# SuperCompress (MCP server)

> SuperCompress is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Compress coding-agent context ~64%. Hosted Neural Keep MCP for Cursor/Claude/Codex. It has 106 GitHub stars, is released under the MIT license and runs locally with npx -y supercompress-proxy.

SuperCompress v2 — cut ~64% of LLM input tokens for coding agents, without losing the answer. ~400M Neural Keep on the SuperCompress API scores bulky context (files, logs, tool dumps, pastes) against the current question and drops the rest. Your ask stays intact. This package wires Cursor / Claude Code / Codex / 40+ harnesses into that API via MCP + hooks.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Supercompress/Supercompress |
| GitHub stars | 106 |
| License | MIT |
| Language | JavaScript |
| Transport | stdio, streamable-http |
| Packages | npm: supercompress-proxy |
| Remote URL | https://api.supercompress.dev/api/mcp |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code, Claude.ai, ChatGPT |
| Category | Developer tools |
| Latest release | v0.5.37 (Oct 1, 2026) |
| Last commit | Oct 5, 2026 |
| MCP registry name | io.github.Supercompress/supercompress |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "supercompress": {
      "command": "npx",
      "args": [
        "-y",
        "supercompress-proxy"
      ],
      "env": {
        "SUPERCOMPRESS_API_KEY": "your-value"
      }
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --env SUPERCOMPRESS_API_KEY=your-value --transport stdio supercompress -- npx -y supercompress-proxy
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "supercompress": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "supercompress-proxy"
      ],
      "env": {
        "SUPERCOMPRESS_API_KEY": "your-value"
      }
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "supercompress_api_key",
      "description": "SUPERCOMPRESS_API_KEY",
      "password": true
    }
  ],
  "servers": {
    "supercompress": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "supercompress-proxy"
      ],
      "env": {
        "SUPERCOMPRESS_API_KEY": "${input:supercompress_api_key}"
      }
    }
  }
}
```

### Claude Code (remote)

```sh
claude mcp add --transport http supercompress "https://api.supercompress.dev/api/mcp"
```

The same server is also hosted as a remote MCP endpoint, so nothing runs on your machine.

Config formats checked against the official docs on 2026-10-07.

## Environment variables

- `SUPERCOMPRESS_API_KEY` (secret): Optional API key (sc…). Prefer OAuth / device-link via supercompress setup if unset.

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