"C# Programming Language Resources" matching MCP connectors:

Reads and validates any European e-invoice a business receives — XRechnung, UBL, CII, ZUGFeRD/Factur-X PDF, Peppol BIS 3, FatturaPA, KSeF FA(3) — into canonical EN 16931 JSON with plain-language fix hints in EN/DE/PL/IT/FR, plus PDF, CSV and DATEV export. Nothing is stored; works without a key on a small daily quota.

Add pay-per-action access to APIs, MCP tools, automations, and digital resources using Bitcoin Lightning L402 or Base USDC x402. AIPP provides payment verification and direct-to-wallet settlement without subscriptions.

PayAI x402 FacilitatorA

network.payai

Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.

Pay x402 resources on U.CASH from your own wallet: view the price, pay on-chain, settle by hash.

Put any API behind x402 in one call, settle USDC on Base, buy credits, find paid resources

Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.

SEFAZ BA: Emitir guia de IPVA, official-source lookup. Platform-hosted, pay per query with prepaid c

Business finance on Conta Simples, bank and card statements, corporate cards (list/block/unblock), c

HubrisBOAuth

pw.hubris.api

Hubris is an OpenAI-compatible LLM gateway for the Russian market, billed in rubles. This MCP server gives agents access to the model catalog (400+ models with ruble pricing), account balance, and chat completions with full parity to POST /v1/chat/completions. Tools: models_list, models_search (filter by capability/price/context length), models_get_pricing, balance_get, chat_complete. Resources: hubris://catalog/models, hubris://docs/quickstart. Prompt: compare-models. Docs: https://hubris.pw/

AI-native ZATCA e-invoicing for Saudi Arabia. Create invoices, issue credit notes, check ZATCA compliance status, and diagnose invoice errors through natural language — from AI solutions or any MCP client. Connect with your own Saudi VAT Pro account (OAuth)

Official MCP server for Zooza — manage class schedules, attendance, bookings, and payments for dance schools, language academies, swim schools, sports clubs, and activity businesses through natural language. 19 tools, works with Claude and ChatGPT.

Read-only Recharge store analytics: metrics, dimensions, and governed queries in plain language.

Invoicing, time tracking, and billing for freelancers and small firms, run in plain language.