What is buildable-web-builder?

A guide for building local-first web prototypes with Next.js, TypeScript, Tailwind CSS, and React components from a saved app specification. Next.js is a framework for building web applications.

Use it to generate or adapt Buildable web prototypes, check planning gates, and edit the selected starter project.

It keeps implementation tied to the approved plan and selected design references instead of loading unrelated templates or inventing a different structure.

buildable-web-builder — Skill for Claude Code and Codex by suntay44: A guide for building local-first web prototypes with Next.js…

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.

agentmods

npx agentmods add skills/suntay44/buildable-plugin-skills/web-builder

Any agent

npx skills add suntay44/buildable-plugin-skills --skill web-builder

Clone the repo

git clone --depth 1 https://github.com/suntay44/buildable-plugin-skills

Made for: Claude Code, Codex.

Or install buildable, the plugin that ships this one along with the rest of its 4 skills, 7 commands, 1 MCP server.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/suntay44/buildable-plugin-skills/web-builder.svg)](https://agentmods.dev/skills/suntay44/buildable-plugin-skills/web-builder)

Your own site

<a href="https://agentmods.dev/skills/suntay44/buildable-plugin-skills/web-builder"><img src="https://agentmods.dev/badge/skills/suntay44/buildable-plugin-skills/web-builder.svg" alt="Measured on agentmods" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 600 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00056	$0.00600
Opus 5	$0.00028	$0.00300
Sonnet 5	$0.00011	$0.00120
Haiku 4.5	$0.00006	$0.00060

Measured 6d ago against content hash 70cf74c7f88d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

buildable-web-builder 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 6d 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/web-builder/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Buildable Web Builder Skill

Use this skill to generate or adapt local web prototypes.

Resolve all referenced paths from the Buildable plugin or repository root.

Reference Loading Contract

Mandatory order:

Read the saved planner output first: .buildable/phase-plan.json when present, otherwise buildable-app-spec.json. Use .buildable/phase-plan.toon when present as the compact agent-facing build contract.
Load only appSpec.references.
Load current project files only as needed for the requested change.
Do not load all templates.
Load starter source only for the selected template and only when generating or editing it.

Default Stack

Next.js
TypeScript
Tailwind CSS
shadcn-style component patterns
local/mock data

Workflow

Read the saved plan/app spec from the planner handoff.
Check appSpec.planAudit.checks before editing; treat blocked/failed checks as gates, not suggestions.
If questionsNeeded is true, ask the user before generating.
For fresh starts, prefer buildable generate "<prompt>" when a runnable template exists. Add --out <dir> only when the user requested a specific folder.
Apply appSpec.designSystem for visual tone, density, palette intent, layout rules, component rules, accessibility, and anti-patterns.
Apply appSpec.blocks as reusable micro-template guidance. Selected block docs are references to adapt to the current entity/design system, not generic code to paste blindly.
If appSpec.auth.requested is true, implement the local/mock auth shape first and keep any named provider behind the auth seam.
Load only the references listed in the app spec.
If the template is generic-app, use the selected archetype reference to shape screens and entities instead of loading unrelated templates.
Inspect the local project if generating inside an existing app.
Generate or adapt a complete first-screen prototype.
Keep data local unless the spec explicitly requires otherwise.
Run build/typecheck/lint checks when available.

Read the full file on GitHub · 59 lines

Files

What ships with it

1 file 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.

agents/openai.yaml 233 B

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.

6d ago First seen · 59 lines · 56 tokens per session scan A 70cf74c7f88d

Subscribe to this mod's changes

buildable-web-builder is a skill published in the GitHub repository suntay44/buildable-plugin-skills (53 stars, last pushed 11d ago), licensed MIT. It adds 56 tokens to every session and 600 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 2026-08-30.

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