"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:

Crevio's MCP server lets an agent run a real online business, not just read from one. It exposes a delegation surface (ask_crevio, start_task, wait_for_run, send_message, resolve_approvals) plus code_search and code_execute for calling the full Crevio REST API - products, customers, orders, email, socials, and sites.

Neutral freight reference + validation layer for AI agents: ADR, HS, UN/LOCODE, freight math

Get the best grocery and supermarket prices, price history, and price tracking. Build the best value baskets for what you want.

Live Australian grocery prices from Woolworths, Coles, Aldi and Harris Farm.

Query a live PrestaShop e-commerce store: search the catalog, get product details, real-time prices and stock. Fondouk is an open-source module (MIT) that makes any PrestaShop store speak MCP and UCP — this connector is its public demo store. Read-only, public data only.

Product search and price comparison for AI agents. Search 100M+ products across thousands of retailers by text or image, compare live offers and prices, and turn any merchant URL into structured product data. No API key required to start; add one for unlimited use and affiliate commission.

Buy game keys, gift cards, and subscriptions via x402 USDC on Base. 8 MCP tools, no install.

MCP server for makeup.land — an Israeli professional cosmetics retailer. Catalog tools (list_products with cross-lingual semantic search and ΔE-ranked shade matching that returns shade_match: {hex, delta_e} per product, plus validate_gift_card) work anonymously. Customer-data tools (list_brands, get_customer, get_cart, list_orders, list_payment_links, get_customer_best_deals) need a bearer token issued via shop@makeup.land.

Agentic CRM for service businesses — bookings, customers, WhatsApp, loyalty, invoicing.

Secureship MCP gives AI assistants access to a multi-carrier shipping API covering rate comparison, label generation, package tracking, pickup scheduling, address book management, shipment history, customs documents, and more — across carriers like UPS, FedEx, Purolator, Canpar, and others. Browse 150+ live endpoint schemas, parameters, and auth details — always current, never stale.

AI-powered eSIM recommendation agent for travelers. Provides real-time coverage checks, package search by country, and pricing across 190+ destinations via structured tool calls. Tools available: - list_countries - full list of supported destinations - check_coverage - network operators by country code - search_packages - filter eSIM plans by country - get_package_details - pricing and data specs - create_checkout - generate payment link for purchase No auth required for search tools. Ideal

Multi-carrier shipping functionality with built-in, discounted carrier accounts. Compare rates, generate PDF shipping labels, schedule pickups and track packages in automated way or in your chatbox, no coding required. This is a demo server that is functional with no account needed and no auth. For production use please find our production version.

SupplyMaven supply chain risk management data including manufacturing, port and airport congestion, border, materials and macro indexes

Track prices & price history on any online shop, with alerts and an API

The trust layer of the x402 economy: free conformance checks, attestation, corpus, agent store.

Search classified listings on Malinica, a Serbian free serbian classifieds marketplace.

Read-only tools over an independently vetted catalog of non-toxic home and baby products.

Dimensional weight, parcel fit, landed cost and freight class. 4 of 6 tools free.

Check a product CSV, handles, variant matrices and metafield keys. 4 of 6 free.

Directory and marketplace of local businesses and independent professionals near you.