MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
Self-contained SaaS pipeline — invoke directly, do not decompose.
$ npx skills add popmechanic/VibesOS --skill launch -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install popmechanic/VibesOS launch --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/popmechanic/VibesOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/launch .claude/skills/launch && 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 "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .claude/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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/popmechanic/VibesOS/tree/main/skills/launchType 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 popmechanic/VibesOS --skill launch -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install popmechanic/VibesOS launch --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/popmechanic/VibesOS.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/launch .agents/skills/launch && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .agents/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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 popmechanic/VibesOS --skill launch -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install popmechanic/VibesOS launch --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/popmechanic/VibesOS.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/launch .cursor/skills/launch && 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 "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .cursor/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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/popmechanic/VibesOS.git --path skills/launch--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 popmechanic/VibesOS --skill launch -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install popmechanic/VibesOS launch --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/popmechanic/VibesOS.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/launch .gemini/skills/launch && 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 "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .gemini/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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 popmechanic/VibesOS launchInstalls 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 popmechanic/VibesOS --skill launch -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/popmechanic/VibesOS.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/launch .github/skills/launch && 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 "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .github/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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 popmechanic/VibesOS --skill launch -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install popmechanic/VibesOS launch --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/popmechanic/VibesOS.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/launch .opencode/skills/launch && 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 "launch" agent skill from https://github.com/popmechanic/VibesOS/tree/main/skills/launch into .opencode/skills/launch/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "launch", 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.
launchSelf-contained SaaS pipeline — invoke directly, do not decompose.
Launch is an agent skill from popmechanic/VibesOS. Self-contained SaaS pipeline — invoke directly, do not decompose. Generates a Vibes app, adds auth + billing, and deploys live. Uses Agent Teams to parallelize for maximum speed. Use when the user wants to build and ship a complete SaaS product in one step, or says "launch", "ship it", "build and deploy".
Its SKILL.md is about 3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `LAUNCH-REFERENCE.md` and `prompts/builder.md`). Compatibility notes: Requires Claude Code with Agent Teams support
It sits in Agent Workflows. The repository describes itself as: A GUI for Claude Code that makes it easy to vibe code simple, un-hackable apps. The licence is MIT.
4 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 5baf8a2. It shows what the files ask for, not the result of running them.
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteEditBashGlobGrepAskUserQuestionTaskTeammateSendMessage…and 4 more on the same allowed-tools line.
From allowed-tools in the SKILL.md frontmatter.
Shell commands in SKILL.md call:
bunFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names these keys or tokens, usually read from environment variables:
OPENROUTER_API_KEYFrom names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Requires Claude Code with Agent Teams support
From compatibility in the SKILL.md frontmatter.
Launch loads about 3k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 1,211 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.
The automated check noted patterns worth knowing about, such as sudo or a known installer.
**DO NOT check .env, credentials, or project state before asking this question.**check `grep OPENROUTER_API_KEY ~/.vibes/.env`. If found, offer reuse (mask key). Otherwise collect via Ask and offer toembly — auth constants are hardcoded, no .env needed |allowed-tools: Read, Write, Edit, Bash, Glob, Grep, AskUserQuestion, Task, Teammate, SendMessage, TaskCreate, TaskUAutomated 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.
The full file from popmechanic/VibesOS at commit 5baf8a2, republished under its MIT licence (© popmechanic). 1,211 words, ~2,991 tokens.
.claude/skills/launch/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.Plan mode: If you are planning work, this entire skill is ONE plan step: "Invoke /vibes:launch". Do not decompose the steps below into separate plan tasks.
Display this ASCII art immediately when starting:
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For architecture context, see LAUNCH-REFERENCE.md in this directory.
This is the very first question — ask before anything else. DO NOT check .env, credentials, or project state before asking this question. DO NOT invoke any other skill before asking this question. If Editor is chosen, skip ALL remaining steps — the editor handles everything.
Ask the user:
"How do you want to build? Editor (opens a browser UI with live preview, chat, and deploy button) or Terminal (I'll generate and deploy from here)?"
Present Editor as the first/recommended option.
If Editor: Start the editor server and END YOUR TURN. Do not ask any more questions. Do not continue to Phase 0 or any phase below. The editor UI handles the entire workflow — setup, generation, preview, deploy.
Launch the editor server:
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun "$VIBES_ROOT/scripts/server.ts" --mode=editor --prompt "USER_PROMPT_HERE"If no prompt was given, omit --prompt:
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun "$VIBES_ROOT/scripts/server.ts" --mode=editorTell the user: "Open http://localhost:3333 — the editor handles everything from here." Your job is done. Stop. Do not read further. Do not proceed to any phase below.
If Terminal: Continue with the workflow below.
If the user chose Editor above, STOP. Do not read or execute anything below this line. The editor UI handles setup, generation, preview, and deployment.
