"A guide to writing for publication" matching MCP connectors:

Buy a $2 novelty digital rock over x402 (USDC on Base). Serves payment instructions only.

Ready for a new way to bill pay? Pay any US bill in a snap, right from your AI assistant. Describe or snap a photo of your bill (electric, water, gas, internet, phone, medical, credit card, rent, parking tickets, traffic violations and more) and Papaya reads it, then hands you a secure link to pay by card. Fast, secure, and no juggling twelve logins, with full or partial payments and status updates. Available in the US only. Powered by Papaya (papayapay.com).

Pay any US bill in a snap, right from your chat — utilities, medical, rent, parking tickets & more.

ManaBuy MCP Server is a stdio-based Model Context Protocol server for integrating ManaBuy product and order APIs with MCP clients. It exposes tools for product search, product detail retrieval, SKU and order-field inspection, order quotation, authenticated order creation, order status lookup, and order detail retrieval, with explicit confirmation required before any order-creation workflow.

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

Browse, price, configure and order custom-made blinds for South African windows. Instant ZAR pricing, cart, checkout and payment via Yoco or Ozow EFT. No authentication required.

Hosted MCP server for commerce math: fees, invoice totals, discounts, proration, installment plans.

Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.

Agent-to-business commerce sandbox: intents, offers, bookings. Demo data, ed25519-signed calls.

Payments and pricing math sellers do weekly, computed deterministically over MCP: processor_fees breaks down payment costs with editable presets, charge_to_net answers what to charge to net a target amount, invoice_total validates and totals line items, with discount_stack, proration, and installment_plan in the premium tier.

Verified directory for machine payments (x402 & MPP): check services and wallets before agents pay.

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

Pre-payout IBAN screening for AI agents: validation, sanctions, Swiss clearing, risk scoring

Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.

Pay-per-request webpage-to-Markdown extraction for AI agents. $0.005 USDC via x402 on Solana.

Split shared expenses in a group — no account needed. See who owes whom and settle up.

MCP marketplace: agents pay per call in USDC via x402. Plus Base chain data and a USDC<->bank ramp.

Catch a mistyped barcode, ISBN, VIN, NPI or LEI before a bad identifier corrupts a record.

Preflight trust for agent payments, purchases, delegation, approvals, writes, and releases.

Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.