"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.

Read-only, PII-masked MCP server for querying data federated through DuckDB — list sources/tables, inspect schemas, and run SQL across Postgres, MySQL, SQLite, Snowflake, BigQuery, Excel, and files, governed per source/table/column by a charter.yaml contract. Snowflake, BigQuery, Excel, and files, governed per source/table/column by a charter.yaml contract.

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.

Enables users to manage contacts, deals, follow-ups, activities, pipeline summaries, and outreach drafts stored in a local JSON file, with every write requiring an explicit preview and confirmation before it is applied. It operates without network access and never sends messages.

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.

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.

Enables MCP clients to read-only inspect a Twilio Segment workspace's sources, destinations, tracking plans, and functions through the Public API without making changes.

Enables creating and managing user profiles with interactive elicitation capabilities that prompt users for missing required information. Demonstrates MCP's elicitation feature by validating profile data and requesting additional details when fields are incomplete.

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

A Machine Conversation Protocol server that enables AI assistants to manage Google Contacts and search Google Workspace directories, providing tools for listing, creating, updating, and deleting contacts within your Google account.

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.

Provides comprehensive access to People Data Labs' data models and search capabilities, enabling enrichment of person and company profiles, multi-criteria searches, and autocomplete functionality through a Model Context Protocol interface.

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.

A Model Context Protocol server that enables AI assistants like Claude to interact directly with Attio CRM data, supporting operations for companies, people, lists, and tasks through natural language queries.

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.

Provides comprehensive access to HubSpot's CRM API, enabling management of contacts, companies, deals, engagements, and associations with support for batch operations and advanced search capabilities.

Provides standardized access to HubSpot CRM API for managing contacts, companies, deals, leads, engagements, and associations with support for batch operations and advanced search capabilities.

Provides standardized access to HubSpot's CRM API for managing contacts, companies, deals, engagements, and other CRM data through comprehensive CRUD operations, batch processing, and advanced search capabilities.

Enables executing SQL queries against Salesforce Data Cloud from Cursor, with tools to list tables and describe table structure.

Connects AI assistants and developer tools to a workspace so they can inspect pipelines, schemas, metrics, profiles, audiences, documentation, and service status, and perform approved control-plane actions such as managing audiences and transformations or triggering syncs.

Integrates with the Tomba.io API to provide email discovery, verification, enrichment, phone lookup, and company research capabilities through standardized MCP tools, resources, and prompts.

Enables natural language interaction with Iterable marketing platform data, allowing users to query campaigns, templates, and perform actions via AI assistants.

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.

Connects Claude Code to the theLeadRouter lead routing platform, enabling lead management, routing, and reporting via API.

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

Real-time CRM intelligence for Claude and other AI clients — map corporate ownership hierarchies, verify entity names and registered addresses, and detect duplicate records, directly in chat. No manual lookups, no spreadsheets, no messy data.

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.