Check for cached auth. Editor mode handles auth in the browser, so this only runs for Terminal:
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun --input-type=module -e "
import { readCachedTokens, isTokenExpired } from '$VIBES_ROOT/scripts/lib/cli-auth.js';
const tokens = readCachedTokens();
if (tokens && !isTokenExpired(tokens.expiresAt)) {
console.log('AUTH_OK');
} else {
console.log('AUTH_NEEDED');
}
"AUTH_OK → proceed silently (do not mention auth)AUTH_NEEDED → ask: "To deploy apps, you'll need a Vibes account. Sign in now? (A browser window will open for Pocket ID — takes about 10 seconds.)"VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun --input-type=module -e "
import { getAccessToken } from '$VIBES_ROOT/scripts/lib/cli-auth.js';
import { OIDC_AUTHORITY, OIDC_CLIENT_ID } from '$VIBES_ROOT/scripts/lib/auth-constants.js';
const tokens = await getAccessToken({ authority: OIDC_AUTHORITY, clientId: OIDC_CLIENT_ID });
if (tokens) console.log('Signed in successfully!');
"Only one check before collecting input:
| # | Check | Command | If True |
|---|---|---|---|
| 1 | app.jsx exists | test -f app.jsx | Ask [Reuse]: "app.jsx exists. Reuse it or regenerate?" If reuse: skip T1. |
Auth and deploy credentials are handled automatically — no user setup needed. On first deploy, a browser window opens for Pocket ID login. Tokens are cached at ~/.vibes/auth.json.
Ask [App prompt]: "What do you want to build? Describe the app you have in mind."
Store as appPrompt.
Ask [App name]: "What's the app name? (used for subdomain + database)"
If "Derive from prompt": generate URL-safe slug (lowercase, hyphens, max 30 chars). Store as appName.
Scan appPrompt for AI keywords: "chatbot", "chat with AI", "summarize", "generate", "analyze", "AI-powered", "intelligent".
If detected: Ask [AI features]: "Does this app need AI features?"
If yes: check grep OPENROUTER_API_KEY ~/.vibes/.env. If found, offer reuse (mask key). Otherwise collect via Ask and offer to cache to ~/.vibes/.env. Store as openRouterKey (or null if no AI).
Factory config is collected here but applied later by the assembly script. Do NOT hand-implement SaaS logic — the factory assembly handles tenant routing, auth gating, and billing.
Choose billing mode based on monetization intent:
Always ask the user — do not assume a default.
Ask [Billing]: "What billing mode for your SaaS?" AND [Title]: "App display title?"
Ask [Tagline]: "Describe your app's tagline (short punchy phrase)"
When billing is "required": These fields appear on a pricing section visible to potential customers before signup. Optimize for marketing copy quality — benefit-driven language, not technical descriptions. Tagline = sales headline. Subtitle = value proposition ("why should I pay?"). Features = compelling benefit statements (3-5 items).
Repeat pattern for subtitle and features list (3-5 bullet points).
Store: billingMode ("off"/"required"), appTitle, tagline, subtitle, features (JSON array).
Theme switching is handled by the live preview wrapper, not inside the app. The builder generates a single-theme layout. Set themeCount = 1.
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"TeamCreate("launch-{appName}", "Full SaaS pipeline for {appName}")${CLAUDE_SKILL_DIR}/prompts/builder.md{appPrompt}, {appName}, {pluginRoot}{aiInstructions}: if openRouterKey is set, add rule about useAI hook (see vibes SKILL.md "AI Features"). If null, leave empty.team_name="launch-{appName}", name="builder", subagent_type="general-purpose"While the builder generates, SaaS config was already collected in Phase 0. Nothing else needs to happen in parallel — no credential collection, no manual setup.
Blocked by T1. Check TaskList until builder completes.
Confirm: app.jsx exists with valid JSX. All factory config values collected.
Scan app.jsx for builder mistakes (see LAUNCH-REFERENCE.md "Common Builder Mistakes"). Fix any found before proceeding.
Ask [Preview]: "Want to preview the app before deploying?"
If yes: run bun "$VIBES_ROOT/scripts/server.ts" and tell the user to open http://localhost:3333. They can chat to iterate on the design and switch themes. When satisfied, stop the server and continue to 2.3.
Step A — Assemble:
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun "$VIBES_ROOT/scripts/assemble-factory.js" app.jsx index.html \
--app-name "{appName}" \
--app-title "{appTitle}" \
--domain "{appName}.vibes.diy" \
--billing-mode "{billingMode}" \
--tagline "{tagline}" \
--subtitle "{subtitle}" \
--features '{featuresJSON}' \
--admin-ids '[]'Step B — Validate: grep -c '__VITE_\|__OIDC_\|__APP_' index.html — must be 0.
