# ctxfw

Zero-egress AI Agent Firewall: SARA prompt injection defense, AST context pruning & MCP governance.

- Weekly downloads: 339
- GitHub stars: 7
- Health: active
- Repository: https://github.com/heuristicolab/ctxfw
- Registry names: io.github.heuristicolab/ctxfw
- Categories: Dev tools & GitHub, AI models & media, Memory & context
- Snapshot: 2026-10-27

## Install

```sh
uvx ctxfw
```

```json
{
  "mcpServers": {
    "ctxfw": {
      "command": "uvx",
      "args": [
        "ctxfw"
      ]
    }
  }
}
```

Source: https://mcpmorning.com/mcp/heuristicolab-ctxfw/