Agent Browser CLI
vercel-labs/agent-browser
Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking…
Talk with people on Slack — recognize slack- senders and reach them via chat reply
Apache-2.0Auto-check passed
Install Slack
$ npx skills add laude-institute/headlong --skill slack -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install laude-institute/headlong slack --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/slack .claude/skills/slack && rm -rf skills-srcUse ~/.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/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .claude/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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 install https://github.com/laude-institute/headlong/tree/main/skills/slackType 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.
$ npx skills add laude-institute/headlong --skill slack -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install laude-institute/headlong slack --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/slack .agents/skills/slack && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .agents/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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.
$ npx skills add laude-institute/headlong --skill slack -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install laude-institute/headlong slack --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/slack .cursor/skills/slack && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .cursor/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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 https://github.com/laude-institute/headlong.git --path skills/slack--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add laude-institute/headlong --skill slack -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install laude-institute/headlong slack --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/slack .gemini/skills/slack && rm -rf skills-srcUse ~/.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/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .gemini/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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.
$ gh skill install laude-institute/headlong slackInstalls 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).
$ npx skills add laude-institute/headlong --skill slack -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/slack .github/skills/slack && rm -rf skills-srcUse ~/.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/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .github/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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.
$ npx skills add laude-institute/headlong --skill slack -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install laude-institute/headlong slack --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/laude-institute/headlong.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/slack .opencode/skills/slack && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "slack" agent skill from https://github.com/laude-institute/headlong/tree/main/skills/slack into .opencode/skills/slack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "slack", 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
slack- GitHub stars
- 1.2k
- Token cost
- ~831 tokens
- SKILL.md length
- 439 words
- Files
- 1
- Skills in repo
- 10
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Talk with people on Slack — recognize slack- senders and reach them via chat reply
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Slack is an agent skill from laude-institute/headlong. Talk with people on Slack — recognize slack- senders and reach them via chat reply
Its SKILL.md is about 830 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with Slack. The repository describes itself as: An open source agent microharness featuring persistent agency and recursive LLMs. Of bash, by bash, for bash; it's shells all the way down. The licence is Apache-2.0.
Example prompts
- “/slack”
What it can do on your machine
Read from SKILL.md and the folder at commit c43e597. 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
Slack loads about 831 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 439 words of instructions outside code blocks.
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 laude-institute/headlong at commit c43e597, republished under its Apache-2.0 licence (© laude-institute). 439 words, ~831 tokens.
Download SKILL.mdSave it as
.claude/skills/slack/SKILL.md (or your agent's skills folder).- name
- slack
- description
- Talk with people on Slack — recognize slack-* senders and reach them via chat reply
slack
Instructions
A Slack bridge forwards messages between your mind log and the org's Slack workspace. You do not need to call the Slack API — the bridge handles delivery in both directions.
Recognizing Slack messages
Messages from Slack arrive as normal message steps whose from looks like:
slack-U07AB12CD-D09XYZ123— a direct messageslack-U07AB12CD-C09XYZ123-1722400000.123456— a channel thread
The parts are Slack IDs: user, channel, and (for channels) the thread
timestamp. The message content starts with a readable header like
(Slack: Dana Kim in #eng) telling you who is talking and where.
Some senders are other Headlong personas, not people. Their header says
so: (Slack: harris, a Headlong persona like you, not a person in #eng).
Reply to them the same way. Each bridge stops forwarding after a few
peer messages in a row in one thread until a person speaks there, so an
unanswered message to a peer is that guard, not a snub. Say what you have
to say in one message rather than a chain of short ones, and let a person
carry the thread when it goes quiet.
Replying
Reply exactly as you would to any other sender — the bridge delivers it to the right Slack conversation (in-thread for channels, top-level for DMs):
chat reply slack-U07AB12CD-C09XYZ123-1722400000.123456 "On it — deploy is green."Always use the sender's full slack-… name verbatim as the reply target.
Do not shorten it or substitute the person's display name.
