United States payments for AI agents — Stripe checkout via Stripe. Never holds funds.
Free
549 MCP servers
Payments & BillingWorks with Microsoft Copilot
Wen Receipts: the site's own MCP server — dataset, enquiry, entities, listing (enquiry = a human...
Free
Public demo: evaluate AI-agent payment authorization and approval policy. No signing, no settlement.
Free
TESTNET (Solana Devnet). Pay-per-call claim verification over x402 USDC; sources + confidence.
Free
232 pay-per-call agent tools: LLMs, search, browser, OCR, media, vision, email. x402 USDC.
Free
Pay-per-call onchain reads (Base, Ethereum, Gnosis), token verdicts and LLM chat over x402 USDC
Free
Read Bill4Time clients, projects, time entries, expenses, invoices, payments, users and contacts.
Free
Read Billomat clients, invoices, offers, credit notes, reminders; create clients and draft invoices.
Free
Read Billy invoices, bills, contacts, products and postings; create contacts and draft invoices.
Free
Read ChargeOver customers, invoices, transactions, subscriptions, reports; create customers, quotes.
Free
Pay-per-call tx explainer, DeFi yields, token safety, SEC 8-K and OFAC data via x402 (USDC on Base).
Free
186 pay-per-call tools: search, LLMs, UK KYB, FRED, Census, maps, crypto. x402 USDC.
Free
USDC invoicing on Base: send invoices, share pay links, track payments and customers.
Free
Pay-per-call x402 data tools on Base: Solana snapshots, prices, package metadata.
Free
Pay-per-call x402 data tools on Base: Solana snapshots, prices, package metadata.
Free
Validate, parse and render EU e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS 3.0, KSeF.
Free
76 pay-per-call APIs for AI agents: market, company, weather and dev tools, paid via x402 on Solana.
Free
ARCA electronic invoices (formerly AFIP) for Argentina: CUIT registration, invoices with CAE, PDF and email.
Free
23 agent tools via x402: crypto data, tx checks, web fetch. MCP pays Base USDC; HTTP adds 3 rails.
Free
Preview the month's billing from approved time, retainers and progress, then draft invoices to send
Free
Review invoice records, flag duplicates, validate totals, and prepare spreadsheet-safe CSV.
Free