"Free APIs and services without commercial fees" matching MCP servers:

Enables AI-driven customer support ticket processing, including classification, response generation, and automated email sending and Google Sheets logging.

Enables AI agents to prompt users for input directly within the chat UI using MCP's elicitation capabilities, allowing for interactive multi-turn conversations without leaving the conversation interface.

Lets AI assistants safely explore a Matrix42 instance by discovering web services and the data model, running validated ASQL queries, searching the service desk, and previewing ticket actions — read-only by default and without exposing credentials.

Books professional home cleaning services anywhere in metropolitan France end-to-end (coverage check, firm quote, booking creation, URSSAF "avance immédiate" enrollment, status polling). End users pay only 50% via SEPA direct debit thanks to the URSSAF immediate tax credit advance — no card payment required.

MCP server that authenticates via browser session cookies to access Zendesk's REST API without API tokens, supporting reads and writes with agent permissions.

MCP server for the Crown Town Compost customer portal that lets you check pickups, invoices, and upcoming collections, skip services, report missed pickups, and update account details through natural language.

A Model Context Protocol (MCP) server that connects LLMs to the Zendesk Support & Help Center APIs — with per-user OAuth 2.1 PKCE authentication and fine-grained tool visibility controls.

MCP server providing tools to search Red Hat KCS solutions, retrieve solution details, search cases, and get case details via Red Hat APIs.

Enables AI agents to manage multichannel e-commerce inventory, list products, view orders, and raise support tickets across connected marketplaces via FLUF Connect, without per-marketplace API complexity.

MCP server for disposable email — create inboxes, receive emails, and extract OTP codes. Let your AI agent sign up for services, wait for verification emails, and extract codes autonomously.

MCP server for Claude Desktop that exposes App Store Connect and RevenueCat APIs, enabling indie iOS developers to query portfolio metrics, sales reports, subscriptions, and customer reviews directly in chat.

Connects AI assistants to your Zendesk account with 14 curated tools for managing tickets, users, organizations, and help center articles, running locally with no third-party services.

Salesforce AgentForce as a traversable MCP knowledge graph. 40 nodes covering Einstein Trust Layer, Agent Topics, Actions, Data Cloud, and Resolution Criteria. 11x fewer tokens than RAG. Free: uvx ckg-agentforce

Enables querying a veterinary clinic's services, summary, and availability from live data.

MCP server that connects AI assistants to Perfex CRM via public web forms, enabling lead creation, ticket creation, quote requests, and health checks without API keys.

Provides read-only access to Hostaway PMS data, enabling assistants to answer questions about listings, calendars, reservations, and inbox threads, and generate occupancy, inbox, and completeness reports without writing or sending anything.

Enables AI assistants to interact with JAICP / Conversational Cloud HTTP APIs, covering projects, channels, analytics, text campaigns, CAILA NLP, and Dialer calls through OpenAPI-defined tools.

Official remote MCP server for Lobby, the bilingual AI receptionist. Five free no-auth tools: business phone scripts and IVR menus (English + Mexican Spanish), ElevenLabs agent system prompts, missed-call cost math, and a hire-a-receptionist verdict.

Connects AI assistants to the official Meta WhatsApp Cloud API for managing conversations and sending various message types through natural language. It provides tools for media management, template messages, and real-time webhook processing without the risk of account bans.

Universal MCP server for the Avito API (Russia's largest classifieds marketplace), built for autonomous AI agents to operate an account hands-free — 145 tools across 18 domains (listings, messenger, orders, delivery, promotion, autoload, reviews, analytics). Safe-by-default: dry-run, idempotency, structured errors, confirmation flow.