type": "boolean"
                        }
                      },
                      "required": [
                        "valid_structure",
                        "score",
                        "defects"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "mode",
                    "validation"
                  ],
                  "type": "object"
                },
                "schema": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T21:04:16.676Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T21:04:16.512Z"
    },
    "resource": "https://stall-row-production.up.railway.app/v1/card-smith",
    "serviceName": "stall-row",
    "tags": [
      "agents",
      "a2a",
      "agent-card",
      "identity",
      "sellers"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Generate or grade an agent card (the /.well-known/agent-card.json an agent publishes for A2A and AgentWorld-style registries). Generate builds a structurally valid card from your fields; grade scores a supplied card and itemizes its defects. Use this when you are registering an agent and want the card right the first time."
}

What the leaf hashes

{"body":"f314fb2a98493e4d5784430fd49ecf23e3fa4b0ffb5b33c0961a7a2dcde83fcc","id":121925,"kind":"listing","method":"baseline/1","observed_us":1793025620676103,"prev":null,"subject":"x402_bazaar:https://stall-row-production.up.railway.app/v1/card-smith","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0xc66be0f4c88c357d53190ea7394c17958059529d148c38c65a4569807b09d3ed
  2. 0x0c8a5ee1fc23d883c3724c613ed4fd65d6db402922582666ef14c40c0b58009f
  3. 0x807c91adb23b35474a340c3066641c899e58e65a98077047af46f8b4fed89033
  4. 0x24faa4ac63195f4f30537c7de5afd31a930a008d133f7879d0d91903fc7497a6
  5. 0xe42bc6f6f1006e233a24624fb1d0de7b701a60d624af380a8ecef4f7b0f0982f
  6. 0x94ea2c172646180bca52c2f1740192c9b1754bc7241fbf0b3f95bdac05b108f6
  7. 0xe6b7f8cf9ba0ae802a2bad8c6cddef37bf8e239a03c058f8a7b831d8d69f8b09
  8. 0xe85ed350c0053b4ff5a58d369a878819589de5b1648588d8165b75830f030c06
  9. 0x1b9dbe5112588a7f2b1b0ed2aa9b71047b77a5b91bfb1e88df305d0873594c3c
  10. 0xa5d93de518cc5a3e0fcb59e9d61337c743409d708b23c5352bebbbec973ca249
  11. 0xcf79908a8c2a5f4d274583b3f75e7aa2d8b29ffc384541425852fe761ae31d56
  12. 0x9d99c5dad23613921cdfabc849c2dd3c97729992eaa05c4dab5e86e83ed6d220
  13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
  14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
  15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
  16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON