living-ui-modify

living-ui-modify is a skill for Claude Code, Codex from CraftOS-dev/CraftBot. It costs 37 tokens per session (1,310 once invoked), scanned B, original, MIT.

Instructions for changing an existing Living UI app, a local web application built with React and PocketBase. It covers adding features, changing the design, fixing bugs, and checking that the app still works.

In plain words
What is it for?
Use it to modify an existing Living UI project, update its interface or data behavior, fix problems, and relaunch it after validation.
Why use it?
It provides a controlled process for understanding the current app and recording requested changes before editing it. This helps prevent undocumented changes and makes it easier to diagnose broken behavior.

Skill for Claude CodeCodex

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/craftos-dev/craftbot/living-ui-modify
Any agent
npx skills add CraftOS-dev/CraftBot --skill living-ui-modify
Clone the repo
git clone --depth 1 https://github.com/CraftOS-dev/CraftBot

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 living-ui-modify

README.md
[![agentmods](https://agentmods.dev/badge/skills/craftos-dev/craftbot/living-ui-modify.svg)](https://agentmods.dev/skills/craftos-dev/craftbot/living-ui-modify)
Your own site
<a href="https://agentmods.dev/skills/craftos-dev/craftbot/living-ui-modify"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/living-ui-modify.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,310 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00037 $0.01310
Opus 5 $0.00018 $0.00655
Sonnet 5 $0.00007 $0.00262
Haiku 4.5 $0.00004 $0.00131

Measured 2d ago against content hash f88859c684df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade B, and why

living-ui-modify scanned grade B with 1 finding 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 2d 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.

Subtle steeringmediumPrompt injection

Instructions that bias recommendations or shape behaviour without the user noticing.

`status: success` — never tell the user a change is live when the relaunch,
skills/living-ui-modify/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Living UI Modify

You are changing an EXISTING app. Everything in the living-ui-creator skill applies (ownership rule, schema/verbs/UI order, kit usage, honesty rule) — this skill covers only what differs.

Step 0: Locate and understand

  1. Find the project: read agent_file_system/workspace/living_ui_projects.json or use the project id/path given in your instruction.
  2. Read the project's LIVING_UI.md (current plan/entities/ops) and reference/requirements.md. Read manifest.json for authMode and port.
  3. If something broke, read the logs FIRST: {project_path}/logs/frontend_console.log and {project_path}/logs/pocketbase.log.
  4. If the request is ambiguous, ask 1 batch of clarifying questions (a FINAL send_message (continue_work=false — the reply wakes the session)).
  5. Record the request in the spec BEFORE editing code: append a dated entry to reference/requirements.md under a ## Changes section (create the section if absent): - 2026-08-05: <the user's request, stated as a checkable capability>. NEVER rewrite the existing sections — they are the delivered contract; ## Changes is append-only. The verifier checks every entry there, so an unrecorded change is an unverified change (and a recorded one can never be silently dropped by a later modify). SUPERSESSION — the one permitted edit to old entries: when the new request REVERSES or REPLACES an earlier ## Changes entry (the user changed their mind, or the old entry demanded an approach the platform now rejects), wrap the stale entry in ~~strikethrough~~ — do not delete it (it stays as history) and do not leave it live (the verifier enforces every unstruck line, and contradictory live entries make the spec unsatisfiable: an app once went STUCK three times because old entries demanded a handler the validation gate forbids while the new entry forbade it — no code could satisfy both). Strike ONLY entries the new request genuinely contradicts, never entries you merely failed to build.

Read the full file on GitHub · 98 lines

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. 2d ago First seen · 98 lines · 37 tokens per session scan B f88859c684df

Subscribe to this mod's changes

living-ui-modify is a skill published in the GitHub repository CraftOS-dev/CraftBot (378 stars, last pushed 2d ago), licensed MIT. It adds 37 tokens to every session and 1,310 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (subtle steering). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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