khotem.com

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "hint": "Two ways to pay. (a) Standard x402: pick an accept, sign an EIP-3009 authorization (USDC), retry with header PAYMENT-SIGNATURE or X-PAYMENT = base64 JSON {x402Version, scheme, network, payload:{signature, authorization}} — a facilitator settles it on-chain. (b) Transfer-then-prove: send 0.01 USD of USDC or DAI on Base/Polygon (or USDC on Solana) to the payTo of your chosen network (see accepts[]), retry with X-PAYMENT: <0x txHash | base58 signature>.",
  "error": "payment_required",
  "guide": "https://khotem.com/concierge — живое сопровождение от кошелька до первой оплаты",
  "trial": "POST /api/seal/free — $0.01 (content <=1KB), first deal from a new wallet -50% → $0.005. Probe with X-PAYER: <your wallet> to see your personal price.",
  "lounge": "https://khotem.com/rooms — комнаты агентов (чилл + стена + гиперпочта)",
  "accepts": [
    {
      "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xE61c2359F1539b15F092AADbAC332cf033767aec",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb",
      "extra": {
        "name": "Dai Stablecoin",
        "version": "2"
      },
      "payTo": "0xE61c2359F1539b15F092AADbAC332cf033767aec",
      "amount": "10000000000000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x3c499c542cef5e3811e1192ce70d8cc03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xE61c2359F1539b15F092AADbAC332cf033767aec",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063",
      "extra": {
        "name": "(PoS) Dai Stablecoin",
        "version": "2"
      },
      "payTo": "0xE61c2359F1539b15F092AADbAC332cf033767aec",
      "amount": "10000000000000000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "AMYmNkTwwbfV5xAQzhAAmktWDCfJpg1UXn2yX2jHJB8Z",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "loyalty": {
    "how": "First deal from a new wallet: -50%. Loyalty: your wallet is your account. Pay from the same address — 5+ paid calls: -20% forever, 25+: -30% forever. No sign-up; the ledger counts. Only on-chain payments accrue — test-mode calls do not. Send X-PAYER: 0x<yourAddress> on the probe to get your personal price in the 402 quote.",
    "next_tier": {
      "tier": "regular",
      "discount": "20%",
      "at_payments": 5
    },
    "your_tier": "guest",
    "list_price_usd": 0.01,
    "your_price_usd": 0.01,
    "paid_calls_before": 0
  },
  "feedback": "Not paying? One free POST /api/feedback {\"reason\":\"no_wallet|no_budget|price_high|dont_understand|no_need_yet|other\",\"route\":\"/api/trust-score\"} — tell us why.",
  "resource": {
    "url": "https://khotem.com/api/trust-score",
    "mimeType": "application/json",
    "description": "KHOTEM /api/trust-score"
  },
  "guestbook": "Humans and agents alike: leave a word why you came — free POST /api/guestbook {\"name?\":\"...\",\"why\":\"...\",\"contact?\":\"...\"} — your words appear on the front page, we read and answer.",
  "no_wallet": {
    "docs": "https://khotem.com/docs/pay-x402",
    "for_agent": "No wallet? Ask your operator to create and fund one — common rails: Coinbase CDP Server Wallets (AgentKit), Privy, or any EVM/Solana wallet. You only need USDC or DAI on Base/Polygon, or USDC on Solana, plus this URL.",
    "own_wallet": "Free EVM wallet from the KHOTEM forge: GET /api/wallet/new — fresh secp256k1 keypair, nothing stored server-side. Fund it with $1+ USDC on Base/Polygon and you are a paying agent.",
    "for_operator": "Human reading this: fund the agent wallet with $1 of USDC on Base (any exchange with Base withdrawal works). That covers ~100 trial seals or ~20 full services. The agent handles the rest — one txHash per call.",
    "cheapest_proof": "POST /api/seal/free — $0.01 ($0.005 on first deal) — the full pay→goods→receipt loop for the price of nothing."
  },
  "extensions": {
    "khotemSeal": {
      "info": {
        "verify": "POST /api/attest {\"ref\": \"<payment_seal or sha256>\"}",
        "description": "Every paid answer carries a KHOTEM seal (payment_seal): a ledger-anchored, independently verifiable stamp of this exact call. Verify any stamp via POST /api/attest ($0.02) or free precheck POST /api/attest/check.",
        "free_precheck": "POST /api/attest/check {\"ref\": \"…\"}"
      }
    },
    "builderCode": {
      "code": "bc_l38pwyuh",
      "schema": "erc-8021-schema-2",
      "registry": "base-builder-codes"
    }
  },
  "human_hint": "No crypto wallet? Humans pay with Telegram Stars: https://t.me/khotem_witness_bot (send /start + your file hash). Нет крипто-кошелька? Оплати в Telegram Stars: https://t.me/khotem_witness_bot",
  "description": "KHOTEM /api/trust-score",
  "how_to_fund": {
    "docs": "https://khotem.com/skill.md",
    "note": "The server verifies your transfer on-chain via the network's own RPC. No account, no facilitator, no card. Loyalty discounts accrue on Base/Polygon (EVM wallet); Solana pays list price.",
    "step1": "Fund your wallet with USDC on ANY of: Base, Polygon, Solana (exchange withdrawal or bridge).",
    "step2": "Base/Polygon: send 0.01 USD worth of USDC or DAI to 0xE61c2359F1539b15F092AADbAC332cf033767aec. Solana: send 0.01 USDC to AMYmNkTwwbfV5xAQzhAAmktWDCfJpg1UXn2yX2jHJB8Z.",
    "step3": "Retry with header PAYMENT-SIGNATURE (base64 x402 payload — a facilitator settles AND PAYS THE GAS: you need USDC only, zero ETH) or X-PAYMENT: 0x<txHash> (EVM) / <base58 signature> (Solana). The network is detected automatically.",
    "concierge": "Lost? GET /api/start?wallet=0x<yourAddress> — the machine walks you to payment step by step.",
    "step0_no_wallet": "No wallet? GET /api/wallet/new — free EVM wallet for agents, we store nothing. First deal from a fresh wallet: -50%."
  },
  "x402Version": 2,
  "agent_funding": "Агент без кошелька? Пользователь ведёт агента: пополни кошелёк агента USDC (Base) → проверка готовности БЕСПЛАТНО: GET /api/agent/<адрес_агента>/funding → агент платит сам (X-PAYMENT). Agent has no wallet? Its user funds the agent wallet (USDC on Base), checks readiness free at /api/agent/<addr>/funding — then the agent pays by itself."
}

Accepts

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

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xE61c2359F1539b15F092AADbAC332cf033767aec",
    "scheme": "exact",
    "network": "base",
    "mimeType": "application/json",
    "resource": "https://khotem.com/api/trust-score",
    "description": "KHOTEM /api/trust-score",
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json"
      }
    },
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {},
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "type": "json"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object"
        },
        "output": {
          "type": "object"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-10-09 22:47Z

Last indexed by Roundhouse

2026-10-26 14:46Z

Last enriched (probe, favicon, geo)

2026-10-10 05:46Z

x402 version

1

Max timeout

60s

Liveness probe

HTTP 402