score.sarnai.dev

Live 402 challenge

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

{
  "error": "No payment was attached to the request.",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x42a3c399f83BCcC3b9eEf81e65954a715D54855E",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
      },
      "payTo": "38Fmaf3MWTR6AWPWrtrdXoqn6iqfVcUBHMFRhiUAEjFb",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "guidance": {
    "docs": {
      "openapi": "https://score.sarnai.dev/openapi.json",
      "llms_txt": "https://score.sarnai.dev/llms.txt"
    },
    "price": "$0.01 USDC per lookup when there is a score (an agent_id with no history, or a reserved test- id, is answered free)",
    "how_to_pay": "Send the request with no payment: the 402 answer lists the price and networks (USDC on Base or Solana) in the PAYMENT-REQUIRED header (x402 v2). Sign it with an x402 client and resend the same request with the PAYMENT-SIGNATURE header.",
    "what_to_do": "Pay with x402 v2 as described in how_to_pay, or send a valid request while the free allowance lasts. Nothing was charged by this response.",
    "free_allowance": {
      "message": "Free during launch: 1000 verification checks a day per caller through MCP and REST (POST /verify/schema and POST /verify/deliverable), then $0.02 USDC per call via x402.",
      "available": true,
      "resets_at": "2026-10-15T00:00:00+00:00",
      "applies_to": "valid requests to POST /verify/schema and POST /verify/deliverable and the MCP tool verify_schema; one count per client address",
      "limit_per_day": 1000,
      "remaining_today": 999
    },
    "example_request": {
      "url": "https://score.sarnai.dev/score/example-agent-001",
      "method": "GET"
    },
    "free_alternative": "GET https://score.sarnai.dev/reputation/{agent_id} is free (pass/fail counts, no score)."
  },
  "resource": {
    "url": "https://score.sarnai.dev/score/sarnai-scoretest-1",
    "tags": [
      "trust-score",
      "reputation",
      "agent-reputation",
      "ai-agents",
      "verification-history"
    ],
    "mimeType": "application/json",
    "description": "Check an AI agent's track record before you rely on it: signed verification history with pass/fail counts and a recency-weighted score with confidence interval. Paid only. $0.01 USDC, no signup, x402 v2 (Base/Solana).",
    "serviceName": "Agent Output Verifier"
  },
  "free_trial": {
    "code": "paid_only",
    "price": "$0.01",
    "message": "Agent Scores are paid only: $0.01 per lookup.",
    "available": false
  },
  "x402Version": 2,
  "payment_error": {
    "charged": false,
    "message": "This call requires payment; none was attached.",
    "retryable": true,
    "error_code": "no_payment",
    "retry_after": null,
    "next_actions": [
      {
        "action": "submit_x402_v2_payment"
      }
    ],
    "payment_terms": {
      "accepts": [
        {
          "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "extra": {
            "name": "USD Coin",
            "version": "2"
          },
          "payTo": "0x42a3c399f83BCcC3b9eEf81e65954a715D54855E",
          "amount": "10000",
          "scheme": "exact",
          "network": "eip155:8453",
          "maxTimeoutSeconds": 300
        },
        {
          "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
          "extra": {
            "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
          },
          "payTo": "38Fmaf3MWTR6AWPWrtrdXoqn6iqfVcUBHMFRhiUAEjFb",
          "amount": "10000",
          "scheme": "exact",
          "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
          "maxTimeoutSeconds": 300
        }
      ],
      "resource": {
        "url": "https://score.sarnai.dev/score/sarnai-scoretest-1",
        "tags": [
          "trust-score",
          "reputation",
          "agent-reputation",
          "ai-agents",
          "verification-history"
        ],
        "mimeType": "application/json",
        "description": "Check an AI agent's track record before you rely on it: signed verification history with pass/fail counts and a recency-weighted score with confidence interval. Paid only. $0.01 USDC, no signup, x402 v2 (Base/Solana).",
        "serviceName": "Agent Output Verifier"
      }
    }
  }
}

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": "0x42a3c399f83BCcC3b9eEf81e65954a715D54855E",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://score.sarnai.dev/score/sarnai-scoretest-1",
    "description": "",
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "38Fmaf3MWTR6AWPWrtrdXoqn6iqfVcUBHMFRhiUAEjFb",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "mimeType": "application/json",
    "resource": "https://score.sarnai.dev/score/sarnai-scoretest-1",
    "description": "",
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog

2026-10-14 04:39Z

Last indexed by Roundhouse

2026-10-14 20:16Z

Last enriched (probe, favicon, geo)

2026-10-14 10:46Z

x402 version

1

Max timeout

300s

Liveness probe

HTTP 402