"Testing subscribe functionality on a Python server" matching MCP servers:

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.

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

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.

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

A guide and template for setting up an MCP server with Python and Node.js, integrating with Claude, and extending for Zoho CRM conversational AI.

Stateless Node.js service that exposes Ontraport CRM functionality as structured tools for AI agents via the Model Context Protocol.

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

An archived MCP server providing 14 tools (bant_qualify, ocr_extract, asr_transcribe, etc.) originally built on Python/FastAPI/Cloud Run.

Enables AI agents to safely operate HubSpot CRM contacts, deals, and pipelines via MCP, with caching, idempotency, audit trails, and robust error handling.

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 enrich contacts and build audiences via the YourICP API. Provides tools to set an API token, submit contact lookups by email or LinkedIn URL, and poll for enrichment results.

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

An MCP server for Freshdesk that identifies which tickets actually need a reply, and provides tools to read, draft, and respond to tickets while respecting your account's custom statuses.

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

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.

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

A Model Context Protocol server that enables AI assistants like Claude to interact with Zendesk Support through natural language for searching, creating, updating, and managing tickets.

MCP server for Clay.com API providing people and company enrichment, and Clay table operations.