vscode-extension-guide-en

vscode-extension-guide-en is a skill for Claude Code, Codex from lewiswigmore/agent-skills. It costs 64 tokens per session (983 once invoked), scanned A, original, no licence file.

An English guide to building VS Code extensions, which add features to Microsoft’s code editor. It covers setup, editor interface patterns, security, testing, packaging, Marketplace publication, AI customization, and troubleshooting.

In plain words
What is it for?
Use it to scaffold, develop, test, package, publish, and troubleshoot a VS Code extension.
Why use it?
It explains the development and release steps in one place, including security and testing concerns that are easy to overlook.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to scaffold, develop, test, package, publish, and troubleshoot a VS Code extension.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lewiswigmore/agent-skills/vscode-extension-guide-en
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.

Any agent
npx skills add lewiswigmore/agent-skills --skill vscode-extension-guide-en
Clone the repo
git clone --depth 1 https://github.com/lewiswigmore/agent-skills

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 vscode-extension-guide-en

README.md
[![agentmods](https://agentmods.dev/badge/skills/lewiswigmore/agent-skills/vscode-extension-guide-en/github.svg)](https://agentmods.dev/skills/lewiswigmore/agent-skills/vscode-extension-guide-en)
Your own site
<a href="https://agentmods.dev/skills/lewiswigmore/agent-skills/vscode-extension-guide-en"><img src="https://agentmods.dev/badge/skills/lewiswigmore/agent-skills/vscode-extension-guide-en/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for vscode-extension-guide-en

Your own site · 80×15
<a href="https://agentmods.dev/skills/lewiswigmore/agent-skills/vscode-extension-guide-en"><img src="https://agentmods.dev/badge/skills/lewiswigmore/agent-skills/vscode-extension-guide-en.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 983 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00064 $0.00983
Opus 5 $0.00032 $0.00491
Sonnet 5 $0.00013 $0.00197
Haiku 4.5 $0.00006 $0.00098

Measured 12d ago against content hash b7733943811c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

vscode-extension-guide-en 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 12d 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.

skills/vscode-extension-guide-en/SKILL.md · 131 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 131 lines · 64 tokens per session scan A b7733943811c

Subscribe to this mod's changes

vscode-extension-guide-en is a skill published in the GitHub repository lewiswigmore/agent-skills (4 stars, last pushed 4mo ago), with no licence file. It adds 64 tokens to every session and 983 once invoked, about $0.0003 per session on Opus 5. 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 2026-08-31.

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