Connect your AI client via MCP

Endpoint (paste into an MCP client — anonymous, free, no key)

https://mcp.koalcheck.com/mcp

Or copy this and send it to your AI to set it up:

Add the "koalcheck" MCP server to my client and connect. It is a remote Streamable-HTTP server at https://mcp.koalcheck.com/mcp — connect anonymously, no API key or login needed (the free tools work right away). If my client supports a remote/HTTP MCP server directly, just use that URL. If my client config only accepts a local command (e.g. Claude Desktop's mcpServers, which rejects a bare "url"), bridge it with command "npx" and args ["-y","mcp-remote","https://mcp.koalcheck.com/mcp"]. Then tell me to fully restart the client, and list the koalcheck tools you can call. It provides US-equity research tools built on an analyst track-record engine (who has actually been right, priced vs SPY, cross-checked with SEC & FINRA).

Capabilities User guide

← @markminervini

$RTX

BEARISH2026-06-02

Price around the call

↓ 2026-06-02

By horizon✗ miss+16.8%

✗ +3.6%

✗ +6.6%

21d

✗ +16.8%

Original post

Mark Minervini · 2026-06-02

I rarely talk about my short positions, mainly because I short individual stock so infrequently so there are very few, and 99.99% of my wealth from stock trading came from the long side. But I did short $RTX today. Looks very heavy under the 200-day line. Chart broke down and stock can't rally. Looks like it wants lower. As always, I use a stop loss and would not give this trade more than about 8% room on the upside. Shorts can have a tendency to run over the stops on short covering rallies. Generally speaking, I hate shorting.

View on X ↗