Curated x402 services
Find paid servicesyour agent can trust.
Explore x402 services by category to find the right endpoint for your agent. A service can list multiple endpoints, and payment requirements are read live when you test. Your policy still decides whether it may pay.
Curated services
Discover published x402 services and compare the interfaces each service offers.
One HEAD request against any URL returns 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.
Check a domain SPF, DMARC, DKIM and MX records and get parsed results as JSON, flagging common gaps like SPF +all, more than 10 SPF lookups, DMARC p=none and missing DKIM selectors. Pay per domain in USDC on Base.
Follow an HTTP redirect chain using HEAD requests only: every hop (URL and status), the final URL, redirect count and advisory warnings like loops or HTTPS-to-HTTP downgrades, as JSON. Operated by x402 Atlas.
ip402.xyz is a paid IP-intelligence endpoint returning normalized geolocation and ASN data for a single IPv4 or IPv6 address — pay per lookup in USDC on Base.
Structured literary content for AI agents, including complete selected text units, metadata, characters, scenes and editable baseline reading direction. Discover resources freely and purchase production-material JSON through x402. Content, ready to work.
Tavily Search is a web search API built for AI agents. POST /search for ranked results, an optional generated answer, raw page content and images with advanced search depth. Pay per request in USDC on Base via x402 — no API key or account.
AgentMail is an API-first email solution built for AI agents. Inboxes, messages, threads, attachments and websocket feeds are exposed over a payment-gated x402 surface, with the full SDK unlocked through per-call settlement in USDC.
Second Opinion reviews AI model outputs for quality verification — a pay-per-call x402 API in USDC on Base with no account or API key.
DNS, IP, AS and Lightning Network intelligence across 53 endpoints: DNS lookups, reverse DNS, IP geolocation, BGP/ASN analysis and reputation scoring. Pay per lookup in USDC on Base via x402.
Neynar serves Farcaster protocol data for users, casts, feeds and reactions. Look up a user by handle, fetch casts by hash or read curated feeds — x402 pay-per-request in USDC on Base.
Interzoid data-quality APIs — name matching, company standardization, email validation and company intelligence across 50+ endpoints — are payable per request in USDC on Base via x402.
OneSource is an RPC API for Ethereum mainnet and Sepolia with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key.
Pay-per-use headless browser sessions for AI agents — no API keys or accounts, just crypto via x402 on Base. Create a browser session with prepaid time and get a WebSocket connection URL to automate from.
Apify AGI sells a prepaid, spend-capped Apify API token paid in USDC on Base, then used as a Bearer token against Apify APIs to run scraping and automation Actors. Minimum amount is 1 dollar.
Content Intelligence extracts clean text, metadata and links from any URL and returns an AI summary, sentiment, topics, named entities and content type as structured JSON. Priced per call in USDC on Base or Solana.
Hugen DeFi Intelligence is a data and token security API: token and address risk checks, phishing and approval lookups, bridge routes and quotes, plus chain-level stablecoin supply, DEX volume and protocol fees. JSON over GET, $0.01 per call in USDC on Base or Solana.
Hugen Intel is a crypto due-diligence API: token, wallet, contract and DeFi yield reports combining security checks, market data and an AI risk score from 0 to 100 with red and green flags. Full report $0.50, lite variant without AI prose $0.02, in USDC on Base or Solana.
Gotobi Calendar returns Japanese FX gotobi settlement dates and public holidays (including substitute holidays) for a month, with today and next-date lookups. Six paid endpoints at $0.01 per request in USDC on Base or Solana.
Domain Intelligence runs WHOIS, multi-resolver DNS, SSL/TLS certificate, technology stack, security headers, subdomain discovery and redirect-chain checks — each alone or combined into one full report. Paid per call in USDC on Base or Solana.
Render any public URL to a base64 JPEG or PNG screenshot with full-page capture, CSS selector targeting, device presets and dark mode. Returns page title, file size and render time. Paid per capture in USDC on Base or Solana.
Scout queries 18 sources in parallel — Hacker News, GitHub, npm, PyPI, arXiv, Stack Overflow, X/Twitter, Product Hunt and more — returning structured JSON plus aggregated multi-source research reports. Paid per call in USDC on Base or Solana from $0.01.
Given a city name or coordinates, Hugen Weather returns current conditions and up to 7 days of forecasts as structured JSON. Pay per call in USDC on Base or Solana via x402.
Resolve Ethereum addresses to entity labels, name tags and categories from roughly 412,000 labeled addresses, and see large ETH transfers with labeled counterparties. Paid per call in USDC on Base.
Best bid/ask FX aggregated from multiple sources across 14 instruments (major pairs and XAUUSD), with quality metadata: fresh-source count, quality status and spread comparison against a single source. Paid per call in USDC on Base or Solana, with a free delayed demo feed.