Add Agentzia remote MCP server

[stoyan-stoyanov]

MCP Server Information

Server Name: Agentzia
Public distribution repository: https://github.com/stoyan-stoyanov/agentzia-plugins
Documentation: https://www.agentzia.dev/docs
Endpoint: https://www.agentzia.dev/mcp

Agentzia simulates buyers across ChatGPT, Claude, Gemini, and Grok and returns evidence about why AI assistants recommend competing products and what to improve on public landing pages.

This adds a hosted remote server using Streamable HTTP and browser OAuth. Dynamic tool discovery is enabled, with tools.json set to [] as required for remote entries. No Docker image is needed. The public distribution package is MIT licensed; the hosted research engine is operated separately by Morphologic AI Inc. under its service terms. Contact: agentziadev@gmail.com.

Validation and reviewer notes

• Public MCP endpoint and OAuth metadata checked; the server requires authentication.
• Official MCP Registry record published: io.github.stoyan-stoyanov/agentzia, version 1.0.0.
• YAML and remote-entry structure checked against the contributor documentation.
• The plugin's Codex installation smoke test and Claude manifest validation pass.
• Docker Desktop OAuth/gateway testing and task validate were not run locally: this publishing environment has no Go/Docker runtime. Please do not interpret metadata validation as a completed Docker end-to-end test.
• No reviewer credentials have been shared. Reviewers can use the public sign-up and OAuth flow; an account has complimentary research credits. New studies consume one credit per selected assistant. Read-only get_credits and list_runs can verify the connection without starting research.

This submission follows the documented remote-server path. The public repository contains connection manifests and a workflow skill, not the hosted service implementation.