Best Payment AI Skills & MCP Servers

Voidly Pay SDK — agent-to-agent payments for AI agents. Sign envelopes, settle transfers, run x402 paywalls, verify webhooks.

MCP server for Tebra/Kareo practice management — 45 tools covering patients, appointments, encounters, billing, payments, documents, providers, and FHIR clinical data for AI agents via the Model Context Protocol

MCP server for ArisPay-delegated x402 USDC payments. Use with Claude Desktop, Cursor, or any MCP client — no private keys in your process.

L402 Lightning paywall + Depth-of-Identity score gate for MCP. Two integration shapes: (a) stdio MCP server exposing l402_gate_challenge / l402_gate_verify / l402_gate_score for agent clients; (b) drop-in Express middleware + MCP tool factory that combine

ASG Agent Pay — the banking layer for autonomous AI agents. Multi-chain payments (x402 + MPP), virtual cards, policy engine, and wallet abstraction across 17 networks. The only SDK unifying Coinbase x402 and Stripe MPP protocols.

MCP server for GoldBean - 10 core paid APIs for AI Agents via x402 micropayments. Crypto price, weather, search, image-gen, code, AI chat and more. Pay-per-call with USDC on Base.

MCP server for APIMesh — 76 x402-payable tools for AI agents (74 APIs + wallet usage + spend caps). Covers web vitals, security headers, SEO audits, email security and verification, tech-stack detection, brand assets, redirect chains, indexability, brand

CLI for Xenarch — non-custodial x402 MCP server for AI agents. Claude, Cursor, LangChain and CrewAI pay HTTP 402–gated APIs with USDC on Base L2.

MCP server for agent payments ecosystem intelligence. Pay per query via x402.

MCP Server para la API products-payment-refacil

MCP server that turns PowForge pow-captcha into agent auth. Charge AI agents per-call without accounts: PoW solve = free tier, Lightning payment = paid tier. Three tools: challenge, verify, status. Stdio + HTTP Streamable transports, stdlib only — no MCP

22 x402 pay-per-call utility tools for AI agents — scrape, validate, embed, store, moderate, notify, convert, prevent loops. No accounts, no API keys. USDC on Base via the x402 protocol.

Shared TypeScript types and x402 payment-flow utilities for @xenarch/agent-mcp — Xenarch's non-custodial x402 MCP server.

Non-custodial x402 MCP server for AI agents. Lets Claude, Cursor, LangChain and CrewAI pay for HTTP 402–gated APIs with USDC micropayments on Base L2. Unlike Cloudflare Pay-Per-Crawl, works on any host and settles agent-to-publisher direct.

AI-powered local-first commerce engine — orders, inventory, payments, policies, and integrations

Scaffold a Voidly Pay-enabled AI agent in one command. Pick a template (paid MCP server, Hono x402 endpoint, FastAPI x402 endpoint, or zero-code universal proxy) and you're running in under 60 seconds.

The runtime security layer for AI agent commerce. Drop-in CLI + MCP server — blocks hallucinated purchases and keeps card credentials out of agent context. It only takes 0.1% of hallucination to drain 100% of your wallet.

MCP server for UtilsForAgents with eight paid x402 utility tools plus one free feedback tool, with Base or Solana payer support.

Cinderwright Discovery Hub MCP Server - cross-protocol agent payments search engine. 1,551 services across x402, MPP, and Lightning.

MCP server with 600+ AI-agent tools for invoicing, payroll, booking, accounting, CRM, payments, tax filing (incl. T2 corporate), churn off-ramps, and firm client management. Works with Claude, ChatGPT, Gemini, Cursor, and any MCP client.

Wise (TransferWise) Personal API MCP server — read-only: profiles, balances, rates, transfers, recipients

Model Context Protocol server for digitalcalculator.info financial calculators. v0.3.0 ships 9 calculator tools (mortgage monthlyPayment, compound-interest futureValue, retirement401k projection, Social Security estimatedBenefit, paycheck netPay, IRA cont

MCP server for interacting with SumUp

Payment layer for AI agents. One MCP, five protocols, thousands of paid APIs your agent can call.