verify-ui-change SKILL.md skillA
verify-ui-change from reticlehq/reticle is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add reticlehq/reticle/verify-ui-change@v3.9.0Pins v3.9.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- reticlehq/reticle
- Path
skills/verify-ui-change/SKILL.md- Versions recorded
- 19
- Latest version
- v3.9.0, committed Oct 29, 2026
- First version recorded
- Aug 21, 2026
- Size
- 5,587 bytes
- Repository stars
- 1,249
- License
- a license file GitHub does not identify
Check that a change to a web app actually works in the running app before calling it done. Drives the real page and returns a pass/fail verdict with the request that fired, the state that moved, and the file:line to fix. Use after editing a component, a form, a route, or an API call; when you have said "fixed" but have not opened the app; when the user asks "does it actually work?"; or when a change looks right on screen and you cannot prove it.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Verify the change in the running app
You edited something a user can see. Nothing is proven until the real app has done it and something other than the DOM agrees.
This uses **Reticle**, which embeds a dev-only SDK in the user's running app and exposes it as `reticle_*` MCP tools. No screenshots, no browser download for the verify loop, no dev server of its own.
## 1. Are the tools here?
```
reticle_session({ action: "list" })
```
- **A session comes back** → go to step 2.
- **Tools do not exist** → Reticle is not installed. Ask the user first: `init` changes package.json, the lockfile and the build config. If they agree, run `RETICLE_INSTALL_SOURCE=npx_skill npx @reticlehq/server@latest init`, then keep going without the tools: fix every `⚠` it printed, start the project's own dev script in the background if nothing is serving the app, and open it with `npx @reticlehq/server open <the url the dev server is serving>`. Only once the app is running and connected, ask for the one thing you cannot do yourself: a client restart, so it picks up the MCP server. Stopping at the `init` command leaves the user with config files and an uninstrumented page. Full setup is in the…
…Read the whole file at its exact version.
How to install
mdr add reticlehq/reticle/verify-ui-change@sha256:3c03a5dfd03999d3The line at the top of this page pins the label v3.9.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_dyvkjo2iobig6qta)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 19 versions of this file, between Aug 21, 2026 and Oct 29, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v3.9.0 latest | 2026-10-29 | f2e07e0 | 5,587 B | A | view · diff |
| v3.8.2 | 2026-10-26 | f8a40d5 | 5,587 B | A | view · diff |
| v3.8.1 | 2026-10-26 | a6b11ca | 5,587 B | A | view · diff |
| v3.8.0 | 2026-10-25 | 68dd8a1 | 5,587 B | A | view · diff |
| v3.7.0 | 2026-10-09 | 4019204 | 5,363 B | A | view · diff |
| v3.6.0 | 2026-10-07 | c08be48 | 5,363 B | A | view · diff |
| v3.5.0 | 2026-10-01 | 14085e6 | 5,363 B | A | view · diff |
| v3.4.0 | 2026-09-30 | 2685d9a | 5,363 B | A | view · diff |
| v3.3.0 | 2026-09-30 | 6cbaaa3 | 5,363 B | A | view · diff |
| v3.3.0 | 2026-09-29 | d5e59d8 | 5,339 B | A | view · diff |
| v3.3.0 | 2026-09-25 | 0b8afcc | 5,267 B | A | view · diff |
| v3.2.0 | 2026-09-23 | d400c5d | 5,267 B | A | view · diff |
| v3.1.0 | 2026-09-18 | 5d475e0 | 5,267 B | A | view · diff |
| v2.14.0 | 2026-09-09 | f3be3a9 | 5,193 B | A | view · diff |
| v2.13.1 | 2026-09-02 | 96d872c | 5,193 B | A | view · diff |
| v2.13.0 | 2026-09-02 | a6ee238 | 5,193 B | A | view · diff |
| v2.12.0 | 2026-09-02 | 9814709 | 5,193 B | A | view · diff |
| v2.9.0 | 2026-08-22 | 3330030 | 5,192 B | A | view · diff |
| v2.9.0 | 2026-08-21 | 9d5de92 | 4,804 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5587 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
reticlehq/reticle · 1,249 stars · license a license file GitHub does not identify · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dyvkjo2iobig6qta GET https://markdownregistry.com/api/v1/resolve?ref=reticlehq/reticle/verify-ui-change GET https://markdownregistry.com/api/v1/blob/3c03a5dfd03999d325403c6665feddc6b459c8e85f50ab52be293e867ec18653
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.