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

Enables Claude Desktop to answer natural-language questions about customers by exposing search, profile, order history, status filter, and spend statistics tools backed by local mock data, with a single-file swap path to Oracle AI Agent Studio later.

Production-ready MCP server enabling AI assistants to interact with Braze's customer engagement platform, offering 92 tools for user management, messaging, campaigns, analytics, email/SMS, catalogs, and SCIM provisioning.

Enables AI agents to verify email addresses, clean lists, run bulk verification jobs, and manage a Verifly account through natural language, without writing HTTP calls.

MCP server that lets you talk to your GoHighLevel sub-account in plain English, offering six tools to search contacts, list calendars, check free slots, and book appointments with dry-run safety and explicit error messages.

Buyer intelligence for technical founders who sell to enterprises — ICP scoring, persona simulation, competitive positioning, deal classification, and 14 more revenue intelligence tools. 50 free queries/month.

Enables AI-powered analysis of sales call transcripts through natural language queries, allowing users to search conversations, identify objections, and extract insights from customer calls without manually reviewing recordings.

MCP server for HeyMax CRM API, providing read-only tools to query pipelines, services, and other CRM data.

Provides access to Leadpipe's intent and data APIs for topic discovery, audience management, and visitor data lookup. It enables agents to automate lead generation workflows, analyze website topics, and manage tracking pixels through natural language.

An MCP adapter that maps Coffee Company B2B HTTP APIs to MCP tools, allowing AI agents to query member information, benefits, coupons, and payment statuses. It enables seamless integration for AI assistants to manage coffee-related customer assets and loyalty details through natural language.

The VanMoof MCP Server implements the MCP specification to create a seamless connection between AI agents and key VanMoof services like VanMoof customer data, including bike details, VanMoof rider cities, rider preferences and weekly rides.

Integrates with HubSpot CRM APIs via the Model Context Protocol, enabling management of contacts, companies, deals, tickets, notes, engagements, workflows, and more through natural language.

Enables AI assistants to securely interact with the Little Green Light CRM database for tasks like searching constituents, logging gifts, managing groups, and generating reports without third-party middleware.

A Model Context Protocol (MCP) server that provides AI assistants with seamless access to IBM Master Data Management (MDM) services through standardized REST API interactions.

An MCP server for the EaseCation user center that provides admin and user tools to interact with UC backend services.

Enables AI agents to interact with commercetools APIs to manage products, categories, orders, carts, and customer data. It provides a comprehensive set of tools for both read-only and full-access operations through secure authentication methods.

This read-only MCP Server allows you to connect to Bullhorn CRM data from Claude Desktop through CData JDBC Drivers. Free (beta) read/write servers available at https://www.cdata.com/solutions/mcp

Reference MCP server for the AudienceScore protocol: query a vendor's audience score (percent of verified thumbs-up over receipt-gated reviews) and get back a signed, recomputable score manifest an agent can verify without trusting the server.

Enables AI agents to enrich LinkedIn prospect data with current role, company, and experience through MCP or REST, with credit-metered access and free credits.

Enables AI assistants to find and enrich B2B contacts and companies with verified contact details and buying signals using Lusha's API.

Enables AI agents to interact with the Courier notification API, allowing them to send messages, manage profiles, debug deliveries, configure lists, and more through 60 tools.