"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
Matching Connector Tools:
Malaysian SME accounting, e-Invoice and payroll — with an MCP server your AI works through. 51 tools: your AI reads the live books (P&L, balance sheet with server-computed period comparison, agings, cash and tax position), drafts every document type including adjusting journals, proposes bank classifications, stages a whole migration (chart of accounts, contacts, products, opening balances, historical documents) and even the workspace setup — and checks its own queue: what it filed, what you approved, what you rejected and why. It can never post: every entry waits for the owner's approval in Taokeh, most of it one tap on the /go page. RM29/month on every plan, included in the 14-day trial. Endpoint: taokeh.my/mcp
webPosto ERP (management for gas stations and convenience stores) via session capture with your auth
Sales force and rep ERP on Mercos via the official API. List orders, customers, products, price tabl
CIGAM ERP (management for industry, retail and franchises) via session capture with your authorizati
Tiny (Olist Tiny) e-commerce ERP, one of the most used by online stores and marketplace sellers in B
GestãoClick ERP (business management for SMBs) via the official API: customers, suppliers, products
Gym management (ABC Evo / W12): members, plans, sales, receivables, check-ins, classes and prospect
Business credit risk indicator from a CNPJ, for safer analysis. Platform-hosted, no credentials, pay
Looks up the electronic invoice numbering voidings for a company from the CNPJ and year. Platform-ho
Auftraege, Rechnungen, Material und Zeiten eines Handwerksbetriebs abfragen und pflegen.
Read-only finance and operations controls for AI agents with evidence and safe next actions.
Knowledge base, pricing, FAQ and KSeF 2.0 info for Faktura VAT 2026 (Polish invoicing software).
QuickBooks MCP Pack — query customers, invoices, and accounts via QuickBooks Online API.
ConnectPlug (CPlug) POS and ERP for restaurants, food service and retail, with the full official RES
Financial & accounting management on Omie (Brazil's leading cloud ERP), payables/receivables, financ
Olist Tiny e-commerce ERP (formerly Tiny ERP) with the full official REST API v3, products, stock, o
Conta Azul ERP MCP — sales, customers, finance and NF-e via OAuth 2.0. Read + write, 35 tools.
Microvix retail ERP (Linx, part of the Stone group) for store chains and franchises, via the officia
Bling ERP (SMB and e-commerce management, by Locaweb) via the official v3 API, sales orders, product