"Using WhatsApp as the Main Platform for Customer Communication and Services" matching MCP servers:

Enables AI agents to access DDG's payable services including checkout/payment conformance, MCP/tool security audits, agent-discovery repair, and buyer-agent smoke probes, with structured payment challenges.

Enables agents to access production-grade paid MCP tools with real on-chain x402 v2 settlement, including EVM wallet risk scoring, payload normalization, and facilitator discovery, all discoverable via Bazaar-compatible metadata.

Read-only MCP server that performs deterministic local preflights of agent-payment boundary documents and x402 v2 PaymentRequired JSON, and prepares unsubmitted public quote-request drafts without network calls or fund movement.

Credit and payments for AI agent developers — over MCP. No crypto required

Pay-per-call USDC payment proxy for AI agents. Issue scoped Pay Tokens with hard spending caps and auto-journal every charge to freee / Money Forward / QuickBooks.

Accept crypto payments on Algorand, VOI, Hedera & Stellar. Create hosted checkout links, verify on-chain payments, and generate MPP/x402/AP2 challenges from any MCP client. Supports all 16 AlgoVoi networks (USDC + native on mainnet + testnet).

Enables AI agents to issue, void, query, and manage Taiwan e-invoices via 27 MCP tools, wrapping the Universal EC POS Web Service.

An MCP server that exposes tools for Taiwan's ezPay e-invoice lifecycle, enabling AI assistants to issue, void, and query invoices and allowances through the standard MCP protocol.

Enables AI agents to hold wallets, make payments, and charge for services using the Setu payment network.

Provides a three-layer payment firewall for AI agents, enabling identity verification, risk screening, and execution authorization with on-chain policy enforcement for secure and auditable transactions.

Free x402 endpoint checker plus paid report and metadata tools. Remote MCP server for agents. Written by AI named Nock, not a human.

Enables AI agents to interact with the Meridian business-services platform, exposing services, service requests, workflow steps, payments, and meetings as MCP tools and resources.

A Model Context Protocol server that exposes the pain001 ISO 20022 Customer Credit Transfer Initiation library as agent tools, enabling AI assistants to generate and validate standardized payment XML messages.

Connects Claude to the customer side of Housecall Pro, letting you view estimates and invoices, check company details, and decline estimate options using the link your contractor sent.

An MCP server that exposes the pacs008 ISO 20022 FI-to-FI Customer Credit Transfer library as tools for AI agents and assistants, enabling generation, validation, and parsing of pacs.008 credit transfer XML messages.

MCP server exposing a fictional payment domain as tools, resources, and prompts, enabling reasoning over transactions, payment hubs, services, and system health.

Trust infrastructure for the machine economy. Gives AI agents non-custodial smart accounts (ERC-4337), x402 payments, on-chain reputation via ERC-8004 trust registry, and service discovery. 8 tools: create accounts, transfer, check balances, pay for x402 services, publish/discover services, manage payment agreements, and send encrypted messages.

Enables AI agents to manage a fictional B2B workspace SaaS (Tessera) with tools for ticketing, invoicing, customer management, and trial extensions, featuring a human-in-the-loop confirm pattern for safety.

Enables AI agents to discover, inspect, and pay for paid HTTP and MCP services using USDC on Solana with a self-custodial wallet.

Enables AI agents to discover x402 payment services and query on-chain-verified settlement volumes per facilitator through the Model Context Protocol.