# Vestige (MCP server)

> Vestige is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Local-first memory for AI agents that reaches backward to find a failure's root cause. It has 645 GitHub stars, is released under the AGPL-3.0 license and runs locally with npx -y vestige-mcp-server.

Vestige is a fail-closed runtime firewall for AI agents. The model proposes, a deterministic gate decides, and every action leaves a receipt. When something breaks, causalwalk finds the real cause.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/samvallad33/vestige |
| GitHub stars | 645 |
| License | AGPL-3.0 |
| Language | Rust |
| Transport | stdio |
| Packages | npm: vestige-mcp-server |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Developer tools |
| Latest release | v4.2.0 (Oct 6, 2026) |
| Last commit | Oct 7, 2026 |
| MCP registry name | io.github.samvallad33/vestige |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "vestige": {
      "command": "npx",
      "args": [
        "-y",
        "vestige-mcp-server"
      ]
    }
  }
}
```

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

### Claude Code

```sh
claude mcp add --transport stdio vestige -- npx -y vestige-mcp-server
```

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

```json
{
  "mcpServers": {
    "vestige": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "vestige-mcp-server"
      ]
    }
  }
}
```

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

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

```json
{
  "servers": {
    "vestige": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "vestige-mcp-server"
      ]
    }
  }
}
```

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

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