AI Plugin Index
Nexus Cortex
Verified · npm:nexus-cortexMCP server by Spitfire-Products · updated · ★ 0 · 1.8k downloads a week
A headless, multi-provider AI agent harness. One install gives you the `cortex` CLI and HTTP server: npm i -g nexus-cortex. Nexus Cortex is published by npm:nexus-cortex from its verified domain in the official MCP Registry.
Last commit in the past day
Apache-2.0: permissive, fine for commercial use
Clear description, published package or server URL, original repository
Not checked yet. What we check
Install Nexus Cortex
Built from the published package, never by AIclaude mcp add nexus-cortex -- npx -y nexus-cortexRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"nexus-cortex": {
"command": "npx",
"args": [
"-y",
"nexus-cortex"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"nexus-cortex": {
"command": "npx",
"args": [
"-y",
"nexus-cortex"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"nexus-cortex": {
"command": "npx",
"args": [
"-y",
"nexus-cortex"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add nexus-cortex -- npx -y nexus-cortex{
"mcpServers": {
"nexus-cortex": {
"command": "npx",
"args": [
"-y",
"nexus-cortex"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add nexus-cortex npx -y nexus-cortexGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the nexus-cortex block.
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Nexus Cortex: common questions
How do I install Nexus Cortex?
In Claude Code run claude mcp add nexus-cortex -- npx -y nexus-cortex. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Nexus Cortex the official server?
Nexus Cortex is published by npm:nexus-cortex from its verified domain in the official MCP Registry.
Is Nexus Cortex free?
The code is published under the Apache-2.0 licence. The service it connects to may have its own pricing.
Is Nexus Cortex safe to use?
It scores 83 of 100. Grades: maintenance A, licence A, quality C. The security check has not run for it yet. Review the code before you install. How grades work.
What are alternatives to Nexus Cortex?
Similar MCP servers: browser-use, Actionbook, Cline, Scrapling MCP Server.
Does Nexus Cortex work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.