Agent skill

Open URL

Open URLs and launch apps on Android. An agent skill from mikeyobrien/rho.

MITAuto-check passedMobile

Install Open URL

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .claude/skills && cp -r skills-src/platforms/android/skills/open-url .claude/skills/open-url && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .claude/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .agents/skills && cp -r skills-src/platforms/android/skills/open-url .agents/skills/open-url && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .agents/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/platforms/android/skills/open-url .cursor/skills/open-url && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .cursor/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/mikeyobrien/rho.git --path platforms/android/skills/open-url

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/platforms/android/skills/open-url .gemini/skills/open-url && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .gemini/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .github/skills && cp -r skills-src/platforms/android/skills/open-url .github/skills/open-url && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .github/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add mikeyobrien/rho --skill open-url -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install mikeyobrien/rho open-url --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mikeyobrien/rho.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/platforms/android/skills/open-url .opencode/skills/open-url && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "open-url" agent skill from https://github.com/mikeyobrien/rho/tree/main/platforms/android/skills/open-url into .opencode/skills/open-url/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "open-url", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: open-url
GitHub stars: 372
Token cost: ~480 tokens
SKILL.md length: 97 words
Files: 1
Skills in repo: 35
Repo updated: Oct 1, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Open URLs and launch apps on Android. An agent skill from mikeyobrien/rho.

Opening links in a browser
SKILL.md covers Open a URL in default browser, Open a URL with am start (more…, Open a file with default handler and Launch an app by package name, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Launching specific apps

What it does

Open URL is an agent skill from mikeyobrien/rho. Open URLs and launch apps on Android. Use for opening links in a browser, launching specific apps, or viewing files.

Its SKILL.md is about 480 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile. It works with Android. The repository describes itself as: An AI agent that stays running, remembers across sessions, and checks in on its own. macOS, Linux, Android. Built on Pi. The licence is MIT.

When your agent uses it

Opening links in a browser
Launching specific apps

Example prompts

“/open-url”

What it can do on your machine

Read from SKILL.md and the folder at commit 073a3ee. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Open URL loads about 480 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 97 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~31
When it runs · the whole SKILL.md, loaded when a task matches: ~480

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mikeyobrien/rho at commit 073a3ee, republished under its MIT licence (© mikeyobrien). 97 words, ~480 tokens.

Download SKILL.mdSave it as .claude/skills/open-url/SKILL.md (or your agent's skills folder).

name: open-url
description: Open URLs and launch apps on Android. Use for opening links in a browser, launching specific apps, or viewing files.

Open URLs and Launch Apps

Open a URL in default browser

bash

termux-open-url https://example.com

Open a URL with am start (more control)

bash

am start -a android.intent.action.VIEW -d "https://example.com"

Open a file with default handler

bash

termux-open /path/to/file.pdf
termux-open --content-type image/png /path/to/image.png

Launch an app by package name

bash

# Using monkey (simplest, launches main activity)
/system/bin/monkey -p com.twitter.android -c android.intent.category.LAUNCHER 1

# Using am start (specify exact activity)
am start -n com.android.settings/.Settings

Common app packages

App	Package
Chrome	`com.android.chrome`
Settings	`com.android.settings`
Files	`com.google.android.documentsui`
YouTube	`com.google.android.youtube`
X/Twitter	`com.twitter.android`
Tasker	`net.dinglisch.android.taskerm`

Launch app with specific intent

bash

# Open a specific URL in Chrome
am start -n com.android.chrome/com.google.android.apps.chrome.Main -d "https://example.com"

# Share text to another app
am start -a android.intent.action.SEND -t "text/plain" --es android.intent.extra.TEXT "Hello"

# Open dialer with number
am start -a android.intent.action.DIAL -d "tel:5551234567"

# Open map location
am start -a android.intent.action.VIEW -d "geo:0,0?q=coffee+shops"

List installed packages

bash

pm list packages | grep keyword

Notes

termux-open-url is the simplest option for URLs
termux-open handles files with MIME type detection
am start gives full control over intents and activities
monkey (/system/bin/monkey) is a quick way to launch an app's main activity
All commands work without root

Files

Just SKILL.md in platforms/android/skills/open-url of mikeyobrien/rho.

Open the folder on GitHubat commit 073a3ee

Compare with similar skills

Open URL next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Open URL compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Open URL this skillmikeyobrien/rho	372	—	~480	Automated safety check: Pass	MIT	9 days ago
Compose Multiplatform Patternsmonta-app/ocpp-emulator	180	5 repos	~2k	Automated safety check: Pass	Apache-2.0	yesterday
Phone HarnessShawnPana/phone-harness	3.2k	—	~4.3k	Automated safety check: Pass	MIT	yesterday
Stylesarindamxd/camerax-android	132	4 repos	~2.3k	Automated safety check: Pass	Apache-2.0	7 days ago
Verified Emailarindamxd/camerax-android	132	4 repos	~4.7k	Automated safety check: Pass	Apache-2.0	7 days ago
Argent Metro Debuggerbbplayer-app/BBPlayer	1.2k	—	~3.4k	Automated safety check: Pass	MIT	2 days ago

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Questions about Open URL

What does Open URL do?

Open URLs and launch apps on Android. An agent skill from mikeyobrien/rho. Open URL is an agent skill from mikeyobrien/rho. Open URLs and launch apps on Android.

When should I use Open URL?

Open URL fits situations like: opening links in a browser; launching specific apps.

How do I install Open URL in Claude Code?

Run `npx skills add mikeyobrien/rho --skill open-url -a claude-code`. Or copy the skill folder (platforms/android/skills/open-url in mikeyobrien/rho) into .claude/skills/open-url in your project. Claude Code loads it when a task matches its description.

How do I install Open URL in Codex?

Run `npx skills add mikeyobrien/rho --skill open-url -a codex`. Or copy the skill folder (platforms/android/skills/open-url in mikeyobrien/rho) into .agents/skills/open-url in your project. Codex loads it when a task matches its description.

Can I use Open URL in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mikeyobrien/rho --skill open-url -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/open-url, .gemini/skills/open-url, .github/skills/open-url and .opencode/skills/open-url in your project.

What does Open URL need to run?

SKILL.md names no scripts, command-line tools or credentials: Open URL is instructions for the agent only.

Does Open URL access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Open URL safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Open URL use?

Open URL is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Open URL use?

About 480 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Open URL?

Skills that share tags, products or a category with Open URL: Compose Multiplatform Patterns (monta-app/ocpp-emulator, 180 stars), Phone Harness (ShawnPana/phone-harness, 3.2k stars), Styles (arindamxd/camerax-android, 132 stars) and Verified Email (arindamxd/camerax-android, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Open URL?

mikeyobrien (a GitHub user) maintains it in mikeyobrien/rho, which has 372 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on October 1, 2026.

Source: mikeyobrien/rho on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Open URL

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Open URLs and Launch Apps

Open a URL in default browser

Open a URL with am start (more control)

Open a file with default handler

Launch an app by package name

Common app packages

Launch app with specific intent

List installed packages

Notes

Files

Compare with similar skills

Similar skills

More from mikeyobrien/rho

Related

Questions about Open URL