"An example MCP for client prototyping in a business context with a public API call" matching MCP servers:

A lightweight MCP server for client relationship management, enabling client tracking, notes, and search via natural language.

Model Context Protocol (MCP) server for Microsoft Dynamics 365 Business Central. Provides AI assistants with direct access to Business Central data through properly formatted API v2.0 calls.

Enables AI assistants to read and modify Microsoft Dynamics 365 Business Central data through the API v2.0, supporting CRUD operations on resources like customers, contacts, and sales orders with Azure CLI or client credentials authentication.

MCP server for Microsoft Dynamics 365 Business Central, enabling AI assistants to perform CRUD operations, query data, and retrieve schemas via Business Central API v2.0.

A production-style MCP server exposing six business tools (web search, database, CRM, email, calendar, analytics) to AI clients via a secure, authenticated interface, with mock mode and a reference agent client.

Enables an AI assistant to query existing business systems through narrow typed tools, stage and confirm gated writes, and verify stated figures against source data with freshness checks.

MCP server for Microsoft Dynamics 365 Business Central that enables AI assistants to access and manage Business Central data via API v2.0, with full CRUD operations and support for Azure CLI or client credentials authentication.

AI-native, self-hostable private business card database for ChatGPT using Remote MCP with Firebase authentication and Cloudflare storage.

Enables AI assistants to look up customers, orders, products, and stock; take role-restricted actions such as creating orders and handling refunds; enforce business rules; and maintain a tamper-evident audit log.

Business Card Watchdog is an installable, user-scoped service for processing large batches of business card images from watched folders. It exposes CLI, API, MCP, and watched-folder surfaces for deterministic orchestration and routing to Google Contacts or Odoo.

A read-only MCP server for Portal.io that enables browsing proposals, users, contacts, and catalog items through secure HMAC-signed API requests.

MCP server for Microsoft Dynamics 365 Business Central that enables AI assistants to query and manage Business Central data via full CRUD operations.

Connects SAP Business One to Claude, ChatGPT, and Copilot, providing 12 MCP tools to read business partners, items, sales orders, invoices, quotations, and delivery notes, and to create sales orders.

Bridges AI assistants to HubSpot CRM via OAuth2.1+PKCE, enabling tool access through OpenClaw or stdio MCP.

An MCP server that provides 40 tools for managing Google Business Profiles, including accounts, locations, verifications, reviews, and performance analytics, enabling AI agents to interact with GBP via REST APIs.

Enables AI agents to pull focused GoHighLevel context before talking to a contact, including contact lookup, timeline summaries, pipeline positions, and appointments, with optional guarded writes. It helps agents brief themselves on a person without exposing raw CRM API noise.

Generates personalized client strategy briefs from a name, and manages client profiles for behavioral intelligence, enabling client-facing professionals to prepare for conversations.

Enables AI assistants to manage Bitrix24 CRM entities, tasks, project kanban boards, and Scrum sprints through an incoming webhook, requiring explicit user confirmation for all write operations.

Exposes native OnlyFans and Fansly access as MCP tools, letting agents read fans, messages, media, earnings, posts, transactions and subscribers across connected creators, with opt-in outbound writes. It also provides CRM tags, smart links, webhooks and bulk exports through a single API key.

A comprehensive Model Context Protocol (MCP) server that provides complete access to the Recharge Storefront API endpoints. Enables AI assistants to manage subscriptions, customers, orders, and billing through a standardized interface.

Provides read-only access to the Planning Center People API, enabling natural language queries for people, households, background checks, and lists.

Enables AI agents to extract structured firmographic data from public LinkedIn company URLs, returning fields like name, industry, size, and headquarters.

FastMCP cloud server enabling AI assistants to manage outbound call campaigns, schedule calls, list agents, and access call data via HTTP.

Enables querying client onboarding status and basic client info (name, family) via two tools, designed for integration with Microsoft Copilot and Teams.

This MCP server simplifies interaction with the ConnectWise Manage API through API discovery, execution, and a fast memory system for efficient workflows.

Enables interaction with the HaloPSA API for managing tickets, clients, assets, and more through natural language commands in Claude Desktop.

Exposes internal company services as LLM-callable MCP tools, enabling AI agents to perform business operations like customer management, order processing, and support ticketing through natural language.

Enables read-only access to InvoiceNinja data, including invoices, expenses, clients, and tax reports, for AI assistants like Claude.

Simulates a multi-tenant customer support backend with tools for profile, order, ticket, and refund management, demonstrating security controls like tenant isolation, role-based access, and input validation.

Connects Claude to Jobber to manage clients, jobs, invoices, quotes, and scheduling through natural language.