---
title: "DealerDirect National Car Inventory MCP: 500k+ Live Vehicles & Shielded Negotiation — Daniel Herrington"
description: "Published on the Official Model Context Protocol Registry: a public Streamable HTTP MCP server indexing 500,000+ live new, used/CPO, and 8,400+ classic/collector vehicles across 1,600+ dealerships in all 50 US states. Exposes itemized dealer fee breakdowns, insurance quote payloads for True Monthly Cost, and zero-PII disposable buyer proxy negotiation."
url: "https://herrington.ai/projects/dealer-direct-mcp/"
markdown_url: "https://herrington.ai/projects/dealer-direct-mcp/index.md"
author: "Daniel Herrington"
date: "2026-10-30"
updated: "2026-10-31"
markdown_tokens: 414
content_signal: "ai-train=yes, search=yes, ai-input=yes"
mcp_endpoint: "https://herrington.ai/mcp"
---
# DealerDirect National Car Inventory MCP: 500k+ Live Vehicles & Shielded Negotiation

- **Category**: Agentic Commerce & MCP
- **Last Updated**: 2026-10-30
- **Tech Stack**: Model Context Protocol, Streamable HTTP, Agentic Commerce, Shielded Proxy Relay, ADF/XML 1.0, Cloud Run, PostgreSQL, TypeScript
- **Canonical Showcase**: https://herrington.ai/projects/dealer-direct-mcp/
- **Live Deployment**: https://registry.modelcontextprotocol.io/v0/servers?search=dealer-direct

## Overview

Published on the Official Model Context Protocol Registry: a public Streamable HTTP MCP server indexing 500,000+ live new, used/CPO, and 8,400+ classic/collector vehicles across 1,600+ dealerships in all 50 US states. Exposes itemized dealer fee breakdowns, insurance quote payloads for True Monthly Cost, and zero-PII disposable buyer proxy negotiation.