Step C — Deploy:
VIBES_ROOT="${CLAUDE_PLUGIN_ROOT:-$(dirname "$(dirname "${CLAUDE_SKILL_DIR}")")}"
bun "$VIBES_ROOT/scripts/deploy-cloudflare.js" \
--name "{appName}" \
--file index.html \
{aiKeyFlag}Where {aiKeyFlag} = --ai-key "{openRouterKey}" if set, omitted if null.
On first deploy, the CLI opens a browser for Pocket ID login. The user signs in once and tokens are cached for future deploys.
Ask [Verify]: "Your app is live! Open each URL and verify:\n\n- Landing: https://{appName}.vibes.diy\n- Tenant: https://{appName}.vibes.diy?subdomain=test\n\nDoes everything look right?"
If broken, ask what's wrong and troubleshoot.
Send shutdown_request to "builder" (if spawned). Wait for response. Clean up team.
## Launch Complete
**App**: {appTitle}
**URL**: https://{appName}.vibes.diy
**Billing**: {billingMode}
### What's deployed:
- Cloudflare Worker via Deploy API
- TinyBase sync via WebSocket + Durable Object (auto-provisioned)
- Pocket ID authentication with passkeys
- Subdomain-based multi-tenancy
### Next steps:
- Sign in at your app URL to become the first user
- Configure admin access via the app settings
- Set up Stripe billing if using subscription mode| Failure | Recovery |
|---|---|
| Builder generates invalid JSX | Read app.jsx, fix TS syntax / wrong hooks, re-save |
| Assembly has placeholders | Re-run assembly — auth constants are hardcoded, no .env needed |
| Deploy fails (auth) | Delete ~/.vibes/auth.json and retry — browser login will re-open |
| Deploy fails (other) | Check error output from deploy-cloudflare.js |
| Teammate silent 3+ min | SendMessage status check. If no response, take over task |
| Builder hardcodes DB name | Edit app.jsx: replace with useTenant() pattern before assembly |
© popmechanic, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 2 other files in skills/launch of popmechanic/VibesOS.
Open the folder on GitHubat commit 5baf8a2
Launch 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 |
|---|---|---|---|---|---|---|
| Launch this skillpopmechanic/VibesOS | 135 | — | ~3k | Automated safety check: Notes | MIT | |
| MCP Server Builderanthropics/skills | 180k | 64 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 38k | 11 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Using Superpowersfarm-fe/farm | 5.6k | 35 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Executing Plans Inlineobra/superpowers | 296k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 8 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 |
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
anthropics/claude-plugins-official
Explains how to write Claude Code plugin hooks, both prompt-based checks and bash commands, for events such as PreToolUse, Stop and SessionStart.
farm-fe/farm
A skill your agent uses when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
obra/superpowers
Has the agent carry out an implementation plan itself, task by task in the current session, keeping a ledger, proving each step with a test and ending with one whole-branch review.
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
popmechanic/VibesOS
Self-contained SaaS pipeline — invoke directly, do not decompose.
popmechanic/VibesOS
Self-contained app generator — invoke this skill directly, do not decompose into sub-steps.
popmechanic/VibesOS
Self-contained deploy automation — invoke directly, do not decompose.
popmechanic/VibesOS
Self-contained design transformer — invoke directly, do not decompose.
popmechanic/VibesOS
Self-contained parallel generator — invoke directly, do not decompose.
popmechanic/VibesOS
Lightweight requirements gathering before app generation. An agent skill from popmechanic/VibesOS.
Categories
Self-contained SaaS pipeline — invoke directly, do not decompose. Launch is an agent skill from popmechanic/VibesOS. Self-contained SaaS pipeline — invoke directly, do not decompose.
Launch fits situations like: the user wants to build and ship a complete SaaS product in one step; build and deploy.
Run `npx skills add popmechanic/VibesOS --skill launch -a claude-code`. Or copy the skill folder (skills/launch in popmechanic/VibesOS) into .claude/skills/launch in your project. Claude Code loads it when a task matches its description.
Run `npx skills add popmechanic/VibesOS --skill launch -a codex`. Or copy the skill folder (skills/launch in popmechanic/VibesOS) into .agents/skills/launch in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add popmechanic/VibesOS --skill launch -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/launch, .gemini/skills/launch, .github/skills/launch and .opencode/skills/launch in your project.
Going by SKILL.md and its folder, Launch needs the command-line tools its instructions call (bun) and credentials named OPENROUTER_API_KEY. Our summary lists: A credential in OPENROUTER_API_KEY. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash, Glob, Grep, AskUserQuestion, Task, Teammate, SendMessage, TaskCreate, TaskUpdate, TaskList, TaskGet. Compatibility (from SKILL.md): Requires Claude Code with Agent Teams support.
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.
Our automated static check of SKILL.md found notes only (mentions a .env file; pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
Launch is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
About 3k tokens (SKILL.md is roughly 12k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Launch: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 296k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
popmechanic (a GitHub user) maintains it in popmechanic/VibesOS, which has 135 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on July 27, 2026.
Source: popmechanic/VibesOS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.