---
title: "Plimsoll"
description: "Self-hosted Go sandbox service for agent-written code that reports the isolation tier of every run, refuses runs below a floor and brokers API calls without exposing credentials."
canonical: "https://vibing.inc/library/plimsoll-vg-2569"
category: "AI Skills, Agents & MCP"
subcategory: "Agent safety"
license: "Apache-2.0"
author: "@plimsollmark"
source: "https://github.com/plimsollmark/plimsoll"
---

# Plimsoll
Self-hosted Go sandbox service for agent-written code that reports the isolation tier of every run, refuses runs below a floor and brokers API calls without exposing credentials.
## Facts
- Source: https://github.com/plimsollmark/plimsoll
- Category: AI Skills, Agents & MCP / Agent safety
- Author: @plimsollmark
- Licence: Apache-2.0
- Tags: sandbox, agents, security, go, self-hosted
## Why it's a gem
Makes sandbox strength a checkable value on every result, not a datasheet promise.
---
Listed in The Vibeary: https://vibing.inc/library/plimsoll-vg-2569 · JSON: https://vibing.inc/api/public/library/gems/plimsoll-vg-2569