execution/ui-executor

execution/ui-executor is a skill for Claude Code, Codex from dynos-fit/dynos-work. It costs 31 tokens per session (177 once invoked), scanned A, original, MIT.

A coding worker that builds user-interface pieces such as pages, controls, interactions, and visual styles from a written specification.

In plain words
What is it for?
Use it to implement or review front-end work, including keyboard use, responsive layout, data-driven behavior, and visible state changes.
Why use it?
It helps catch broken loading, empty, error, and success states that can be missed when checking only how a page looks.

Skill for Claude CodeCodex

Part of the dynos-work plugin — 18 skills, 38 agents shipped together

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/dynos-fit/dynos-work/ui-executor
Any agent
npx skills add dynos-fit/dynos-work --skill ui-executor
Clone the repo
git clone --depth 1 https://github.com/dynos-fit/dynos-work

Made for: Claude Code, Codex.

Or install dynos-work, the plugin that ships this one along with the rest of its 18 skills, 38 agents.

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 execution/ui-executor

README.md
[![agentmods](https://agentmods.dev/badge/skills/dynos-fit/dynos-work/ui-executor.svg)](https://agentmods.dev/skills/dynos-fit/dynos-work/ui-executor)
Your own site
<a href="https://agentmods.dev/skills/dynos-fit/dynos-work/ui-executor"><img src="https://agentmods.dev/badge/skills/dynos-fit/dynos-work/ui-executor.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 177 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.

ModelPer sessionOnce invoked
Fable 5 $0.00031 $0.00177
Opus 5 $0.00015 $0.00088
Sonnet 5 $0.00006 $0.00035
Haiku 4.5 $0.00003 $0.00018

Measured 4d ago against content hash 81b118223b23, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

execution/ui-executor 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 4d 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/execution/ui-executor/SKILL.md · 20 lines

What it actually says

dynos-work: execution/ui-executor

Spawn the ui-executor agent with the user's prompt as the instruction.

Ruthlessness Standard

  • Do not let the executor ship a pretty surface that leaves broken states, missing feedback, or dead interactions underneath.
  • If the task affects state, loading, empty, error, or success behavior, the agent must check each visible outcome.
  • Do not accept screenshot-friendly work that fails keyboard, layout, or data-driven behavior.

What to pass

Pass the user's full prompt verbatim. Do not summarize or sanitize it. Prepend a short hard wrapper that tells the agent to verify actual rendered behavior and state transitions before writing evidence.

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. 4d ago First seen · 20 lines · 31 tokens per session scan A 81b118223b23

Subscribe to this mod's changes

execution/ui-executor is a skill published in the GitHub repository dynos-fit/dynos-work (2 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 177 once invoked, about $0.0002 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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