"A tool for generating and live previewing Mermaid diagrams from code" matching MCP servers:

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

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

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.

Automates Spectrum/Charter ISP account management tasks such as viewing account overview, paying bills, checking outages, and scheduling technician visits via browser automation.

An MCP server that enables AI assistants to automate Cash App payments, balance checks, and transaction management via browser automation.

Deprecated browser-automation MCP server for Venmo, PayPal, and Cash App (withdrawn due to ToS violations, account suspension risk, and credential exposure). Do not use.

Enables AI agents to manage spa/wellness operations via Zenoti API, including appointments, guests, services, and billing.

Create German invoices (§14 UStG) via Claude or any MCP-compatible AI by describing the invoice in natural language.

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.

Enables AI assistants to manage USAA bank and insurance accounts — check balances, view transactions, transfer funds, pay bills, and more — through the Model Context Protocol.

Universal x402 buyer agent — discover, pay for, and call any x402 paid API endpoint from Claude Desktop, Cursor, or Claude Code with automatic USDC payment via AgentCash.

Create free, no-signup invoices from your AI assistant — the create_invoice tool returns a link that opens blankinvoicemaker.com pre-filled, ready to download as a watermark-free PDF.

Merchant-side MCP server for agentbank that lets merchants read their own orders and live Curless wallet balance from an MCP client such as Claude Desktop.

Your agent takes a business live on payments: go_live creates a real merchant account (sandbox + production) the same day; create_checkout returns a payable link. Payments for AI builders, 3.9% flat.

MCP server for a live x402 payment gateway on Base (USDC). Lets AI agents discover, preview for free, then pay per call — with prepaid gasless payments, signed receipts, and delta delivery.

Enables AI agents to integrate Midtrans payments by providing comprehensive documentation, API references, and code examples for 15+ payment methods across 5 languages. Includes tools for generating charge requests, webhook handlers, and searching documentation without requiring API keys.

Enables AI agents to integrate Tunzaa Payments by generating accurate boilerplate code and webhook handlers. Operates in mock mode by default with optional live verification against Tunzaa APIs when credentials are provided.

A production-ready MCP server with 24 tools for Stripe, Twilio, Resend, GitHub, and Slack, plus pre-built workflow prompts and live resources.

Enables API documentation lookup and live API tools for managing Upmind platform resources like brands, products, clients, invoices, and tickets through natural language.

Enables AI coding agents to integrate MONA Pay payments directly from the IDE, including creating VietQR codes, checking transactions, configuring and testing webhooks, verifying HMAC signatures, and generating webhook sample code.