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Develop, build, and test VSCode extensions in this repo. An agent skill from owid/etl.
Install Develop Vscode Extension
$ npx skills add owid/etl --skill develop-vscode-extension -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install owid/etl develop-vscode-extension --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .claude/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .claude/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extensionType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add owid/etl --skill develop-vscode-extension -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install owid/etl develop-vscode-extension --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .agents/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .agents/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add owid/etl --skill develop-vscode-extension -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install owid/etl develop-vscode-extension --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .cursor/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .cursor/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/owid/etl.git --path .claude/skills/develop-vscode-extension--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add owid/etl --skill develop-vscode-extension -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install owid/etl develop-vscode-extension --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .gemini/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .gemini/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install owid/etl develop-vscode-extensionInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add owid/etl --skill develop-vscode-extension -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .github/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .github/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add owid/etl --skill develop-vscode-extension -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install owid/etl develop-vscode-extension --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/owid/etl.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/develop-vscode-extension .opencode/skills/develop-vscode-extension && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "develop-vscode-extension" agent skill from https://github.com/owid/etl/tree/master/.claude/skills/develop-vscode-extension into .opencode/skills/develop-vscode-extension/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-vscode-extension", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
develop-vscode-extension- GitHub stars
- 158
- Token cost
- ~438 tokens
- SKILL.md length
- 158 words
- Files
- 1
- Skills in repo
- 35
- Repo updated
- First seen
- Licence
- MIT
At a glance
Develop, build, and test VSCode extensions in this repo. An agent skill from owid/etl.
- Works in 4 steps: Compile: cd vscode_extensions/ && npm… → Package: npx @vscode/vsce package --out… → Install: code --install-extension… → …
- Editing extension source code
- SKILL.md covers Extension locations, Build & install workflow, Verifying installed code and Common pitfalls
- Calls npm and npx
What it does
Develop Vscode Extension is an agent skill from owid/etl. Develop, build, and test VSCode extensions in this repo. Use when editing extension source code, compiling TypeScript, packaging .vsix files, or installing extensions for testing.
Its SKILL.md is about 440 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Data & Analytics. It works with Visual Studio Code, TypeScript and npm. The repository describes itself as: A compute graph for loading and transforming OWID's data. The licence is MIT.
When your agent uses it
- Editing extension source code
- Compiling TypeScript
- Packaging .vsix files
- Installing extensions for testing
Example prompts
- “/develop-vscode-extension”
Requirements
- Node.js
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Compile: cd vscode_extensions/ && npm run compile
- Package: npx @vscode/vsce package --out install/-.vsix
- Install: code --install-extension install/-.vsix --force
- Tell user to reload: Cmd+Shift+P → "Developer: Reload Window"
What it can do on your machine
Read from SKILL.md and the folder at commit 69ab20e. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npmnpx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm and npx, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Develop Vscode Extension loads about 438 tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 158 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from owid/etl at commit 69ab20e, republished under its MIT licence (© owid). 158 words, ~438 tokens.
Download SKILL.mdSave it as
.claude/skills/develop-vscode-extension/SKILL.md (or your agent's skills folder).- name
- develop-vscode-extension
- description
- Develop, build, and test VSCode extensions in this repo. Use when editing extension source code, compiling TypeScript, packaging .vsix files, or installing extensions for testing.
- metadata.internal
- true
- metadata.owner
- Marigold
VSCode Extension Development
Extension locations
Extensions live in vscode_extensions/<name>/. Each has:
src/extension.ts— main source codedist/extension.js— compiled output (esbuild)install/<name>-<version>.vsix— packaged extensionpackage.json— manifest with activation events, commands, config
Build & install workflow
CRITICAL: VSCode runs the installed .vsix from ~/.vscode/extensions/, NOT the dist/ in the repo. After every code change you MUST:
- Compile:
cd vscode_extensions/<name> && npm run compile - Package:
npx @vscode/vsce package --out install/<name>-<version>.vsix - Install:
code --install-extension install/<name>-<version>.vsix --force - Tell user to reload:
Cmd+Shift+P→ "Developer: Reload Window"
Just running npm run compile is NOT enough — the user will still see old behavior.
