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buildable-mobile-builder

buildable-mobile-builder is a skill for Claude Code, Codex from suntay44/buildable-plugin-skills. It costs 58 tokens per session (565 once invoked), scanned A, original, MIT.

A guide for building local-first mobile prototypes with Expo, React Native, TypeScript, and related components from a saved app specification. Expo and React Native are tools for making mobile apps with JavaScript or TypeScript.

In plain words
What is it for?
Use it to generate or adapt Buildable mobile prototypes and apply their layout, accessibility, component, and visual rules.
Why use it?
It keeps mobile implementation aligned with the approved plan and design rules while using local or mock data by default.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the buildable plugin — 4 skills, 7 commands, 1 MCP server shipped together

not rated 53repo 13d ago A scan SkillSpector: pass 58 tokens original MIT

Good fit Use it to generate or adapt Buildable mobile prototypes and apply their layout, accessibility, component, and visual rules.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/suntay44/buildable-plugin-skills/mobile-builder
View source ↗ suntay44/buildable-plugin-skills
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 suntay44/buildable-plugin-skills --skill mobile-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.

agentmods badge for buildable-mobile-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/suntay44/buildable-plugin-skills/mobile-builder.svg)](https://agentmods.dev/skills/suntay44/buildable-plugin-skills/mobile-builder)
Your own site
<a href="https://agentmods.dev/skills/suntay44/buildable-plugin-skills/mobile-builder"><img src="https://agentmods.dev/badge/skills/suntay44/buildable-plugin-skills/mobile-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 565 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00058 $0.00565
Opus 5 $0.00029 $0.00282
Sonnet 5 $0.00012 $0.00113
Haiku 4.5 $0.00006 $0.00056

Measured 8d ago against content hash 581df462495c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

buildable-mobile-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 8d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/mobile-builder/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Buildable Mobile Builder Skill

Use this skill to generate or adapt local mobile prototypes.

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

Reference Loading Contract

Mandatory order:

  1. 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.
  2. Load only appSpec.references.
  3. Load current project files only as needed for the requested change.
  4. Do not load web templates or unrelated mobile archetypes.
  5. Load starter source only for the selected template and only when generating or editing it.

Default Stack

  • Expo
  • React Native
  • TypeScript
  • NativeWind
  • Expo Router when appropriate
  • local/mock data

Workflow

  1. Read the saved plan/app spec from the planner handoff.
  2. Check appSpec.planAudit.checks before editing; treat blocked/failed checks as gates, not suggestions.
  3. If questionsNeeded is true, ask the user before generating.
  4. Apply appSpec.designSystem for visual tone, density, palette intent, touch layout rules, component rules, accessibility, and anti-patterns.
  5. 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.
  6. If appSpec.auth.requested is true, implement the local/mock auth shape first and keep any named provider behind the auth seam.
  7. Load only the references listed in the app spec.
  8. If the template is generic-app, use the selected archetype reference to shape screens and entities instead of loading unrelated mobile templates.
  9. Generate touch-first screens and local state.
  10. Validate navigation, touch targets, and state coverage.
  11. Run buildable review from the selected app workspace when the CLI is available.

Build Order

  1. Create typed entities and local sample data.
  2. Build the first mobile screen around the main daily workflow.
  3. Add navigation only when the screen graph requires it.
  4. Add empty, completed, validation, and confirmation states as appropriate.
  5. Review against the selected mobile quality rubric.

Read the full file on GitHub · 57 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.

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. 8d ago First seen · 57 lines · 58 tokens per session scan A 581df462495c

Subscribe to this mod's changes

buildable-mobile-builder is a skill published in the GitHub repository suntay44/buildable-plugin-skills (53 stars, last pushed 13d ago), licensed MIT. It adds 58 tokens to every session and 565 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.

FrontendMobileReact
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