Agent skill

Message List

Build chat, messaging, and AI conversation UIs with @virtuoso.dev/message-list.

No licenceAuto-check passed

Install Message List

skills CLI

$ npx skills add petyosi/react-virtuoso --skill message-list -a claude-code

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

GitHub CLI

$ gh skill install petyosi/react-virtuoso message-list --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/petyosi/react-virtuoso.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/message-list .claude/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .claude/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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/petyosi/react-virtuoso/tree/main/skills/message-list

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 petyosi/react-virtuoso --skill message-list -a codex

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

GitHub CLI

$ gh skill install petyosi/react-virtuoso message-list --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/petyosi/react-virtuoso.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/message-list .agents/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .agents/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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 petyosi/react-virtuoso --skill message-list -a cursor

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

GitHub CLI

$ gh skill install petyosi/react-virtuoso message-list --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/petyosi/react-virtuoso.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/message-list .cursor/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .cursor/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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/petyosi/react-virtuoso.git --path skills/message-list

--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 petyosi/react-virtuoso --skill message-list -a gemini-cli

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

GitHub CLI

$ gh skill install petyosi/react-virtuoso message-list --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/petyosi/react-virtuoso.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/message-list .gemini/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .gemini/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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 petyosi/react-virtuoso message-list

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 petyosi/react-virtuoso --skill message-list -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/petyosi/react-virtuoso.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/message-list .github/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .github/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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 petyosi/react-virtuoso --skill message-list -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 petyosi/react-virtuoso message-list --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/petyosi/react-virtuoso.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/message-list .opencode/skills/message-list && 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 "message-list" agent skill from https://github.com/petyosi/react-virtuoso/tree/main/skills/message-list into .opencode/skills/message-list/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "message-list", 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: message-list
GitHub stars: 6.5k
Token cost: ~4.1k tokens
SKILL.md length: 1,331 words
Files: 29 (incl. references)
Skills in repo: 5
Repo updated: Oct 1, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

Build chat, messaging, and AI conversation UIs with @virtuoso.dev/message-list.

Building a chat
SKILL.md covers Licensing, Core mental model: data…, Common patterns and Imperative API, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Messaging interface

What it does

Message List is an agent skill from petyosi/react-virtuoso. Build chat, messaging, and AI conversation UIs with @virtuoso.dev/message-list. Use this skill when (1) building a chat or messaging interface, (2) streaming AI assistant responses into a conversation, (3) loading older messages when scrolling up, (4) adding scroll-to-bottom buttons or unseen-message indicators, (5) switching between channels/conversations, or (6) any task involving VirtuosoMessageList, VirtuosoMessageListLicense, useVirtuosoMethods, useVirtuosoLocation, scrollModifier, notifyItemsChanged…

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 31 other files, including reference files (for example `references/10.smooth-scrolling.md`, `references/11.testing.md` and `references/15.imperative-data-api.md`).

The repository describes itself as: The most powerful virtual list component for React.

When your agent uses it

Building a chat
Messaging interface
Streaming AI assistant responses into a conversation
Loading older messages when scrolling up

Example prompts

“/message-list”

What it can do on your machine

Read from SKILL.md and the folder at commit b2a02d0. 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 typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- virtuoso.dev
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

Message List loads about 4.1k tokens when it runs, and up to ~38k if it reads all its reference files. Until then it costs about 178 tokens; SKILL.md has 1,331 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~178
When it runs · the whole SKILL.md, loaded when a task matches: ~4.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~38k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,331 words (~4,118 tokens).

“VirtuosoMessageList is a virtualized list purpose-built for human and AI chat: stick-to-bottom behavior, streaming responses that grow without scroll jumps, history prepending that preserves the visual position, and scroll position tracking. Use it instead of plain Virtuoso when building conversation…”

— opening of SKILL.md by petyosi

name: message-list

Outline of SKILL.md

@virtuoso.dev/message-list
Licensing
Core mental model: data updates carry scroll instructions
Scroll modifier reference
Common patterns
Receiving messages (auto-scroll when at bottom)
Sending local messages (force bottom)
Streaming an AI response
Live tail with spliced records
External row state changed size
Loading older messages on scroll-up
Scroll-to-bottom button
Switching channels
Controlled mode recipe
Imperative API
Key props and hooks
Pitfalls
Migration checklist from a plain mapped chat list
References

Read the full SKILL.md on GitHub

Files

SKILL.md and 28 other files (references) in skills/message-list of petyosi/react-virtuoso.

