# portcullis

> portcullis — routsom-portcullis. Use this tool when you need to secure and monitor interactions with untrusted tools, providing identity, isolation, and audit capabilities. It solves problems related to protocol translation and security gatekeeping, allowing for safe communication with external tools. The portcullis gateway accepts untrusted tool connections as input and outputs audited, isolated, and translated protocol interactions.

Canonical page: https://skillsregistry.net/skills/routsom-portcullis  
JSON: https://api.skillsregistry.net/v1/skills/routsom-portcullis

## Description

An open-source MCP gateway you can put in front of untrusted tools — identity, isolation, audit, and protocol translation in one Apache-2.0 binary. Lower the gate on untrusted tools.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** scanned
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** Apache-2.0
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/routsom/portcullis)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "routsom-portcullis"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/routsom-portcullis` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/routsom-portcullis/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt