x402-protocol-integration

Exchange-rate history between two dates — Genesis402 / UnyKorn Operator Network

ISBN lookup: title, publisher, date, pages — Genesis402 / UnyKorn Operator Network

npm package facts: latest version, license, weekly downloads, deps, types, deprecation — Genesis402 / UnyKorn Operator Network

One stablecoin: supply by chain, peg price and depeg — Genesis402 / UnyKorn Operator Network

FDA recalls and enforcement reports: food, drugs, devices — Genesis402 / UnyKorn Operator Network

Domain WHOIS/RDAP: registrar, created, expires, age, status, nameservers, DNSSEC — Genesis402 / UnyKorn Operator Network

Structured facts about an entity from Wikidata (founders, HQ, CEO, website, ticker, inception...) — Genesis402 / UnyKorn Operator Network

Website security-headers audit with A-F grade, cookie flags and version leaks — Genesis402 / UnyKorn Operator Network

Wikipedia article summary (lead section) by title — Genesis402 / UnyKorn Operator Network

IP address ownership (RDAP): network, organization, country, CIDR — Genesis402 / UnyKorn Operator Network

Scholarly paper search across 150M+ Crossref records — Genesis402 / UnyKorn Operator Network

PyPI package facts: version, license, Python requirement, release date — Genesis402 / UnyKorn Operator Network

Wikipedia search in any language edition — Genesis402 / UnyKorn Operator Network

RSS/Atom feed reader: latest items with titles, links, dates, summaries — Genesis402 / UnyKorn Operator Network

Renders a finished one-page equity tearsheet PNG for a US-listed stock — not raw JSON to assemble. Fans out to profile, price, 1-year history, fundamentals, technicals and news, then draws a 1-year price chart with its 50-day average plus key stats (market cap, P/E, margins, dividend yield, 52-week range) and headlines. Returns the data plus a hosted `artifact.png_url`. From x402stock

Agent-payments market snapshot, measured by us: x402 Bazaar listings, sellers, 30-day paid calls, concentration, how many sellers have real buyers, registry dead rates, wallet shelf sizes. Dated JSON.

Pre-payment guard for x402 agents: free POST /v1/intel/preflight before spending, paid signed V7 trust receipt after. Evaluate any counterparty BEFORE paying — 0.05 USDC buys the proof (Solana mainnet). POST /v1/intel/preflight is free, no auth.

Hacker News front page right now — Genesis402 / UnyKorn Operator Network

Signed conformance report over a whole x402 service. Sweeps every paid endpoint the service declares, GET and POST alike, runs the same checks /v1/preflight runs on each, grades the result, and returns an ed25519-signed report the operator can publish and anyone can verify offline. Coverage is inside the signature, so a partial sweep can never be passed off as a full one. Retrieving any report is free forever.

Competitors for one x402 resource or capability, over our ~18,000-service harvest of the x402 directories plus our own unpaid 402 probes. Returns the price band (min/median/p90/n) over real listings only, price provenance per rival, whether it publishes a spec an agent can call unattended, observed 30-day demand and settlement network. Never probed reads observed:false, never a guess. Buy before pricing or listing a service, or choosing an endpoint. Charges nothing when nothing matches.

Before you pay an x402 endpoint you have never called, buy what we observed when WE called it: the outcome of our own unpaid probe, when we ran it, whether it answered a correct 402 with readable payment terms, and whether it publishes a call spec you can build a request from. Never probed returns observed:false — an honest unknown, never an invented uptime figure. Optional ML-DSA-65 attestation. If we hold no record of the URL at all, you are not charged.

Buy this before you set or change the price of an x402 endpoint. Send a capability description; get min/median/p90 of what comparable listings in our own ~18,000-service index actually charge, a recommended price that is itself an observed ask, an exact 95% confidence interval for it from the order statistics, and the sample size it rests on. Below 8 priced comparables it refuses and charges nothing. Deterministic arithmetic over real listings — no model.

Buy before building or pricing an x402 service. Send an area ("geocoding", "options data"); get the capabilities inside it that few operators serve anywhere in our 18k-service index, each with its listings and, where at least 8 of them publish a usable price, a min/median/p90 band over those advertised prices. Demand appears ONLY where 30-day call and payer counts were observed; every other row is labelled supply-side only, because thin supply is not evidence of demand.

Named-entity extraction: people, orgs, places, products, dates, money, tickers — Genesis402 / UnyKorn Operator Network