Individual skill
stackblitz-security-basics
Threat-model a WebContainer or StackBlitz embed across host, runtime, user-code, filesystem, dependency, network, preview, secret, and persistence boundaries. Use when preparing to execute untrusted code, enable private packages, or ship an interactive browser IDE. Trigger with "StackBlitz security review", "secure WebContainers", or "WebContainer threat model".
skills/.curated/stackblitz-security-basics/SKILL.md
Source commit 0500b275e963c027f6b410e8c49c0446945c574e
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 12, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 2,916
- Repository last updated
- Nov 12, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai Repository topic
- automation Repository topic
- claude-code Repository topic
- devops Repository topic
- mcp Repository topic
- ai-agents Repository topic
- anthropic Repository topic
- claude-code-plugins Repository topic
- developer-tools Repository topic
- llm Repository topic
- saas Declared skill tag
- stackblitz Declared skill tag
- security Declared skill tag
- threat-modeling Declared skill tag
- security Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
SKILL.mdcore · 5,132 bytesreferences/official-docs.mddoc · 1,198 bytes
Read excerpt
# WebContainer Security Review
## Overview
This skill produces a repo-grounded threat model and bounded hardening plan. Browser containment reduces host risk, but it does not make user code trustworthy, prevent all network activity, protect secrets mounted into the runtime, or replace host-page CSP and data-governance controls.
## Prerequisites
- A named application, data classification, and intended code/dependency sources
- Identified owners for the host page, runtime lifecycle, auth, preview, persistence, and deployment headers
- Permission to inspect security-sensitive configuration without reading secret values
## Tool Discipline
Use `Read`, `Glob`, and `Grep` to trace input, filesystem, process, dependency, network, preview, auth, CSP, and persistence paths. Use `WebFetch` only for current official StackBlitz or WebContainers documentation. Use `Write` for an approved threat model and `Edit` only for narrow reviewed controls.