Wheeler Hubbell Publishing - Standing

Endpoints and prices

Payment evidence

402 payload captured at 2026-11-11 20:13:00 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "paymentFlow": "authorization",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x1050eddd8282623b0c263ed6bdbd42370bbc28d3",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://api.wheelerhubbellpublishing.com/v1/evaluate",
      "description": "WHP Standing front-door evaluation (ordinary x402 agents)",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.wheelerhubbellpublishing.com/v1/evaluate",
    "mimeType": "application/json",
    "description": "WHP Standing front-door evaluation (ordinary x402 agents)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "claim": "Invoice #1042 was approved by the finance lead",
            "subject": "Acme Corp invoice #1042",
            "provenance": {
              "source": "https://example.com/records/1042",
              "evidence": [
                "https://example.com/records/1042/approval"
              ],
              "authority": "Finance lead, Acme Corp"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "payload": {
              "door": "/v1/evaluate",
              "issuer": "Wheeler Hubbell Publishing",
              "mark_id": "WHP-SM-4f8a9b2c...",
              "outcome": "ESTABLISHED",
              "environment": "LIVE",
              "object_binding": {
                "outcome": "ESTABLISHED",
                "examination_scope": "wheeler-hubbell-publishing:whp-sovereign-standing",
                "examined_question": "Invoice #1042 was approved by the finance lead",
                "finding_disposition": "POSITIVE_STANDING_MARK",
                "requested_operation": "INFORM",
                "governing_canon_sha256": "bd85f51f05afc6f77053aec086a1d013a1cccde70c30231622f0ecc7e3f25c21",
                "submitted_bytes_sha256": "sha256-hex",
                "governing_canon_version": "7.0.0"
              },
              "integration_rule": "A positive Standing Mark is a signed, scope-bound examination result. It may satisfy an evidence requirement defined by a receiving system, but it does not itself authorize an action. The receiving system must independently evaluate the applicable authority, conditions, and action policy. Absence of a positive Mark means the Mark requirement has not been satisfied; it does not, by itself, establish that the underlying action is prohibited.",
              "finding_disposition": "POSITIVE_STANDING_MARK"
            },
            "protected": {
              "type": "WHP-STANDING-MARK-v1",
              "key_id": "sha256-spki-der-hex",
              "algorithm": "Ed25519",
              "canonicalization": "WHP-JCS-I1"
            },
            "signature": "base64-ed25519-signature"
          },
          "possible_outcomes": {
            "positive_mark": "POSITIVE_STANDING_MARK (outcome: ESTABLISHED)",
            "negative_finding": "NEGATIVE_STANDING_FINDING (outcome: NOT_ESTABLISHED)"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "subject",
                  "claim"
                ],
                "properties": {
                  "claim": {
                    "type": "string",
                    "maxLength": 4000,
                    "minLength": 1
                  },
                  "subject": {
                    "type": "string",
                    "maxLength": 2000,
                    "minLength": 1
                  },
                  "provenance": {
                    "type": "object",
                    "properties": {
                      "source": {
                        "type": "string"
                      },
                      "evidence": {
                        "type": "array",
                        "items": {}
                      },
                      "authority": {
                        "type": "string"
                      }
                    }
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "protected",
                  "payload",
                  "signature"
                ],
                "properties": {
                  "payload": {
                    "type": "object"
                  },
                  "protected": {
                    "type": "object"
                  },
                  "signature": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2,
  "repair_instructions": {
    "action": "Sign the payment authorization for 1 USDC on Base (network eip155:8453) to 0x1050eddd8282623b0c263ed6bdbd42370bbc28d3 and attach in payment-signature or x-payment header.",
    "recovery": {
      "sdk": "Use FileReplayStore across restarts; default memory store is process-local.",
      "action": "Retrieve by mark ID. If delivery is pending, explicitly resubmit the same authorization and exact request. Never mint a second nonce merely because transport failed.",
      "transport_failure": "OUTCOME_UNKNOWN, not unpaid or safe to pay again",
      "persist_before_send": [
        "exact input bytes",
        "exact payment envelope",
        "nonce",
        "destination"
      ]
    },
    "retryable": true,
    "accepted_formats": [
      "raw JSON string",
      "standard Base64 JSON",
      "Base64URL JSON"
    ],
    "accepted_headers": [
      "payment-signature",
      "x-payment"
    ],
    "envelope_requirements": {
      "payload": {
        "signature": "0x-prefixed 65-byte EIP-3009 signature supplied by caller signer",
        "authorization": [
          "from",
          "to",
          "value",
          "validAfter",
          "validBefore",
          "nonce"
        ]
      },
      "accepted": "Echo the complete selected accepts entry, including maxTimeoutSeconds and extra.",
      "resource": "Echo challenge resource when supplied.",
      "x402Version": 2,
      "top_level_scheme_network": false
    }
  }
}