control-ui skillB
control-ui is agent-read markdown (skill) from asymmetric-al/core: Build or adapt a local browser/CDP harness to drive and inspect a web, IDE, or Electron UI. Use for local UI verification, screenshots, accessibility snapshots, perf profiles, visual diffs, or reproducing UI bugs..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Control UI Use local browser automation to verify UI behavior with evidence. First reuse the repo's own Playwright, browser, or Electron harness if it exists; otherwise assemble a temporary local harness around the app's dev server or Chromium debug port. ## What It Is Used For - Reproducing UI bugs that depend on real browser focus, keyboard input, scrolling, resizing, or rendering. - Verifying visual or accessibility changes with screenshots and snapshots. - Checking local web, IDE, or Electron behavior before shipping. - Capturing console logs, network logs, CPU profiles, traces, or heap snapshots. - Creating before/after evidence for `verify-this`. ## Setup Pattern 1. Start the app locally using the repo's documented dev command. 2. Discover existing local harnesses: Playwright tests, Cypress specs, Storybook, browser scripts, Electron launch scripts, or snapshot tools. 3. For a web app, connect to the local URL with the existing browser tooling. 4. For Electron/Chromium, enable a remote debugging port when supported. 5. Select the correct page by stable app markers, not by tab order alone. …
Read the whole file at its exact version.
How to install
mdr add asymmetric-al/core/control-ui@git:20260625.a8637f3mdr add asymmetric-al/core/control-ui@sha256:40775510557e07caPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_73on3b4frdgyumiv)
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Versions
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4836 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 script tag
Source
asymmetric-al/core · 383 stars · license AGPL-3.0 · pushed 2026-09-23 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_73on3b4frdgyumiv GET https://markdownregistry.com/api/v1/resolve?ref=asymmetric-al/core/control-ui GET https://markdownregistry.com/api/v1/blob/40775510557e07ca764d32e440813185e52b529be1e4ea15c243118bd7fd4475
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