web-stack-planner

web-stack-planner is a skill for Claude Code, Codex from 0x-Professor/Agent-Skills-Hub. It costs 24 tokens per session (601 once invoked), scanned A, original, Apache-2.0.

A planning skill that collects a web project's requirements and technology choices in a standard project-config.json file.

In plain words
What is it for?
Use it to choose the frontend, backend, database, styling system, integrations, and deployment target for a new or existing web project.
Why use it?
It gives later web-building steps a shared description of the project instead of relying on incomplete or inconsistent decisions.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present. Also seen: mentions Codex.

Good fit Use it to choose the frontend, backend, database, styling system, integrations, and deployment target for a new or existing web project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/0x-professor/agent-skills-hub/web-stack-planner
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 0x-Professor/Agent-Skills-Hub --skill web-stack-planner
Clone the repo
git clone --depth 1 https://github.com/0x-Professor/Agent-Skills-Hub

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 web-stack-planner

README.md
[![agentmods](https://agentmods.dev/badge/skills/0x-professor/agent-skills-hub/web-stack-planner/github.svg)](https://agentmods.dev/skills/0x-professor/agent-skills-hub/web-stack-planner)
Your own site
<a href="https://agentmods.dev/skills/0x-professor/agent-skills-hub/web-stack-planner"><img src="https://agentmods.dev/badge/skills/0x-professor/agent-skills-hub/web-stack-planner/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 web-stack-planner

Your own site · 80×15
<a href="https://agentmods.dev/skills/0x-professor/agent-skills-hub/web-stack-planner"><img src="https://agentmods.dev/badge/skills/0x-professor/agent-skills-hub/web-stack-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 601 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 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 $0.00024 $0.00601
Opus 5 $0.00012 $0.00300
Sonnet 5 $0.00005 $0.00120
Haiku 4.5 $0.00002 $0.00060

Measured 9d ago against content hash ab752a4b0bb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

web-stack-planner 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/stack_planner.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/web-stack-planner/SKILL.md · 96 lines

What it actually says

Web Stack Planner

Objective

Capture a complete web project brief and produce a validated project-config.json that all downstream web-builder skills consume.

Required Workflow

  1. Ask the user for project name, project type, target audience, authentication needs, and whether any codebase already exists.
  2. Present frontend framework choices:
    • React
    • Next.js
    • Vue
    • Nuxt
    • SvelteKit
    • Angular
    • Astro
    • plain HTML/CSS/JS
  3. Present backend/API choices:
    • Node.js/Express
    • FastAPI
    • Django
    • Laravel
    • Go/Gin
    • Rails
    • Supabase Edge Functions
    • serverless-only
  4. Present database choices:
    • PostgreSQL
    • MySQL
    • MongoDB
    • SQLite
    • Supabase
    • PlanetScale
    • Turso
    • Redis (as cache)
    • Firebase
  5. Present CSS/design system choices:
    • Tailwind CSS
    • Shadcn/ui
    • Chakra UI
    • Material UI
    • Ant Design
    • Mantine
    • DaisyUI
    • vanilla CSS
  6. Ask if they need integrations for auth, payments, email, file storage, and i18n:
    • Auth: Clerk, Auth.js, Supabase Auth, custom JWT
    • Payments: Stripe, Paddle, LemonSqueezy
    • Email: Resend, SendGrid
    • Storage: S3, Supabase Storage, Cloudflare R2
  7. Ask deployment target:
    • Vercel
    • Netlify
    • Fly.io
    • Railway
    • Render
    • AWS
    • GCP
    • Azure
    • DigitalOcean
    • Cloudflare Pages
  8. Run scripts/stack_planner.py to validate and write the canonical project-config.json.

Execution

python skills/web-stack-planner/scripts/stack_planner.py --input <brief.json> --output <out.json> --format json

Output

  • project-config.json
  • Script result file (json, md, or csv) with status, summary, artifacts, and details

References

  • references/tools.md
Files

What ships with it

3 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. 9d ago First seen · 96 lines · 24 tokens per session scan A ab752a4b0bb3

Subscribe to this mod's changes

web-stack-planner is a skill published in the GitHub repository 0x-Professor/Agent-Skills-Hub (10 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 24 tokens to every session and 601 once invoked, about $0.0001 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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