"Open source MCP (Model Context Protocol) implementations" matching MCP servers:

Production-ready MCP server for Greenhouse ATS that provides comprehensive recruitment tools—screening, pipeline analytics, search, and safe write operations—across read-only, recruiter, and full profiles.

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.

Enables Claude Code to access amoCRM data such as pipelines, deals, contacts, and users via the MCP protocol.

Exposes a professional services pipeline prediction model with tools to score opportunities, validate inputs, and retrieve model metadata such as win probability, fees, and margin.

Production-ready MCP server for Greenhouse ATS with 175 tools for recruiting teams — manage candidates, applications, jobs, interviews, and hiring pipelines. Role-based profiles (full/recruiter/read-only), composite workflow tools for pipeline views, analytics, candidate search, and bulk operations.

MCP server for WeCom customer contact API, enabling LLMs to manage customers, tags, group chats, moments, and mass-send messages.

An open-source Model Context Protocol (MCP) server that connects Claude, ChatGPT, and other AI assistants directly to your Zooza account. Natural language scheduling, attendance tracking, and class management — no dashboard required.

Provides a standardized interface for interacting with Rocketlane's tools and services through the Model Context Protocol, enabling unified API access.

Enables interacting with Hubspot tools and services through a unified API and the Model Context Protocol.

Enables AI assistants to manage GoHighLevel CRM data including contacts, conversations, opportunities, calendars, and forms through MCP tools and resources.

Model Context Protocol server for Kylas CRM lead operations, enabling lead creation, search/filter, and lookup of users, products, and pipelines.

Free, open-source MCP server and CLI for the BaseLinker API, exposing two tools to call any API method and list methods with minimal context cost.

AI-powered lead qualification engine. Ingest leads from any source, auto-enrich with company data, score 0-100 using weighted AI rules, and export to HubSpot, Pipedrive, Google Sheets, CSV, or JSON. 8 MCP tools + 3 resources.

Model Context Protocol server for the Apideck Unified API. Connect any MCP-compatible agent framework to 100+ accounting systems, HRIS platforms, file storage providers, and more through one integration. More information https://www.apideck.com/mcp-server

Read and write CardDAV address books: contacts, groups and photos over the open standard

MCP server for Ashby ATS that enables AI agents to review candidates, read application details, and write evaluation notes through the Model Context Protocol.

A Model Context Protocol server that connects Claude to the HoneyBook client portal, giving you natural-language access to contracts and invoices sent by your wedding vendors.

Free, open-source MCP server that connects Claude to the Shopify Partner API. 25 tools for revenue analytics, churn analysis, retention cohorts, merchant health scoring, conversion funnels, revenue forecasting, and growth velocity.

An open-source MCP server connecting Claude to Filevine practice management platform. Access cases, contacts, documents, notes, tasks, and custom PI data from Claude with automatic rate limiting and audit logging.

A Model Context Protocol (MCP) server that provides access to Modus's RevOps and Sales Insights API for retrieving headcount data, attrition predictions, sales performance metrics, and capacity planning insights.