Architecture

System design, infrastructure patterns, and technical architecture.

4 articles

December 2025

Diagram showing ChatGPT calling the CaptainDNS MCP server and rendering an email authentication audit widget

CaptainDNS · December 7, 2025

Integrate a ChatGPT widget for email authentication auditing with CaptainDNS

Detailed postmortem on wiring a ChatGPT Apps SDK UI component to visualize the CaptainDNS SPF/DKIM/DMARC/BIMI audit.

Architecture diagram showing Auth0, the CaptainDNS MCP server, the backend API and MCP clients

CaptainDNS · December 4, 2025

Auth0 + MCP CaptainDNS: our full postmortem

How we connected Auth0 to our CaptainDNS MCP server: dedicated audiences, PRM, Resource Parameter Compatibility Profile, JWT validation, identity propagation into profiles and api_requests, with optional auth today and protected tools ready for later.

November 2025

Diagram of the CaptainDNS MCP architecture between ChatGPT, the MCP server, and the backend API

CaptainDNS · November 27, 2025

Behind the scenes of the CaptainDNS MCP

How we wired CaptainDNS to AIs through MCP: architecture, HTTP+SSE transport, JSON-RPC, 424 errors, timeouts, and what we learned along the way.

Diagram showing an AI host talking to CaptainDNS through a standardized MCP connector

CaptainDNS · November 21, 2025

An MCP for CaptainDNS?

Before plugging CaptainDNS into AIs, you need to understand what the Model Context Protocol (MCP) is and what it really enables. A short MCP ABC, then first steps for CaptainDNS.