using-agent-browser SKILL.md skillA
using-agent-browser from ampcode/official-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ampcode/official-plugins/using-agent-browser@git:20261030.3fd8261Pins git:20261030.3fd8261 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ampcode/official-plugins
- Path
skills/using-agent-browser/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261030.3fd8261, committed Oct 30, 2026
- First version recorded
- Sep 28, 2026
- Size
- 15,938 bytes
- Repository stars
- 21
- License
- none declared
Drives the preinstalled agent-browser Chromium in an orb for browser interaction, UI inspection, screenshots, recordings, and web E2E checks. Use before any agent-browser work: covers localhost dev servers, sessions that survive pause/resume, 2x screenshots, hover and touch emulation limits, and known command pitfalls.
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
# Using agent-browser in an orb agent-browser and Chrome for Testing (Chromium) are preinstalled in every orb. Run `agent-browser skills get core --full` first; it is the version-matched reference for commands, refs, sessions, restore, and recording. This skill adds only what the orb environment changes. ## Environment - The browser runs inside the orb. It can open `http://localhost:<port>` dev servers directly. Only the user needs portal URLs, so share the portal URL with the user and never the localhost URL you browsed. - If Chrome is missing, run `agent-browser install`. - For a self-signed HTTPS dev server, pass `--ignore-https-errors` and `--args "--allow-running-insecure-content"` on the first `open`. Prefer an HTTP port when the server offers one. - Launch flags such as `--args`, `--executable-path`, and `--ignore-https-errors` take effect when the session's browser starts. Pass them only on the first `open`, or identically on every command. Passing different flags, or passing `--args` again after commands without it, silently relaunches Chrome, which drops page state and the 2x viewport. To add a flag to a running …
Read the whole file at its exact version.
How to install
mdr add ampcode/official-plugins/using-agent-browser@sha256:1bd9f9b5b09d0b54The line at the top of this page pins the label git:20261030.3fd8261, 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_ln6nnrn7trzjnuak)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Sep 28, 2026 and Oct 30, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.3fd8261 latest | 2026-10-30 | 3fd8261 | 15,938 B | A | view · diff |
| git:20261030.80e4117 | 2026-10-30 | 80e4117 | 16,442 B | A | view · diff |
| git:20261030.56b51c1 | 2026-10-30 | 56b51c1 | 16,276 B | A | view · diff |
| git:20261013.c09c8f6 | 2026-10-13 | c09c8f6 | 15,570 B | A | view · diff |
| git:20261013.af3a771 | 2026-10-13 | af3a771 | 11,849 B | A | view · diff |
| git:20260929.7201b9d | 2026-09-29 | 7201b9d | 10,064 B | A | view · diff |
| git:20260928.0562610 | 2026-09-28 | 0562610 | 10,033 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 (15938 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
ampcode/official-plugins · 21 stars · license none declared · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ln6nnrn7trzjnuak GET https://markdownregistry.com/api/v1/resolve?ref=ampcode/official-plugins/using-agent-browser GET https://markdownregistry.com/api/v1/blob/1bd9f9b5b09d0b54edca8e594744496decacfae71c0255e118dd803ce9690d82
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.