x402 Data API
x402 data APIs that return market, on-chain, and reference datasets behind a pay-per-request HTTP 402 paywall. Each service below is live-monitored: hit an endpoint, receive a 402 with payment terms, settle onchain, and retry.
By task: Web Scraping API · Web Search API · Screenshot API · PDF API · IP Geolocation API · WHOIS API · Company Data API · News API · Weather API · Geocoding API · Real Estate API · Social Media API · Lead Enrichment API · SEO API · Salary API · Web Search MCP · Best Real Estate API · Data Enrichment API · Backlink API · Keyword Research API · Best SEO API
DATA SERVICES ── 443 total ── for live status visit /status
STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.
VOL 30D and BUYERS 30D are a measured 30d floor across listed services, not an ecosystem total; an unmeasured service is not counted as zero.
·sh = shared payout address; volume attributed pro-quota (buyers left whole).
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| STATUS | NAME | DESCRIPTION | EP | FROM $/REQ | UPTIME · DAILY ROLLUP | VOL 30D | BUYERS 30D | NETWORKS |
|---|---|---|---|---|---|---|---|---|
| ● | agdata | DescriptionUnblocking and fresh web data for AI agents: any URL as Markdown, screenshots, YouTube transcripts and comments, Google Maps and Amazon reviews, LinkedIn and Indeed jobs, Google News, web search, X replies. Pay per call in stablecoins with x402 or MPP; remote MCP server at /mcp. | 22 | $0.0132 | 100.00% | $59 | 21 | Base/POL/SOL |
| ● | x402node | DescriptionPay-per-call API with more than 500 endpoints on a single host: exchange rates, crypto and stock prices, on-chain and DeFi data, commodities, text and web utilities. x402 payment in USDC on Base and Solana, full catalog at /openapi.json. | 10 | $0.004 | 100.00% | $38 ·sh | 65 | Base/SOL |
| ● | txdecode | DescriptionDecode any confirmed Base (mainnet) transaction into a human-readable action plus normalized asset movements (token, amount, USD value). Pay-per-call via x402 — $0.005 USDC, no signup, no API key. | 1 | $0.005 | 100.00% | $0 | 0 | Base |
| ● | URL Unwrap / Redirect Tracer | DescriptionSingle GET endpoint that follows an HTTP redirect chain using HEAD requests only, returning every hop (URL and status), the final URL, a redirect count and advisory warnings such as redirect loops or https to http downgrades. JSON output. Operated by x402 Atlas. | 1 | $0.009 | 100.00% | $0.26 ·sh | 19 | ARB/Base/POL/SOL |
| ● | Agent Search (CyberWareX) | DescriptionWeb search API for agents | 1 | $0.003 | 100.00% | $0 | 0 | Base |
| ● | OPX x402 Search Router | DescriptionTask-aware decision intelligence for x402 web-search APIs. Uses recent paid probe evidence to recommend the best currently tested provider plus independent fallbacks before an autonomous agent spends on downstream search. | 1 | $0.002 | 100.00% | $0.14 | 2 | Base |
| ● | DataForAgents | DescriptionPay-per-request JSON datasets for autonomous agents via x402 (USDC on Base). Steam catalog search/insights, FIFA World Cup 2026 player data, and news Alpha/Shift pulses. No API keys — unpaid calls return HTTP 402. | 6 | $0.01 | 100.00% | $0.39 | 12 | Base |
| ● | MDataAccess | DescriptionPay-per-request business, people, company, lead, and web intelligence for autonomous AI agents. Search and enrich companies and people, find decision-makers and sales leads, and read public web content via x402 payments on Base. | 7 | $0.002 | 100.00% | $0.004 | 2 | Base |
| ● | Spread Paywall API | Description71 pay-per-call x402 endpoints: live SOL CEX/DEX spread data, AI inference, whale watching, NPI/DEA verification, web scraping, tokenized stocks, Polymarket data, pump.fun launchpad data, utilities and more. Paid in USDC on Base and Solana. | 60 | $0.001 | 100.00% | $1 | 16 | Base/SOL |
| ● | GDELT News Search and Timeline | DescriptionPay-per-call wrapper over The GDELT Project's public news API: full-text search across global media (/search, $0.005) and a merged coverage-volume plus average-tone time series for any query (/timeline, $0.02), returned as normalized JSON. | 2 | $0.005 | 100.00% | $0.31 ·sh | 19 | ARB/Base/POL/SOL |
| ● | ByKaranteli Crypto Derivatives Data | DescriptionPay-per-call crypto derivatives depth: multi-exchange liquidation map levels, Deribit options tape history, and VPIN order-flow toxicity history for BTC, ETH and SOL. Live snapshots stay free and unmetered; paid calls buy depth and history. | 3 | $0.10 | 100.00% | $30 | 15 | Base/SOL |
| ● | IPIntel.ai IP Lookup & Risk API | DescriptionPay-per-call IP intelligence API. Send an IPv4 or IPv6 address and get JSON with a risk score and label, ASN, ISP, organization, geolocation, reverse DNS, hosting/proxy/Tor flags, verified bot detection and a short threat summary. Priced at $0.001 per call in USDC on Base. | 1 | $0.001 | 100.00% | $4 ·sh | 27 | Base |
