Human verification for AI agents — proof of humanity, sybil resistance, and 'is this walle

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xcD3273893d1c8DF15A4D6bc411aA3D25A60Fdc60",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:196",
    "payTo": "0x0FFE96d5123dc144753034F6F388aceD830e5A5f",
    "asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "check": "telegram,apple",
          "include": "verified_at,dimensions_filled",
          "match": "age:25-34,interest:travel,income:200-500+",
          "min_score": "70",
          "wallet": "0x1234567890123456789012345678901234567890"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "confidence": "high",
          "dimensionsFilled": 8,
          "isHuman": true,
          "lastVerifiedAt": "2026-03-02T09:41:00Z",
          "match": {
            "conditions": [
              {
                "key": "age",
                "pass": true,
                "value": "25-34"
              },
              {
                "key": "interest",
                "pass": true,
                "value": "travel"
              }
            ],
            "matched": true
          },
          "methodsCount": 4,
          "passes": true,
          "queriedAt": "2026-05-10T12:00:00Z",
          "sbtId": 142031,
          "score": 105,
          "scoreCeiling": 255,
          "scoreFloor": 15,
          "scoreSource": "firestore",
          "tier": "high",
          "verifications": {
            "apple": false,
            "telegram": true
          },
          "verifiedAt": "2025-09-12T03:14:22Z",
          "wallet": "0x1234567890123456789012345678901234567890"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "check": {
                  "description": "Optional CSV of specific verification methods to check (minimal-disclosure: buyer must name them; we don't enumerate). Returns `verifications: {method: bool}` for ONLY the methods asked. Valid methods: recaptcha, google, discord, line, telegram, apple, g2fa, onchain, worldid.",
                  "type": "string"
                },
                "include": {
                  "description": "Optional CSV of richer fields: `verified_at` (SBT mint timestamp, useful for sybil-pattern detection), `dimensions_filled` (count of non-zero matrix bytes, profile completeness signal).",
                  "type": "string"
                },
                "match": {
                  "description": "Optional CSV of attribute match conditions `key:value` (AND-ed). Returns pass/fail per condition + overall `matched` — NEVER the raw values (minimal disclosure). Keys: age, gender, occupation, income, social, web3, ai, risk, interest. A `+` suffix on ordered keys (age/income/web3/ai/risk) means '≥ this level'. Examples: `age:25-34`, `income:200-500+`, `social:instagram`, `interest:travel`.",
                  "type": "string"
                },
                "min_score": {
                  "description": "Optional integer 0-255. When set, response adds `passes: bool` indicating whether the wallet's humanity score meets the threshold. Reference levels: 15 = baseline (reCAPTCHA + sybil filter), 45 = + Google OAuth, 70 = + Apple ID, 105 = + 2FA, 255 = full verification stack.",
                  "pattern": "^([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$",
                  "type": "string"
                },
                "wallet": {
                  "description": "EVM address (0x-prefixed, 40 hex chars). The wallet to verify.",
                  "pattern": "^0x[a-fA-F0-9]{40}$",
                  "type": "string"
                }
              },
              "required": [
                "wallet"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://human.twin3.ai/v1/human"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://human.twin3.ai/v1/human");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://human.twin3.ai/v1/human")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header