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.
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.
SQLGuard is an Execution Certificate Firewall: prepaid x402 USDC credits for sandboxed SQL validation plus Ed25519 attestations before agent production writes. Available over MCP and HTTP on Base mainnet.
Pre-execution security screening for autonomous AI agents. 402Shield checks proposed crypto payments and EVM transactions before execution and returns ALLOW, REVIEW or BLOCK with machine-readable risk scores, reasons and evidence. The production API is x402-native on Base mainnet and costs $0.05 USDC per decision.
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.
Original AI-assisted and independently tested JavaScript developer tools, available via x402 v2 on Base with native Circle USDC at 0.005 per call. Paid GET #1 returns a reproducible synthetic CSV structural-quality example (not inspection of the buyer's own data). Paid GET #2 runs a dynamic public-domain email DNS MX/SPF/DMARC configuration check on the query parameter supplied by the buyer. No SMTP sending, personal mailbox verification, email deliverability guarantee, certification or raw cust
Pay-per-request operational telemetry for agent workflows on Base USDC, with documented challenge responses.
Pay-per-request operational telemetry for agent workflows on Base USDC with documented challenge responses.
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.