base44-sandbox

A set of instructions for developing Base44 applications in Base44's remote cloud sandbox. It covers development conventions and does not handle deployment or pushing changes.

In plain words
What is it for?
Use it to develop and test Base44 apps remotely, including work involving entities, backend functions, and the Base44 SDK.
Why use it?
It provides a defined remote environment for development while keeping production deployment actions outside its scope.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add base44/skills
agentmods
npx agentmods add plugins/base44/skills/base44-sandbox
Clone the repo
git clone --depth 1 https://github.com/base44/skills

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

base44-sandbox scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/base44-sandbox/.claude-plugin/plugin.json · 15 lines

What it actually says

{
  "name": "base44-sandbox",
  "version": "1.0.0-beta.1",
  "description": "Develop a Base44 app remotely in Base44's cloud sandbox; conventions only, no deploy/push.",
  "author": {
    "name": "base44",
    "url": "https://base44.com"
  },
  "homepage": "https://docs.base44.com",
  "repository": "https://github.com/base44/skills",
  "license": "MIT",
  "keywords": ["base44", "sandbox", "remote-dev", "mcp", "entities", "backend-functions"],
  "skills": ["./skills/base44-remote-dev/", "./skills/base44-sandbox/", "./skills/base44-sdk/", "./skills/base44-troubleshooter/"]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 15 lines scan A d0b8ebb0378b

Subscribe to this mod's changes

base44-sandbox is a plugin published in the GitHub repository base44/skills (88 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.