run-ux-validation

run-ux-validation is a skill for Claude Code, Codex from stunt-double/stuntdouble-mcp. It costs 23 tokens per session (532 once invoked), scanned A, original, MIT.

A skill for checking a user journey with Stunt Double workflows or checklists. A user journey is a sequence such as signing up, checking out, or completing onboarding.

In plain words
What is it for?
Running end-to-end workflows and quality checklists, polling their results, and reporting failures in areas such as accessibility, performance, or content.
Why use it?
It provides a repeatable way to test user-facing flows and identify failed steps or quality issues before release. Results are reported with pass or fail details.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Running end-to-end workflows and quality checklists, polling their results, and reporting failures in areas such as accessibility, performance, or content.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stunt-double/stuntdouble-mcp/run-ux-validation
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 stunt-double/stuntdouble-mcp --skill run-ux-validation
Clone the repo
git clone --depth 1 https://github.com/stunt-double/stuntdouble-mcp

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 run-ux-validation

README.md
[![agentmods](https://agentmods.dev/badge/skills/stunt-double/stuntdouble-mcp/run-ux-validation/github.svg)](https://agentmods.dev/skills/stunt-double/stuntdouble-mcp/run-ux-validation)
Your own site
<a href="https://agentmods.dev/skills/stunt-double/stuntdouble-mcp/run-ux-validation"><img src="https://agentmods.dev/badge/skills/stunt-double/stuntdouble-mcp/run-ux-validation/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 run-ux-validation

Your own site · 80×15
<a href="https://agentmods.dev/skills/stunt-double/stuntdouble-mcp/run-ux-validation"><img src="https://agentmods.dev/badge/skills/stunt-double/stuntdouble-mcp/run-ux-validation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 532 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 $0.00023 $0.00532
Opus 5 $0.00012 $0.00266
Sonnet 5 $0.00005 $0.00106
Haiku 4.5 $0.00002 $0.00053

Measured 9d ago against content hash 3382b1de25b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

run-ux-validation 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.

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/run-ux-validation/SKILL.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Run UX validation

When to use

  • Before merging changes that affect user-facing flows
  • After deploying to a staging environment
  • When investigating reported UX friction
  • As a pre-release quality gate

Instructions

  1. Find the workspace and available validations:

    • list_workspaces() → identify the target workspace
    • list_workflows(workspace_id) → find journey-level workflow tests
    • list_checklists(workspace_id) → find point-in-time quality checks
  2. Choose what to run:

    • Workflows for end-to-end journeys (signup, checkout, onboarding)
    • Checklists for quality gates (accessibility, performance, content)
    • Run both if doing a full pre-release validation
  3. Trigger runs:

    • run_workflow(workflow_id) → returns a run ID (async)
    • run_checklist(checklist_id) → returns a run ID (async)
    • You can trigger multiple runs in parallel
  4. Poll for results:

    • get_workflow_run(run_id) → check status and step-level results
    • get_checklist_run(run_id) → check status and per-check results
    • Poll every few seconds until status shows complete
  5. Report results:

    • List each workflow/checklist with pass/fail status
    • For failures, include the specific step that failed and what happened
    • Note which actor (persona) encountered the issue
  6. Follow up on failures:

    • list_feedback(project_id) → check for related feedback
    • get_feedback(feedback_id) → read full context on issues
    • update_feedback_status(feedback_id, status: "reviewed") → mark triaged items
    • Suggest code changes or flag for the team

Example output

UX Validation Results — staging (2026-03-28)

Workflows:
  [PASS] Signup → First Project (6/6 steps)
  [FAIL] Checkout Flow (failed at step 4: payment form timeout)
  [PASS] Team Invite (3/3 steps)

Checklists:
  [PASS] Performance (5/5 checks)
  [FAIL] Accessibility (6/8 checks — contrast ratio, focus order failed)

Summary: 2 failures found. Payment form timeout is a blocker.
Recommend fixing before release.

Read the full file on GitHub · 65 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. 9d ago First seen · 65 lines · 23 tokens per session scan A 3382b1de25b0

Subscribe to this mod's changes

run-ux-validation is a skill published in the GitHub repository stunt-double/stuntdouble-mcp (1 stars, last pushed 24d ago), licensed MIT. It adds 23 tokens to every session and 532 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.

Related

Other skills, from other repositories

visual-testing

Visual testing, UI verification, and design comparison using screenshots and Figma integration. Use when the user wants to verify UI appearance, compare with Figma designs, test responsive layouts, check for visual regressions, or validate design implementation.

ironbee-ai/ironbee-devtools-skills · 50 tokens

screen-reader-testing

Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.

wshobson/agents · 39 tokens

qa-test-planner

Generate comprehensive test plans, manual test cases, regression test suites, and bug reports for QA engineers. Includes Figma MCP integration for design validation.

davila7/claude-code-templates · 34 tokens

e2e-testing-patterns

Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging flaky tests, or establishing testing standards.

wshobson/agents · 51 tokens

designing-tests

Designs and implements testing strategies for any codebase. Use when adding tests, improving coverage, setting up testing infrastructure, debugging test failures, or when asked about unit tests, integration tests, or E2E testing.

CloudAI-X/claude-workflow-v2 · 48 tokens

qa/e2e-playwright

A method for writing Playwright end-to-end tests, which automate a browser to verify complete user journeys. It covers setup, reusable page objects, login reuse, API mocking, visual checks, multiple browsers and screen sizes, CI, and debugging.

echoVic/boss-skill · 50 tokens