API Marketplace
Curated public APIs — finance, news, weather, crypto and more — callable through one x402 payment. No API keys, no signups: pay $0.01, get data. Every call is also a live probe.
| API | Category | Auth | Price | Probes | Status |
|---|---|---|---|---|---|
| Charity SearchNon-profit charity data | Business | apikey | $0.02 | 1/1 | live |
| Clearbit LogoSearch for company logos and embed them in your projects | Business | apikey | $0.02 | 1/1 | live |
| Domainsdb.infoRegistered Domain Names Search | Business | none | $0.01 | 1/1 | live |
| FreelancerHire freelancers to get work done | Business | oauth | $0.02 | 1/1 | live |
| Funding SignalsCompanies that just raised funding, scored as sales leads, from public SEC filin | Business | apikey | $0.02 | 1/1 | live |
| GmailFlexible, RESTful access to the user''s inbox | Business | oauth | $0.02 | 1/1 | live |
| InvovateGenerate PDF, JSON & UBL invoices in 11 languages from one JSON POST | Business | apikey | $0.02 | 1/1 | live |
| Katalis UK Company EnrichmentVerified UK company profiles with an AI summary and accuracy score, from Compani | Business | apikey | $0.02 | 1/1 | live |
| Legal Sandbox GeorgiaFind verified legal specialists in Georgia from natural-language queries | Business | none | $0.01 | 1/1 | live |
| MailchimpSend marketing campaigns and transactional mails | Business | apikey | $0.02 | 1/1 | live |
| MeirraSEO monitoring, email verification, lead generation, and marketing analytics | Business | apikey | $0.02 | 1/1 | live |
| Pick an AgencySearch 47,000+ marketing agencies by service, location and rating | Business | none | $0.01 | 1/1 | live |
| RedashAccess your queries and dashboards on Redash | Business | apikey | $0.02 | 1/1 | live |
| SignalizGTM enrichment, lead generation, email verification, and company signals | Business | apikey | $0.02 | 1/1 | live |
| SmartsheetAllows you to programmatically access and Smartsheet data and account informatio | Business | oauth | $0.02 | 1/1 | live |
| SquareEasy way to take payments, manage refunds, and help customers checkout online | Business | oauth | $0.02 | 1/1 | live |
| SwiftKanbanKanban software, Visualize Work, Increase Organizations Lead Time, Throughput & | Business | apikey | $0.02 | 1/1 | live |
| Tomba email finderEmail Finder for B2B sales and email marketing and email verifier | Business | apikey | $0.02 | 1/1 | live |
| TrelloBoards, lists and cards to help you organize and prioritize your projects | Business | oauth | $0.02 | 1/1 | live |
| VillagePerson and company enrichment plus warm introduction paths through your network | Business | apikey | $0.02 | 1/1 | live |
| markerapiTrademark Search | Business | none | $0.01 | 1/1 | live |
GET /api/market # catalog (free) GET /api/market/<id>/call?path=/v1/endpoint&foo=bar # 402 → pay $0.01 USDC/USDT → retry # x-payment-tx: BASE:<txHash> # x-agent-wallet: <yourWallet> → first 3 calls free # x-ref: <referrerWallet> → they earn 5%, you pay same