Vscode Extension Guide En
sickn33/agentic-awesome-skills
Guide for VS Code extension development from scaffolding to Marketplace publication
Scaffold, validate, review, and prepare browser-side SillyTavern UI extensions.
Custom licenceAuto-check passed
Install Sillytavern Extension Dev
$ npx skills add LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install LiarMTTT/TavernWeave sillytavern-extension-dev --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/LiarMTTT/TavernWeave.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sillytavern-extension-dev .claude/skills/sillytavern-extension-dev && 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 "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .claude/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-devType 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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install LiarMTTT/TavernWeave sillytavern-extension-dev --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LiarMTTT/TavernWeave.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/sillytavern-extension-dev .agents/skills/sillytavern-extension-dev && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .agents/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install LiarMTTT/TavernWeave sillytavern-extension-dev --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LiarMTTT/TavernWeave.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/sillytavern-extension-dev .cursor/skills/sillytavern-extension-dev && 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 "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .cursor/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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/LiarMTTT/TavernWeave.git --path skills/sillytavern-extension-dev--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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install LiarMTTT/TavernWeave sillytavern-extension-dev --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LiarMTTT/TavernWeave.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/sillytavern-extension-dev .gemini/skills/sillytavern-extension-dev && 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 "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .gemini/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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 LiarMTTT/TavernWeave sillytavern-extension-devInstalls 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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/LiarMTTT/TavernWeave.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/sillytavern-extension-dev .github/skills/sillytavern-extension-dev && 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 "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .github/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install LiarMTTT/TavernWeave sillytavern-extension-dev --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LiarMTTT/TavernWeave.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/sillytavern-extension-dev .opencode/skills/sillytavern-extension-dev && 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 "sillytavern-extension-dev" agent skill from https://github.com/LiarMTTT/TavernWeave/tree/main/skills/sillytavern-extension-dev into .opencode/skills/sillytavern-extension-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sillytavern-extension-dev", 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
sillytavern-extension-dev- GitHub stars
- 153
- Token cost
- ~1.2k tokens
- SKILL.md length
- 474 words
- Files
- 10 (incl. scripts, references)
- Skills in repo
- 22
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Scaffold, validate, review, and prepare browser-side SillyTavern UI extensions.
- Codex needs to create
- SKILL.md covers Shared communication, Fix the extension boundary, Inspect before changing and Scaffold only when needed, plus 5 more sections
- Runs JavaScript scripts from its folder; calls node
- Inspect an extension manifest
What it does
Sillytavern Extension Dev is an agent skill from LiarMTTT/TavernWeave. Scaffold, validate, review, and prepare browser-side SillyTavern UI extensions. Use when Codex needs to create or inspect an extension manifest, entry module, lifecycle hooks, settings namespace, capability contract, version preflight, or installation smoke plan without installing into a live SillyTavern instance.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 14 other files, including scripts and reference files (for example `agents/openai.yaml`, `references/capability-preflight.md` and `references/extension-contract.md`).
The repository describes itself as: Noncommercial Agent Skills for SillyTavern rolecard engineering.
When your agent uses it
- Codex needs to create
- Inspect an extension manifest
- Lifecycle hooks
- Settings namespace
Example prompts
- “/sillytavern-extension-dev”
Requirements
- Node.js
What it can do on your machine
Read from SKILL.md and the folder at commit d9da0b0. 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
Ships 3 files in scripts/ (JavaScript), which the agent can run.
Shell commands in SKILL.md call:
node
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Sillytavern Extension Dev loads about 1.2k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 85 tokens; SKILL.md has 474 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); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 474 words (~1,208 tokens).
“Apply TW plain-language and guidance rules to user-facing work. Explain terms in context; preserve the user's chosen 新人/入门/熟练/老手 level without inferred changes. 新人 and 入门 receive detailed explanations; every level receives needed and bug explanations unless the user explicitly waives…”
- name
- sillytavern-extension-dev
Files
SKILL.md and 9 other files (scripts, references) in skills/sillytavern-extension-dev of LiarMTTT/TavernWeave.
- SKILL.md
- agents/openai.yaml
- references/capability-preflight.md
- references/extension-contract.md
- scripts/check-extension-capabilities.mjs
- scripts/scaffold-extension.mjs
- scripts/validate-extension-manifest.mjs
- tests/fixtures/extension-spec.json
- tests/fixtures/snapshot.json
- tests/scripts.test.mjs
Open the folder on GitHubat commit d9da0b0
Compare with similar skills
Sillytavern Extension Dev 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 |
|---|---|---|---|---|---|---|
| Sillytavern Extension Dev this skillLiarMTTT/TavernWeave | 153 | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Vscode Extension Guide Ensickn33/agentic-awesome-skills | 47k | 1 repos | ~890 | Automated safety check: Pass | MIT | |
| Scaffoldingdotnet/efcore | 15k | — | ~321 | Automated safety check: Pass | MIT | |
| Browser Extension Launchsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Scaffold Elementremotion-dev/remotion | 63k | — | ~202 | Automated safety check: Pass | Custom licence | |
| Browser Extension Buildersickn33/agentic-awesome-skills | 47k | 2 repos | ~2.3k | Automated safety check: Pass | MIT |
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Questions about Sillytavern Extension Dev
What does Sillytavern Extension Dev do?
Scaffold, validate, review, and prepare browser-side SillyTavern UI extensions. Sillytavern Extension Dev is an agent skill from LiarMTTT/TavernWeave. Scaffold, validate, review, and prepare browser-side SillyTavern UI extensions.
When should I use Sillytavern Extension Dev?
Sillytavern Extension Dev fits situations like: Codex needs to create; inspect an extension manifest; lifecycle hooks; settings namespace.
How do I install Sillytavern Extension Dev in Claude Code?
Run `npx skills add LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a claude-code`. Or copy the skill folder (skills/sillytavern-extension-dev in LiarMTTT/TavernWeave) into .claude/skills/sillytavern-extension-dev in your project. Claude Code loads it when a task matches its description.
How do I install Sillytavern Extension Dev in Codex?
Run `npx skills add LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a codex`. Or copy the skill folder (skills/sillytavern-extension-dev in LiarMTTT/TavernWeave) into .agents/skills/sillytavern-extension-dev in your project. Codex loads it when a task matches its description.
Can I use Sillytavern Extension Dev 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 LiarMTTT/TavernWeave --skill sillytavern-extension-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sillytavern-extension-dev, .gemini/skills/sillytavern-extension-dev, .github/skills/sillytavern-extension-dev and .opencode/skills/sillytavern-extension-dev in your project.
What does Sillytavern Extension Dev need to run?
Going by SKILL.md and its folder, Sillytavern Extension Dev needs JavaScript for the scripts in its folder and the command-line tools its instructions call (node). Our summary lists: Node.js.
Does Sillytavern Extension Dev access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Sillytavern Extension Dev 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Sillytavern Extension Dev use?
Sillytavern Extension Dev has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Sillytavern Extension Dev use?
About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1k tokens, read only when the agent opens those files.
What are the alternatives to Sillytavern Extension Dev?
Skills that share tags, products or a category with Sillytavern Extension Dev: Vscode Extension Guide En (sickn33/agentic-awesome-skills, 47k stars), Scaffolding (dotnet/efcore, 15k stars), Browser Extension Launch (sickn33/agentic-awesome-skills, 47k stars) and Scaffold Element (remotion-dev/remotion, 63k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sillytavern Extension Dev?
LiarMTTT (a GitHub user) maintains it in LiarMTTT/TavernWeave, which has 153 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on October 4, 2026.
Source: LiarMTTT/TavernWeave on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.