vscode: Skill for Claude Code

.github/skills/symbolicate-crash-dump/SKILL.md

symbolicate-crash-dump is a skill for Claude Code, Codex from microsoft/vscode. It costs 74 tokens per session (2,655 once invoked), scanned A, original, MIT.

A guide for turning a native VS Code crash dump into a readable backtrace with method names. A crash dump is a saved record of what a program was doing when it stopped unexpectedly; symbol files map machine addresses to code names.

In plain words
What is it for?
Use it with a .dmp file on macOS or Linux to run electron-minidump and attach the matching Electron, Insiders, or Stable symbol files when needed.
Why use it?
It helps identify the native code involved when the original crash report contains missing method names.

Skill for Claude CodeCodex ✓ vendor

Written for no agent in particular: nothing here depends on one.

This is microsoft/vscode's own configuration. It tells Claude Code and Codex how to work on vscode itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything vscode configures →

About the project

Visual Studio Code is a code editor that supports editing, navigating, understanding, debugging, and extending software projects. Developers use it for the edit-build-debug cycle, and the catalogue add-ons provide skills, instructions, and agents for working within the editor.

microsoft/vscode · 191,470 stars · on GitHub · code.visualstudio.com

Reuse

Borrowing it

Nothing to install: this file belongs to microsoft/vscode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/microsoft/vscode/main/.github/skills/symbolicate-crash-dump/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/microsoft/vscode

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for symbolicate-crash-dump

README.md
[![agentmods](https://agentmods.dev/badge/skills/microsoft/vscode/symbolicate-crash-dump.svg)](https://agentmods.dev/skills/microsoft/vscode/symbolicate-crash-dump)
Your own site
<a href="https://agentmods.dev/skills/microsoft/vscode/symbolicate-crash-dump"><img src="https://agentmods.dev/badge/skills/microsoft/vscode/symbolicate-crash-dump.svg" alt="Measured on agentmods" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,655 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Snyk pass 6 Sept 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 62
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00074 $0.02655
Opus 5 $0.00037 $0.01327
Sonnet 5 $0.00015 $0.00531
Haiku 4.5 $0.00007 $0.00265

Measured 8d ago against content hash 6ef43909ad2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

symbolicate-crash-dump scanned grade A with 1 finding 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

`microsoft/vscode-electron-prebuilt` is a **private** repo — this is why the flow is team-members-only. A plain browser or `curl` link will 404 without auth; download the asset with an authenticated GitHub CLI instead (`
.github/skills/symbolicate-crash-dump/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Symbolicate a Crash Dump

Turn a native VS Code crash dump (.dmp) into a readable backtrace with method names using electron-minidump.

VS Code team members only. Symbol files for internal Electron, Insiders, and Stable builds live in a private-adjacent release repo. A macOS or Linux device is required — electron-minidump does not run on Windows.

Prerequisites

  • A crash dump file (*.dmp). See Creating a crash report below if you don't have one yet.
  • A global install of electron-minidump:
    npm install -g electron-minidump
    
  • For Insiders/Stable symbols, an authenticated GitHub CLI (gh auth status) with access to the private microsoft/vscode-electron-prebuilt repo.

Procedure

1. Run an initial symbolication pass

This generates or refreshes the electron-minidump cache and tells you which symbols are still missing.

electron-minidump crash-file.dmp > symbolicated-output.log

Inspect symbolicated-output.log. Look at the top frames of the backtrace: if a frame names a module (e.g. Electron Framework) but has no method name after it, symbols for that module are required.

Retry on transient download errors. electron-minidump downloads symbols from public symbol servers, so a run can fail on a transient network error (e.g. failed to download ... (code 56) or (code 28)). Successfully downloaded symbols are cached, so simply re-running the same command resumes where it left off. Retrying a few times is expected:

for i in 1 2 3 4 5; do
    electron-minidump crash-file.dmp > symbolicated-output.log && break
    sleep 3
done

2. Get the appropriate symbol files

Match the symbol source to the build that produced the crash:

Build that crashed Symbol files source
Insiders / Stable (internal Electron) microsoft/vscode-electron-prebuilt releases
Code - OSS (OSS Electron) electron/electron releases

Read the full file on GitHub · 181 lines

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. 8d ago First seen · 181 lines · 74 tokens per session scan A 6ef43909ad2c

Subscribe to this mod's changes

symbolicate-crash-dump is a skill published in the GitHub repository microsoft/vscode (191,470 stars, last pushed today), licensed MIT. It adds 74 tokens to every session and 2,655 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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