Payments & Billing MCP Servers for HTTP / API

Pay-per-call agent tools over x402 (USDC on Base) — no signup or API key.

Place overdue B2B invoices for collection and track outreach, payments and remittances.

Shopify usage billing guard: App Events idempotency, retry risk, and cycle reconciliation.

Discover and pay for services from the Nevermined Catalog using a spend-capped budget.

Connect your AI assistant to NexPay to view payments, contacts, commissions, and exchange rates.

x402 paid content and Nib Tips with pending holds, refunds, public ledger, pricing, and reputation.

Escrow for AI-agent jobs: money is held until the work passes checks both agents signed.

Derive an invoice-match threshold.

Machine-native tools for autonomous agents with free routing and x402 USDC pay-per-call.

Verified monthly-seat catalog, account attribution, quota, overage, and MRR infrastructure.

Verified agentic-commerce protocol status + merchant agent-readiness reports. Free on testnet.

Wen Receipts: the site's own MCP server — dataset, enquiry, entities, listing (enquiry = a human...

Public demo: evaluate AI-agent payment authorization and approval policy. No signing, no settlement.

Pay-per-call onchain reads (Base, Ethereum, Gnosis), token verdicts and LLM chat over x402 USDC

Read Bill4Time clients, projects, time entries, expenses, invoices, payments, users and contacts.

Read Billomat clients, invoices, offers, credit notes, reminders; create clients and draft invoices.

Read Billy invoices, bills, contacts, products and postings; create contacts and draft invoices.

Read ChargeOver customers, invoices, transactions, subscriptions, reports; create customers, quotes.

Pay-per-call tx explainer, DeFi yields, token safety, SEC 8-K and OFAC data via x402 (USDC on Base).

186 pay-per-call tools: search, LLMs, UK KYB, FRED, Census, maps, crypto. x402 USDC.

USDC invoicing on Base: send invoices, share pay links, track payments and customers.