Individual skill
stackblitz-common-errors
Diagnose WebContainer startup, isolation, Service Worker, dependency, process, preview, and browser failures from evidence before changing code or headers. Use when a StackBlitz runtime or embed fails, hangs, or behaves differently across browsers. Trigger with "StackBlitz error", "WebContainer failed to boot", or "SharedArrayBuffer error".
plugins/saas-packs/stackblitz-pack/skills/stackblitz-common-errors/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)
- 2,917
- 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
- troubleshooting Declared skill tag
- webcontainers Declared skill tag
- engineering 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 · 4,569 bytesSKILL.mdcore · 4,569 bytesreferences/official-docs.mddoc · 996 bytes
Read excerpt
# WebContainer Failure Triage
## Overview
This skill follows a deterministic diagnosis order: browser capability, served headers, lifecycle ownership, runtime events, process exit, dependency compatibility, and preview behavior. It avoids speculative retries and unsafe header weakening.
## Prerequisites
- A reproducible URL or local command and the affected browser/version
- Permission to inspect application code, response headers, and bounded browser/runtime logs
- A synthetic reproduction when the failing project contains sensitive data
## Tool Discipline
Use `Read`, `Glob`, and `Grep` to find boot calls, headers, runtime events, process handling, and dependency manifests. Use `WebFetch` only for current official StackBlitz or WebContainers documentation. Use `Write` or `Edit` only after the failing layer is identified; never retrieve secrets or full user projects for diagnosis.