x402 Data API

Imagio Labs' x402 seller: 57 paid endpoints + free MCP manifest. Deterministic web-intel (URL health, links, HTML->MD), trade math (2-pool arb scanner, spreads, whale/gas feeds), infra (multi-RPC Base gas+latency normalizer, bridge quotes, SEC EDGAR parser, npm/pypi/GitHub dependency pulse), agent infra (prompt sanitizer, JSON normalizer, token meter, retry budget, receipt verification). MCP-native via /mcp. Settles USDC on Base via x402.

AARN provides agent-native web access APIs over x402 v2 on Base USDC. Read a public webpage as clean, LLM-ready Markdown or plain text (Web Read, 0.002 USDC/call), or extract structured content from 1–5 public URLs for RAG ingestion, summarization and research (Web Content Extraction, 0.005 USDC/call). No API key or signup required. Evidence-backed Web Research is also available when enabled. Developer quickstart and Python/JavaScript buyer examples: https://aarn.space/get-started/

Paid API with a single /report endpoint returning Gulf of Mexico federal offshore oil and gas lease reports built from public BOEM data, filterable by area code, lease status or lease number. $0.15 USDC per query on Base or Solana.

AI-friendly JSON API for global news intelligence built on GDELT. Provides recent news, sentiment, geographic distribution, translingual coverage, and entity graph endpoints via x402 payments on Base USDC.

Paid x402 API from x402scan returning its ecosystem datasets: merchants, resources, buyers, facilitators and origin registry, priced per call in USDC on Base.

Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade.

Extracts verified emails, social links, 40+ tech stack signals, pricing tiers, and company summary for GTM & research agents.

Executes live Google News RSS + HackerNews Algolia search queries and returns clean, token-pruned results with zero ad bloat.

AI-written artist insights for AI agents, 0.005 USDC per insight on Base. Unknown artist returns 404 and is never charged. Free preview at /api/insight/preview.

Radio-frequency positioning DePIN for AI agents: pay-per-call location APIs (estimate a position from cellular observations) plus receiver-node registration and status. USDC on Solana and Base, x402 v2, with machine-readable discovery at /.well-known/x402 and a catalog at /api/x402/catalog.

Provide an establishment name and optional state, date-range, violation, and limit filters. Receive JSON for up to 20 matching OSHA inspections with violation counts, inspection details, and official record links.

Pay-per-call public web page tools for AI agents. POST /v1/extract returns JSON fields from a public page matching your JSON Schema ($0.01, charged only when ok is true). GET /v1/fetch returns a public page as markdown ($0.01). GET /v1/fees/base-exact returns the PayAI exact-scheme settle fee on Base ($0.005). x402 v2, USDC on Base, no account or API key.

Live web access for AI agents: fetch JavaScript-rendered pages as clean, LLM-ready markdown/text/html, extract elements by CSS selector, and capture full-page screenshots or PDFs of any public URL. Headless Chromium, SSRF-validated. Pay-per-call in USDC via x402 (exact scheme, Base) — no API key, no signup.

Pay-per-call API over US WARN Act layoff filings on Base: company search and profiles, event severity, amendment history and relationships, state and county rollups, plus briefs on downstream sector impact. Endpoints priced $0.01 to $0.25, no signup.

Podcast intelligence for AI agents: transcripts and semantic search across episodes, guests and appearances, chart rankings, advertising and sponsor analytics, political-bias and brand-suitability analytics, plus companies, people and topics as one knowledge graph. 100+ REST endpoints and an MCP server (mcp.particle.pro) payable per request in USDC on Base via x402 v2 (Coinbase CDP facilitator), $0.01 to $0.04 per call, no API key or signup. Capability manifest at /.well-known/x402, x-payment-info on every payable operation in /openapi.json, Bazaar declarations on every 402.

European government reference data as clean, cited JSON: ECB and Bank of England policy rates, VAT with reduced and zero bands, corporate and personal income tax, minimum wages, CPI inflation, statutory late-payment interest, official central-bank FX fixes and public holidays across 34 countries plus EU-level rates. Every value returns with the official source URL it was verified against, the date it took effect and the date we last checked it, so an answer can be audited rather than trusted. Each series also declares how it was obtained — GET /catalog?confidence=primary returns only values with no recorded verification limitation. Out-of-scope questions are refused free, with an explanation, rather than guessed. Also served: sub-national holiday calendars for Germany's 16 Länder and the four UK nations, point-in-time reads via ?as_at=YYYY-MM-DD, and settlement-date conventions including the enacted EU T+1 transition from 11 October 2027. Finished jobs, one paid call returning one cited dossier: cost this hire ($0.50, POST /v1/jobs/cost-hire: wage-floor verdict, employer and employee contributions, total employer cost and first working day for Germany, Spain, the UK, Italy and Poland) and charge this sale ($0.50, POST /v1/jobs/charge-sale, or $0.75 with a signed certified extract of the governing rate: whether to charge VAT, which country's and how much, under EU, UK and South African place-of-supply rules). Anything that cannot be answered in full is refused free, with no charge. One free catalog of all seven regional brands: https://afriref.dev/fleet/catalog.json. Paid per call in USDC on Base via x402 or MPP, no key, no signup. Public holidays are free.

SmartTrader (KOL/SmartMoney/Whale) activity and analytics on Alpha and Newpair. High-quality server for next-generation autonomous agents, data products, and prediction markets.

Hyperliquid smart-money intelligence, pay-per-request over x402 in USDC on Base AND Algorand. Whale positioning and entries/exits, open-interest and funding signals, notional flow with stealth accumulation, a squeeze radar scored 0-100, and AI market briefs. 24 endpoints from $0.001 to $0.99, no account and no API key. The Base 402 quotes both networks; the same catalog is also served under /algo/* priced in Algorand USDC (ASA 31566704, settled by the GoPlausible facilitator, fees sponsored). Free tier: aggregate stats and a market sample.

Marketplace of third-party data APIs (Apollo, Aviato, Fiber, Findymail, Abstract API, Andi and others) behind one x402 gateway. Each provider is paid at its own address.

Sells a prepaid, spend capped Apify API token paid in USDC on Base, to be used afterwards as a Bearer token against the Apify APIs to run scraping and automation Actors. Minimum amount 1 dollar.

DopamineDesk offers 94 live, billable x402 data products on Base USDC, including public storefront, research, developer, and agent-readiness tools. Every paid route has a public OpenAPI contract and an unpaid 402 challenge.

Verified, always-current business-day arithmetic for ~200 countries incl. subdivisions (German Bundeslaender, US states) and correct per-country weekend rules (e.g. Fri/Sat in Egypt). Check business days, add/subtract business days (deadline calculation), count days between dates. $0.001 per query (exact, USDC on Base). OpenAPI at /openapi.json, free introspection at /v1/schema.

Hardware price intelligence for agents. Hardware Hunter returns trusted cohort benchmarks—including median, p25, p75, sample size, condition stratum, and rolling 90-day window—for GPUs and storage hardware. Queries cost $0.01 in USDC on Base through x402. If trusted data is unavailable, the response says so and costs nothing.

Indonesian data for AI agents, paid per call in USDC over x402 on Base, Polygon, Arbitrum or Avalanche: fresh Indonesia news headlines by topic with source, link, entities and auditable sentiment; keyword search; ranked beat briefings; all-8-topic digest; brand coverage monitor; USD/IDR and any FX pair with a 30-day series; BTC/ETH/USDT in rupiah from Indodax with the Indodax-vs-global premium; BMKG earthquakes; public holidays. Cheapest route $0.05 per call, free previews, 30-day licence $99.