SKILL.md
references/10.smooth-scrolling.md
references/11.testing.md
references/15.imperative-data-api.md
references/19.resize-observer-errors.md
references/2.tutorial/01.intro.md
references/2.tutorial/02.message-list.md
references/2.tutorial/03.loading-older-messages.md
references/2.tutorial/04.scroll-to-bottom-button.md
references/2.tutorial/05.receive-messages.md
references/2.tutorial/06.send-messages.md
references/2.tutorial/07.multiple-channels.md
references/20.scroll-modifier.md
references/21.controlled-mode-recipes.md
references/3.examples/01.messaging.md
references/3.examples/02.ai-chatbot.md
references/3.examples/03.gemini.md
references/3.examples/04.reactions.md
… and 11 more

Open the folder on GitHubat commit b2a02d0

Compare with similar skills

Message List 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.

Message List compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Message List this skillpetyosi/react-virtuoso	6.5k	—	~4.1k	Automated safety check: Pass	None	9 days ago
Messages Opsaffaan-m/ECC	276k	1 repos	~724	Automated safety check: Pass	MIT	yesterday
UI To Vueaffaan-m/ECC	276k	1 repos	~1.2k	Automated safety check: Pass	MIT	yesterday
Expo UI Swift UIsickn33/agentic-awesome-skills	47k	2 repos	~588	Automated safety check: Pass	MIT	yesterday
UIInsForge/InsForge	13k	—	~458	Automated safety check: Pass	Apache-2.0	4 days ago
Control UIopenclaw/openclaw	392k	—	~1.8k	Automated safety check: Pass	MIT	today

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Questions about Message List

What does Message List do?

Build chat, messaging, and AI conversation UIs with @virtuoso.dev/message-list. Message List is an agent skill from petyosi/react-virtuoso.dev/message-list.

When should I use Message List?

Message List fits situations like: building a chat; messaging interface; streaming AI assistant responses into a conversation; loading older messages when scrolling up.

How do I install Message List in Claude Code?

Run `npx skills add petyosi/react-virtuoso --skill message-list -a claude-code`. Or copy the skill folder (skills/message-list in petyosi/react-virtuoso) into .claude/skills/message-list in your project. Claude Code loads it when a task matches its description.

How do I install Message List in Codex?

Run `npx skills add petyosi/react-virtuoso --skill message-list -a codex`. Or copy the skill folder (skills/message-list in petyosi/react-virtuoso) into .agents/skills/message-list in your project. Codex loads it when a task matches its description.

Can I use Message List 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 petyosi/react-virtuoso --skill message-list -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/message-list, .gemini/skills/message-list, .github/skills/message-list and .opencode/skills/message-list in your project.

What does Message List need to run?

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

Does Message List access the network?

SKILL.md names 1 domain. As links in the text: virtuoso.dev. This is read from the text; nothing was executed.

Is Message List 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 Message List use?

No licence was found for Message List or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Message List use?

About 4.1k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 34k tokens, read only when the agent opens those files.

What are the alternatives to Message List?

Skills that share tags, products or a category with Message List: Messages Ops (affaan-m/ECC, 276k stars), UI To Vue (affaan-m/ECC, 276k stars), Expo UI Swift UI (sickn33/agentic-awesome-skills, 47k stars) and UI (InsForge/InsForge, 13k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Message List?

petyosi (a GitHub user) maintains it in petyosi/react-virtuoso, which has 6,466 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 1, 2026.

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

Message List

Install Message List

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

Files

Compare with similar skills

Similar skills

Messages Ops

UI To Vue

Expo UI Swift UI

UI

Control UI

Cost Conversation

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Data Table

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Questions about Message List