| ● | HTTP Security Headers Check | DescriptionOne HEAD request against a URL, returning its parsed HTTP security headers as JSON: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, plus advisory warnings and any disclosed Server or X-Powered-By. $0.01 per call on Base. Operated by x402 Atlas. | 1 | $0.01 | 100.00% | $0.50 ·sh | 33 | ARB/Base/POL/SOL |
| ● | ASI – Agent Search Index | DescriptionWeb search API for AI agents over ASI's own crawled English web index. Returns title, URL, snippet, source and date as JSON. The x402 endpoint costs 0.01 USDC on Base per search; the same search is also available for free at /v1/search, so paying is voluntary. | 1 | $0.005 | 100.00% | $0.07 | 7 | Base |
| ● | Phi Longevity PRISM — Full Report | DescriptionClinically-validated, citation-backed biomarker analysis for agents. Submit a synthetic or de-identified biomarker panel; receive a multi-track analysis (up to 4 condition tracks), a Phi Score estimate with per-pillar breakdown, and evidence-tiered recommendations with peer-reviewed citations as a portable markdown report. $4.99 USDC on Base via x402. Stateless, no PHI custody. Free try-before-buy tools via MCP at https://philongevity.com/mcp. | 1 | $4.99 | 100.00% | $0 | 0 | Base |
| ● | Document Analysis & OCR — Micropayment, No Transfer Fee | DescriptionTwo endpoints, billed per page, paid in Nano (XNO). OCR: image to text in English, German and Swahili — 0.003 XNO per image (~0.1 US cent), answers in about one second; printed and typed text only, handwriting is not recognised. Document analysis: title, language, type, summary, key points, entities (people, organisations, places, dates, amounts) and open points as structured JSON — 0.009 XNO per page of 2400 characters (~0.3 US cent), up to 50 pages. Self-hosted, no third-party API behind it. Nano has no transfer fee and settles in under a second, so the full amount arrives and there is no practical minimum: no account, no API key, no signup, no subscription. If a payment is too small for the document, the response states exactly how much is missing instead of rejecting it. Machine-readable service card at /.well-known/agent-card.json. | 2 | --- | 100.00% | --- | --- | |
| ● | Spotify API | DescriptionSpotify Data API for Millions of songs & podcasts, artists, albums, playlists and more. | 41 | $0.01 | 100.00% | $0.11 | 8 | Base |
| ● | E-Commerce & SaaS Product Catalog / Price Extractor | DescriptionExtracts normalized product catalogs, live prices, variants, and availability from online stores. | 1 | $0.01 | 100.00% | $0 | 0 | Base |
| ● | pumpdata | DescriptionEvery PumpSwap trade, ever, and every pump.fun bonding-curve trade since March 2025, read from the chain ledger with the dead coins kept, for trading agents by the call: the base rate for a market-cap band (how many coins crossed it, how many reached 2x/5x/10x/20x in 3 h), wallet records (winner, bot, supply seller, new), launch records (deployer, bundle, insiders, matches), and an honest replay of a pick list. USDC on Solana over x402; MCP at /mcp; OpenAPI at /openapi.json; a free daily file at /public/baserate.json. | 4 | $0.005 | 100.00% | $10 | 7 | SOL |
| ● | Trench Lessons | DescriptionFree daily Solana meme-coin research lessons plus a pay-per-call x402 USDC API for bots: lessons feed $0.005, per-mint risk flags $0.01. Solana mainnet via the PayAI facilitator. Research, not financial advice. | 2 | $0.005 | 100.00% | $0.35 | 5 | Base/SOL |
| ● | FundingRates | DescriptionPerpetual futures funding rates for BTC, ETH, SOL, AVAX, LINK and ARB across OKX, Hyperliquid and dYdX, with a long/short skew signal per asset. | 1 | $0.05 | 100.00% | $0.89 ·sh | 43 | Base/SOL |
| ● | Genuine Good Grants / Good Grants API | DescriptionA human-reviewed Grants.gov research and screening API from Genuine Good News, with current-search normalization, sourced detail, transparent fit signals, decision-ready briefs, deterministic preflight checks, and a 30-day agent pass. | 6 | $0.05 | 100.00% | $0.65 | 4 | Base |
| ● | selfagent Bounty Radar | DescriptionRanks public Web3 bug-bounty and audit programs as audit targets using a weighted scoring model (payout ceiling 30%, no-KYC accessibility 30%, code freshness 18%, repo surface 12%, low competition 10%). Every response returns the full score components so the caller can re-weight the model themselves. Written and operated by an autonomous AI agent acting for Ofir Baranes. | 1 | $0.01 | 100.00% | $0.05 | 1 | Base/POL |
| ● | IRS Internal Revenue Bulletin API | DescriptionVerbatim IRS Revenue Rulings, Procedures, Notices & Treasury Decisions since 2003. Free search over 6,300+ docs; $0.01/doc via x402 on Base. | 1 | $0.01 | 100.00% | $0.05 | 2 | Base |
| ◐ | Grokzilla x402 Micro Pay | DescriptionHumanless agent microservices marketplace. Pay-per-call USDC on Base via x402. Native skills include token count, URL normalize, JSON flatten/validate, text diff, HTML clean, keyword extract, AI detector, OSINT graph, SEO, and deep research. Soft titles Person lookup / IP intel lookup reserved for later when those routes return valid 402. | 11 | $0.004 | 100.00% | $5 | 10 | Base |
Measurement methodology
Page snapshot as of .