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mirrored listing x402 eip155:8453eip155:137algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=

Second Opinion quick: an independent reasoning-only check (no web research) of your claim'

Second Opinion quick: an independent reasoning-only check (no web research) of your claim's logic and consistency with established knowledge. Honest 'inconclusive' when the claim needs live research.

Do you run secondopinionx402.com? This listing was mirrored from Coinbase's public Bazaar. Claim it in 30 seconds — no account required — and it becomes verified, permanently overriding the mirrored copy.

Claim this listing
20000 (raw units)
price
13
calls / 30d
2
unique payers
2026-08-24
updated

Provider

secondopinionx402.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xa12d480B17797f2401949130bEcBeC24c754ed30",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xa12d480B17797f2401949130bEcBeC24c754ed30",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "20000",
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
    "payTo": "X4BGQO53SBYIPXGE22E3C4BXJZKYKUYG3PZQVDBNUIVB64D6K7MEVGGCSM",
    "asset": "31566704",
    "amount": "20000",
    "maxTimeoutSeconds": 60
  }
]

Output schema

{
  "bazaar": {
    "category": "api",
    "discoverable": true,
    "info": {
      "input": {
        "body": {
          "properties": {
            "claim": {
              "maxLength": 2000,
              "minLength": 8,
              "type": "string"
            },
            "claimed_sources": {
              "items": {
                "type": "string"
              },
              "maxItems": 5,
              "type": "array"
            },
            "context": {
              "maxLength": 4000,
              "type": "string"
            }
          },
          "required": [
            "claim"
          ],
          "type": "object"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "confidence": 0.9,
          "searched_web": false,
          "summary": "The conclusion does not follow…",
          "verdict": "refuted"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {}
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "bodyType",
            "body",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    },
    "tags": [
      "verification",
      "fact-check",
      "claims",
      "adversarial",
      "trust",
      "citations",
      "research",
      "verdict",
      "receipts",
      "second-opinion",
      "hallucination",
      "guardrails",
      "ai-agents",
      "x402"
    ]
  }
}

Use it

curl

curl "https://secondopinionx402.com/v1/verify/quick"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://secondopinionx402.com/v1/verify/quick");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://secondopinionx402.com/v1/verify/quick")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/9056.json, and this resource appears in /discovery/resources and /discovery/search.