"An overview of end-to-end testing" matching MCP servers:

Enables building client statements of account from existing invoices, credit notes, and deposits, with aged outstanding balances, PDF/plain-text output, and drafted payment chasers at friendly, firm, or final levels.

A Model Context Protocol (MCP) server that provides testing and debugging tools for Stripe integrations, including test clock management, customer and product management, and subscription testing.

Enables interacting with the GTA7 Lab city bank through MCP tools, including balance checks, transaction searches, PIX transfers, bill payments, card issuance, loan simulation and requests, and investments.

Enables AI assistants to search real products, purchase with user approval, track deliveries, and run a seller business end to end via the Firestarter commerce platform.

Lets coding agents like Claude Code, Cursor, and Codex call MONA Pay directly while developing, so they can create VietQR codes and checkout links, look up incoming transactions, link bank accounts via OTP, and configure or test webhooks (plus email and Zalo notifications) without leaving the editor. It also verifies HMAC-SHA256 webhook signatures offline and generates ready-to-use webhook handler snippets and sandbox transactions for end-to-end payment testing.

Enables end-to-end ride-booking workflows, including pickup and destination selection, ride estimates, solo or ShareMatch shared rides, driver tracking with live ETAs, trip management, payments, receipts, saved places, and safety/support tools.

Enables agents and apps to verify end-user identity through company API keys, human login links with multi-channel notifications, OIDC client registration, and budget-aware billing.

Enables AI agents to accept non-custodial crypto payments by creating hosted checkout sessions and invoices, tracking payments and wallets, registering and verifying signed webhooks, purchasing prepaid credits, and querying or exporting the book of record. Test-mode payment simulation lets agents verify the full flow end to end.

Enables AI agents to organize group plans end to end: find when people are free, negotiate prices with venues, split costs, and settle payments through PayPal within each person's spending limits. Bookings, invitations, and alternatives nearby are handled over MCP, REST, and A2A with receipts anyone can verify.

Deploy and monetize agent-built apps from one MCP. Ship a full-stack app (login, database, usage billing) with one command, then charge the signed-in end user per API call via X-Settle-Payer (end-user-pays: cost times markup, app owner earns the markup).

Enables AI agents to test Cashfree payment integrations end-to-end by creating orders, simulating payments, listening to webhooks, and verifying signatures via MCP tools.

Enables an AI agent to settle HTTP 402-gated resources end-to-end: quote conversions, choose from the seller's accepted rails, sign gasless EIP-712 authorizations under enforced per-call and lifetime caps, and verify settlement receipts while tracking wallet balance. Runs self-hosted over stdio or Streamable HTTP, defaulting to testnet with mainnet requiring explicit confirmation.

Enables AI coding agents to integrate stablecoin crypto checkout into applications by registering workspaces, configuring settlement wallets and webhooks, creating payment links and invoices, and verifying payment status and webhook signatures. It exposes these payment operations as tools over stdio so agents can complete end-to-end payment setup without manual dashboard work.

An MCP server that enables commerce operations specialists to resolve delayed, lost, or disputed deliveries and make refund decisions end-to-end, with built-in safety controls and carrier verification.

Enables MCP-capable agents to retrieve a tamper-evident decomposition of x402 network growth on Base and to place $399 human-reviewed endpoint or wallet audits paid over the x402 rail, without moving funds itself.

PayCheck is an MCP server that checks a planned payment before an agent pays.

Keyless MCP exchanger for AI agents — pay an exact amount to one deposit address, EMC delivered to any address. USDT(Tron) > EMC. Live at https://swap.emercoin.com/mcp

An MCP server for the SmartBill Cloud API. It lets an MCP client issue and manage Romanian invoices, proformas and payments, download document PDFs, and read VAT rates, series and stock levels.

Verified pay-per-call catalog: factual checks of x402 agent services for AI agents.

MCP server that lets a chatbot browse eSIM plans, sign in, prepare quotes, and execute wallet or card purchases on an existing eSIM platform, with safe typed tools.

Enables agents and developers to check x402 endpoints, assess scores and wallet risks, authorize payments with spending rules, and report outcomes before an agent pays.

MCP server that gates API calls to AI agents using proof-of-work (free) or Lightning payment (3 sats), providing challenge, verify, and status tools for per-call authentication without accounts.

MCP server for x207: multilateral netting of x402 agent payments on NEAR testnet. Read circles, epochs and clearing reports; opt-in tools join a circle and pay with signed vouchers.

Enables agents to discover and call thousands of live agent tools with known prices, claim escrowed tasks, and settle payments via x402.

Enables AI agents to draft AP-style press releases from a product URL and publish them to a public newsroom page, or distribute them across a newswire to hundreds of news, TV and radio sites, with status tracking for wire orders. Paid calls are settled per request in USDC on Base via x402 from the user's own wallet, defaulting to quote-only mode with spend caps and confirmation tokens.

Enables running a local MCP server for Poland's KSeF (Krajowy System e-Faktur) e-invoicing system, so invoice data stays on the user's own machine rather than passing through an intermediary service. It currently exposes only a diagnostic server_info tool, with invoice search and retrieval tools still to come.

Hand a secret to another agent as an encrypted, pay-per-read token delivered exactly once, leaving no copy behind. Also pre-flights an x402 endpoint before your agent pays it. Runs locally over stdio and encrypts in your own process, so there is no hosted version to hand your plaintext to.

Enables MCP-capable agents to search the curated gold-402 directory of x402 services, probe any endpoint for valid 402 payment terms, and optionally purchase a human editorial verdict for a resource.

This is an MCP server for the BillingServ API. Once it's set up, your AI assistant can look up customers, invoices, orders, packages, and reports straight from your BillingServ installation

Enables coding agents to create and look up crypto payments over stdio, returning checkout links, payment statuses, paged payment lists, and receivable currencies, with real payments gated behind an explicit opt-in environment flag.