Oblique Markets · Paid Research Answer

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://api.oblique.markets/api/v1/paid/research-answer", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "question": "One concise research question"
  }),
});
const data = await res.json();

curl -X POST \
  "https://api.oblique.markets/api/v1/paid/research-answer" \
  -H "Content-Type: application/json" \
  -d '{"question":"One concise research question"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "answer": "x402 is an open HTTP payment protocol that revives the 402 status code so software agents pay per request in stablecoins without API keys; it was published by Coinbase in 2025 and is developed as an open-source standard with a public facilitator on Base [1][2].",
  "cited": [
    1,
    2
  ],
  "generated_at": "2026-09-06T20:00:02.000Z",
  "question": "What is the x402 payment protocol and who maintains it?",
  "reason": null,
  "receipt": {
    "budget": {
      "daily_cap_atomic": 500000,
      "per_request_cap_atomic": 10000,
      "spent_today_atomic": 20000
    },
    "door_price": "$0.01",
    "upstream": {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "cost_atomic": 10000,
      "cost_usd": 0.01,
      "network": "eip155:8453",
      "pay_to": "0xd92fab07e57dfafe9bb9dbbb3ce01651a61dca18",
      "payer": "0xC335983E964248052BAd764D6eb0801475Ec6A4C",
      "provider": "pay-per-call x402 web search",
      "requested_at": "2026-09-06T20:00:00.000Z",
      "resource": "https://x402.tavily.com/search",
      "responded_at": "2026-09-06T20:00:01.000Z",
      "results_returned": 2,
      "scheme": "exact",
      "settlement": {
        "network": "eip155:8453",
        "payer": "0xC335983E964248052BAd764D6eb0801475Ec6A4C",
        "success": true,
        "transaction": "0xabc…"
      },
      "upstream_response_time_ms": 1.41
    }
  },
  "scope": {
    "exclude_domains": [],
    "freshness": "year",
    "include_domains": []
  },
  "sources": [
    {
      "id": 1,
      "label": "x402 — Payment Required",
      "published_at": "2025-05-06",
      "relevance": 0.92,
      "retrieved_at": "2026-09-06T20:00:01.000Z",
      "snippet": "x402 is an open payment protocol that revives the HTTP 402 status code so AI agents can pay per request in stablecoins…",
      "url": "https://x402.org/"
    },
    {
      "id": 2,
      "label": "x402 protocol docs",
      "published_at": null,
      "relevance": 0.88,
      "retrieved_at": "2026-09-06T20:00:01.000Z",
      "snippet": "A facilitator verifies and settles EIP-3009 USDC authorizations on Base…",
      "url": "https://docs.cdp.coinbase.com/x402/welcome"
    }
  ],
  "status": "answered",
  "synthesis": {
    "completion_tokens": 96,
    "model": "inclusionai/ling-3.0-flash",
    "prompt_tokens": 812
  },
  "uncertainty": "Source 2 is a vendor page; governance beyond Coinbase is not described in these sources."
}