Use Insidewell MCP with Windsurf (Devin Desktop)

Insider trading API + MCP: SEC Form 4 buys/sells, cluster buys. Keys $19/mo; 100 free/day.

Remote MCP server (Streamable HTTP), nothing to install. Free: 100 free/day · Paid: Keys $19/mo

Set it up

In the Cascade panel, open the … (Actions) menu and click Open MCP config file in the MCPs section.
Add the server under "mcpServers" with "serverUrl" and save.
Check the MCPs section in Cascade for the server and its tools.
Ask Cascade a question the tools can answer.

Add to ~/.config/devin/mcp_config.json:

{
  "mcpServers": {
    "insidewell-api": {
      "serverUrl": "https://insidewell-api.cybermaxtools.com/mcp?via=use-with-windsurf"
    }
  }
}

With a paid key:

{
  "mcpServers": {
    "insidewell-api": {
      "serverUrl": "https://insidewell-api.cybermaxtools.com/mcp?via=use-with-windsurf",
      "headers": {
        "x-api-key": "YOUR_KEY"
      }
    }
  }
}

Keep this file out of shared folders and repositories if it holds a key.

Where it goes:

~/.config/devin/mcp_config.json (macOS and Linux)
%APPDATA%\devin\mcp_config.json (Windows)

Config format checked 2026-10-09 against Windsurf (Devin Desktop)'s MCP documentation.

Tools you get

Endpoint checked 2026-10-09: https://insidewell-api.cybermaxtools.com/mcp answered an MCP initialize (protocol 2025-06-18) and tools/list with 3 tools, all marked read-only. No key was used and no tool was called.

Tool	What it does	Required inputs
`insider_trades`	Latest insider transactions from SEC Form 4 filings (EDGAR, refreshed about once a minute), newest filed first, up to 100 rows: ticker, insider, role, code (P buy, S sale, ...), shares, price, dollar value, dates and the filing link. Defaults to open-market buys and sales filed in the last 7 days.	none
`cluster_buys`	Companies where 2+ different insiders bought the stock on the open market within 7 days (window, minimum insiders and minimum dollars adjustable), with each insider, total dollars and filing links.	none
`data_status`	When Insidewell last pulled new Form 4 filings from EDGAR and which filed dates it covers.	none

Test the endpoint from a terminal

This lists the tools without a key and without calling any of them:

curl -s https://insidewell-api.cybermaxtools.com/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

If it does not work

Windsurf's documentation (docs.windsurf.com) now redirects to Devin Desktop's at docs.devin.ai; these steps follow that page.
The documented remote field is "serverUrl" (the docs say "url" is also accepted).
The free tier has a daily limit (see the pricing line above); a paid key raises it.

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