Reacting
Add an emoji reaction to the Slack message you are answering. Use the
Slack short name (thumbsup, eyes, +1), not unicode:
chat react slack-U07AB12CD-C09XYZ123-1722400000.123456 thumbsup
chat react --reply-to <inbound-step-id> slack-U07AB12CD-C09XYZ123-1722400000.123456 eyes--reply-to copies that inbound step's source_url so the reaction
lands on the specific message, not just the thread root. Needs the
Slack app's reactions:write scope (reinstall after it lands).
Show full SKILL.md (162 more words)Show less
Following up proactively
To continue a Slack conversation later (e.g. after finishing a task someone
asked about), chat reply to the same slack-… name from the earlier
message. The bridge posts it into that conversation.
Posting to a channel or DMing someone without an earlier message
Two short forms exist for when you are starting the conversation:
slack-C09XYZ123— post top-level in that channelslack-U07AB12CD— DM that person (the bridge opens the DM)
chat send --to slack-C09XYZ123 "Daily papers for today: ..."
chat send --to slack-U07AB12CD "Built the thing you asked about."Slack ids are uppercase; users start with U, channels with C. chat rejects
any other slack-… shape with a non-zero exit, and the bridge writes a
delivery step back to your trajectory for every send, status: delivered
with the permalink or status: failed with the reason. A failed delivery
shows in your recent stream; check it before assuming a message landed.
Formatting
Write normal markdown; the bridge converts it for Slack (bold, links, headings, code blocks). Long messages are split automatically. Prefer concise messages — it is chat, not a report.
© laude-institute, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/slack of laude-institute/headlong.
Open the folder on GitHubat commit c43e597
Compare with similar skills
Slack 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Slack this skilllaude-institute/headlong | 1.2k | — | ~831 | Automated safety check: Pass | Apache-2.0 | |
| Agent Browser CLIvercel-labs/agent-browser | 44k | 24 repos | ~864 | Automated safety check: Pass | Apache-2.0 | |
| Slack GIF Creatoranthropics/skills | 180k | 29 repos | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Code Design Rationale Investigatorcursor/plugins | 11k | 9 repos | ~2.6k | Automated safety check: Pass | None | |
| Electron App Automationvercel-labs/agent-browser | 44k | 5 repos | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Slack Browser Automationvercel-labs/agent-browser | 44k | 1 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 |
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Related
Works with
Questions about Slack
What does Slack do?
Talk with people on Slack — recognize slack- senders and reach them via chat reply. Slack is an agent skill from laude-institute/headlong.
How do I install Slack in Claude Code?
Run `npx skills add laude-institute/headlong --skill slack -a claude-code`. Or copy the skill folder (skills/slack in laude-institute/headlong) into .claude/skills/slack in your project. Claude Code loads it when a task matches its description.
How do I install Slack in Codex?
Run `npx skills add laude-institute/headlong --skill slack -a codex`. Or copy the skill folder (skills/slack in laude-institute/headlong) into .agents/skills/slack in your project. Codex loads it when a task matches its description.
Can I use Slack 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 laude-institute/headlong --skill slack -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/slack, .gemini/skills/slack, .github/skills/slack and .opencode/skills/slack in your project.
What does Slack need to run?
SKILL.md names no scripts, command-line tools or credentials: Slack is instructions for the agent only.
Does Slack 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 Slack 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 Slack use?
Slack is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Slack use?
About 831 tokens (SKILL.md is roughly 3.3k 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 Slack?
Skills that share tags, products or a category with Slack: Agent Browser CLI (vercel-labs/agent-browser, 44k stars), Slack GIF Creator (anthropics/skills, 180k stars), Code Design Rationale Investigator (cursor/plugins, 11k stars) and Electron App Automation (vercel-labs/agent-browser, 44k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Slack?
laude-institute (a GitHub organization) maintains it in laude-institute/headlong, which has 1,216 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on October 9, 2026.
Source: laude-institute/headlong on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.