Payments & Billing MCP Servers for Grok Build

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.

Agent wallet and budget management for AI agents

Stablecoin escrow payments the buyer can dispute, with a signed receipt. Pay a wallet or an email.

MCP server integrating with Stripe - tools for customers, products, payments, and more.

CrossingKey MCP for agent commerce, prepaid credits, and bounded paid XKEY validation.

Premium agentic endpoint for chargeback-insurance-pool-mcp.

Premium agentic endpoint for clawback-prevention-sentinel-mcp.

Validate Factur-X, CII & UBL e-invoices free, no key. Generate compliant invoices from JSON.

InvoiceOracle - 10 e-invoicing tools: XRechnung, ZUGFeRD, Peppol, validation, archive.

Scan pasted Stripe webhook/checkout code for common integration bugs.

Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.

Discover and pay for APIs with USDC credits. No wallet, no gas, MCP-native marketplace.

Give your AI agent a spending limit: approval controls and single-use virtual cards.

Create invoices and customers and record payments in BillingEngine from any MCP client.

Premium agentic endpoint for automated-xml-invoicing-mcp.

Find paid APIs, check access policy and price, and route x402 requests. No autonomous spending.

x402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.

Cross-border B2B invoice VAT/GST classification, compliant totals, and Art. 226 invoice PDFs.

Create and manage invoices and customers on Jupiter Invoice (MCP, API-key auth).

Local Ethereum wallet for AI agents on Base and Arc: balances, x402 payments. Keys stay local.

Luxembourg payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.