Verifying installed code
To check what code is actually running:
# Check installed extension has your changes
grep "some_unique_string" ~/.vscode/extensions/<publisher>.<name>-<version>/dist/extension.jsCommon pitfalls
- esbuild watch mode:
npm run compilemay start a watcher that blocks. This is fine for compilation but you still need to package + install. - Version conflicts: If the installed
.vsixversion matches, VSCode may cache. Use--forceflag on install. - Extension host: Changes only take effect after "Developer: Reload Window".
© owid, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/develop-vscode-extension of owid/etl.
Open the folder on GitHubat commit 69ab20e
Compare with similar skills
Develop Vscode Extension next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Develop Vscode Extension this skillowid/etl | 158 | — | ~438 | Automated safety check: Pass | MIT | |
| Prepare Rslint npm Releaseweb-infra-dev/rslint | 460 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Pricing Data Pipelinejqknono/coding-plans-for-copilot | 138 | — | ~263 | Automated safety check: Notes | MIT | |
| Vscode Extensionmicrosoft/aspire | 6.3k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Deploycyanfish-x/tellux | 207 | — | ~1.1k | Automated safety check: Notes | MIT | |
| MCP Server BuildershareAI-lab/learn-claude-code | 78k | 5 repos | ~1.2k | Automated safety check: Pass | MIT |
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Questions about Develop Vscode Extension
What does Develop Vscode Extension do?
Develop, build, and test VSCode extensions in this repo. An agent skill from owid/etl. Develop Vscode Extension is an agent skill from owid/etl. Develop, build, and test VSCode extensions in this repo.
When should I use Develop Vscode Extension?
Develop Vscode Extension fits situations like: editing extension source code; compiling TypeScript; packaging .vsix files; installing extensions for testing.
How do I install Develop Vscode Extension in Claude Code?
Run `npx skills add owid/etl --skill develop-vscode-extension -a claude-code`. Or copy the skill folder (.claude/skills/develop-vscode-extension in owid/etl) into .claude/skills/develop-vscode-extension in your project. Claude Code loads it when a task matches its description.
How do I install Develop Vscode Extension in Codex?
Run `npx skills add owid/etl --skill develop-vscode-extension -a codex`. Or copy the skill folder (.claude/skills/develop-vscode-extension in owid/etl) into .agents/skills/develop-vscode-extension in your project. Codex loads it when a task matches its description.
Can I use Develop Vscode Extension in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add owid/etl --skill develop-vscode-extension -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/develop-vscode-extension, .gemini/skills/develop-vscode-extension, .github/skills/develop-vscode-extension and .opencode/skills/develop-vscode-extension in your project.
What does Develop Vscode Extension need to run?
Going by SKILL.md and its folder, Develop Vscode Extension needs the command-line tools its instructions call (npm and npx). Our summary lists: Node.js.
Does Develop Vscode Extension access the network?
SKILL.md contains no URLs. Its commands use npm and npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Develop Vscode Extension safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Develop Vscode Extension use?
Develop Vscode Extension is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Develop Vscode Extension use?
About 438 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Develop Vscode Extension?
Skills that share tags, products or a category with Develop Vscode Extension: Prepare Rslint npm Release (web-infra-dev/rslint, 460 stars), Pricing Data Pipeline (jqknono/coding-plans-for-copilot, 138 stars), Vscode Extension (microsoft/aspire, 6.3k stars) and Deploy (cyanfish-x/tellux, 207 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Develop Vscode Extension?
owid (a GitHub organization) maintains it in owid/etl, which has 158 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on October 7, 2026.
Source: owid/etl on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.