"RAG (Retrieval-Augmented Generation) MCP Integration for ChatGPT" matching MCP servers:

Multi-provider image generation MCP server that enables image generation from Claude Desktop, Claude Code, or any MCP client using OpenAI, Google Gemini, Stable Diffusion, or a placeholder provider.

Embeds live, interactive Tableau dashboards in ChatGPT, pushing mark selections to the model so questions about specific data points are answered with live queried numbers.

This MCP server provides comprehensive Google Workspace integration (Gmail, Drive, etc.) with multi-user OAuth. Unique features include RAG-powered natural language to Chat card rendering, runtime Jinja2 macro creation, and dynamic tool management.

An MCP server that lets Claude or ChatGPT read, create, and edit mind maps stored in a GitHub repository, with support for local and HTTP transport.

Open Claude integration for Ametller Origen's live catalog, online orders, real cart, and optional offline Gmail tickets.

MCP server for retrieving FAQ and glossary from the hotline.finance insurance service, supporting both stdio and HTTP modes for integration with clients like Cursor, Claude Desktop, and ChatGPT.

Enables browsing and curating posts from Instagram tattoo artists via Business Discovery API, with features like inspiration feed, bookmarking, and preference tracking, optimized for ChatGPT integration.

Full-stack PDF intelligence MCP server for extracting, manipulating, annotating, converting, validating, and RAG-searching PDFs through a unified tool surface and React workbench.

Provides Claude with access to IT Glue documentation and asset management, enabling searching and retrieval of organizations, configurations, passwords, documents, and more.

Enables ChatGPT to delegate coding tasks to Codex running locally on the user's machine, using their ChatGPT sign-in and Codex plan limits without separate API billing. It checks quota limits and returns changed files and command output for review.

MCP server for KnowBe4 — security awareness training, phishing simulation, and user risk management API integration

MCP server for Proofpoint Email Protection - email security, threat intelligence, TAP (Targeted Attack Protection), and email filtering API integration

Enables AI hosts like Claude, ChatGPT, Cursor, Codex, and Copilot to connect to DealDesk for working with cards, quotes, CPQ portfolio, directory, and export.

Enables AI assistants to bulk-check hundreds of brainstormed domain names in a single call, reporting which are available, taken, or reserved along with buy links and prices from multiple registrars. It runs locally via DNS, RDAP, and WHOIS lookups, with optional registrar API keys for confirming availability and premium pricing.

MCP server for creating and editing diagrams using draw.io. Allows generating diagrams from Mermaid or XML, searching shapes, and opening them in draw.io for export.

MCP server that lets agents create, display, and export rich UI widgets (cards, dashboards, charts, forms) inline in conversations, with interactive iframe support in MCP Apps hosts and PNG image fallback for other clients.

Enables generation of chemical structures, reactions, spectra, titration curves, 3D models, and more from natural language or SMILES, using RDKit for offline rendering and supporting formats like PNG, SVG, CDXML, and Anki decks.

Provides real, official public holiday data for ~100 countries with tools to list holidays for a year and check if a specific date is a holiday. Free, no API key required, powered by Nager.Date.

Provides real-time air quality data (US AQI, PM2.5, PM10, ozone, NO2, SO2, CO) for any city via natural language, using free Open-Meteo data and a single tool.

MCP server for creating interactive Vega-Lite data visualizations that render inline in chat via MCP Apps.