verify

verify is a skill for Claude Code from jxsuite/jx. It costs 28 tokens per session (463 once invoked), scanned A, original, MIT.

A browser-based procedure for checking changes in Jx Studio from startup through the user interface. It uses a development server and Chrome DevTools to open a project, inspect files, and verify editor behavior.

In plain words
What is it for?
It helps verify project loading, file-tree navigation, editor tabs, and other studio interactions in a real browser.
Why use it?
It checks the real rendered application instead of relying only on source-code tests or assumptions about the interface.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit It helps verify project loading, file-tree navigation, editor tabs, and other studio interactions in a real browser.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jxsuite/jx/verify
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 jxsuite/jx --skill verify
Clone the repo
git clone --depth 1 https://github.com/jxsuite/jx

Made for: Claude Code.

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 verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/jxsuite/jx/verify/github.svg)](https://agentmods.dev/skills/jxsuite/jx/verify)
Your own site
<a href="https://agentmods.dev/skills/jxsuite/jx/verify"><img src="https://agentmods.dev/badge/skills/jxsuite/jx/verify/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 verify

Your own site · 80×15
<a href="https://agentmods.dev/skills/jxsuite/jx/verify"><img src="https://agentmods.dev/badge/skills/jxsuite/jx/verify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 463 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00028 $0.00463
Opus 5.5 $0.00011 $0.00185
Sonnet 5.5 $0.00006 $0.00093
Haiku 4.5 $0.00003 $0.00046

Measured 11d ago against content hash ab6b3b3484d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

verify scanned grade A 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

1. Dev server: `bun run dev` at the repo root serves on port 3000 (often already running; its watcher rebuilds the parent studio bundle on save). Check with `curl -s -o /dev/null -w "%{http_code}" http://localhost:3000/p
packages/studio/.claude/skills/verify/SKILL.md · 16 lines

What it actually says

Verifying studio changes in a real browser

  1. Dev server: bun run dev at the repo root serves on port 3000 (often already running; its watcher rebuilds the parent studio bundle on save). Check with curl -s -o /dev/null -w "%{http_code}" http://localhost:3000/packages/studio/index.html. Canvas-side changes (src/canvas/*) additionally need bun run build in packages/studio — the iframe bundle is prebuilt and NOT watched.
  2. Open http://localhost:3000/packages/studio/index.html via the Chrome DevTools MCP (mcp__chrome-devtools-nixos__*), then seed and enter a project:
    • localStorage.setItem("jx-studio-recent-projects", JSON.stringify([{ name: "examples", root: "examples", timestamp: <ms> }])), reload.
    • Click the "Recent projects" toolbar button → the "examples" menu item.
  3. The left file tree is plain DOM (.file-tree-item with .file-tree-name), but it is NOT exposed in the a11y snapshot — find/click nodes via evaluate_script. Quick Open (⌘P button) types-then-Enter is flaky under MCP; prefer the tree.
  4. The editor tab strip is .tab-strip (child of #tab-strip), tabs are .tab-strip-tab with .tab-strip-label. It is the overflow-x: auto scroll container; read/write scrollLeft directly.
  5. Synthetic events via evaluate_script (new WheelEvent(...), el.click()) exercise the real lit handlers — the app does not check isTrusted. Note an app-level ancestor handler calls preventDefault() on ctrl+wheel (zoom), so test per-element handlers with bubbles: false when isolating.
  6. Default MCP viewport is 780px wide; resize_page to ~1400px for readable screenshots and to keep CDP clicks from missing off-viewport targets.
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. 11d ago First seen · 16 lines · 28 tokens per session scan A ab6b3b3484d8

Subscribe to this mod's changes

verify is a skill published in the GitHub repository jxsuite/jx (7 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 463 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-02.

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