"Open-Source MCP Server in Python with PostgreSQL and OAuth 2.0" matching MCP servers:

An MCP server that provides OIDC-protected access to QA MGT OpenAPI data, enabling tools for trainees, orders, products, customers, and recruitment operations.

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 assistants to query Bullhorn CRM data using natural language through direct REST API access with OAuth 2.0 authentication.

Enables LLMs like Claude to interact with Pipedrive CRM data through a standardized interface, providing 22 tools for managing deals, persons, organizations, activities, and more.

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

Enables AI assistants to interact with HubSpot CRM data, providing tools for managing contacts and companies, retrieving activity and conversations, and performing semantic search with vector storage and caching for improved performance.

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

Provides interactive tools to explore AFAS customer data and employee leave information, including bubble charts, leave balance reports, and detailed leave cards.

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

Enables AI agents to manage e-commerce operations (products, carts, clients) through WhatsApp via Chatwoot, using MCP tools for inventory, cart, and customer management.

A safe Python MCP server modeled on a Java reference, providing tools to create and search customers, create pending orders, list customer orders, and run health checks.

MCP server for Apollo.io B2B data discovery and enrichment, enabling company search, people search, contact enrichment, and organization firmographics through Apollo's REST API.

MCP server exposing Baatjie Group's tanOS property OS and sigscheCore signal scheduler through generic CRUD and workflow tools, featuring audit logging, PII redaction, and dependency-aware action planning.

Enables AI assistants to identify and quantify value leaks in organizations using Melt's methodology, providing structured estimates instead of generic vendor lists.

MCP server for the BoondManager API, enabling Claude to search, create, and modify records across 36 domains with 158 tools.

A locally-hosted MCP server enabling AI agents to securely interact with SmartSuite data, with configurable access modes and audit logging.

A production-grade MCP server for Zendesk that provides ticket management, search, user/group operations, and knowledge base access with support for local stdio and remote HTTP transports, authentication via API keys or OAuth, and multi-tenancy.

Enables AI agents to interact with Salesforce through MCP, supporting queries, records, metadata, and bulk operations with flexible OAuth authentication.

Lets Claude read, create, update, and search records in an Airtable base using your own API key.

MCP server for the Rizerve direct booking platform. Enables managing properties, bookings, availability, iCal sync, analytics, and webhooks through AI assistants.