Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add davidtoby/agent-skills --skill slackgit clone --depth 1 https://github.com/davidtoby/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/davidtoby/agent-skills/slack)<a href="https://agentmods.dev/skills/davidtoby/agent-skills/slack"><img src="https://agentmods.dev/badge/skills/davidtoby/agent-skills/slack/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/davidtoby/agent-skills/slack"><img src="https://agentmods.dev/badge/skills/davidtoby/agent-skills/slack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00038 | $0.00700 |
| Opus 5.5 | $0.00015 | $0.00280 |
| Sonnet 5.5 | $0.00008 | $0.00140 |
| Haiku 4.5 | $0.00004 | $0.00070 |
Grade A, and why
slack scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
88% identical to slack — 21 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slack Actions
Overview
Use slack to react, manage pins, send/edit/delete messages, and fetch member info. The tool uses the bot token configured for Clawdbot.
Inputs to collect
channelIdandmessageId(Slack message timestamp, e.g.1712023032.1234).- For reactions, an
emoji(Unicode or:name:). - For message sends, a
totarget (channel:<id>oruser:<id>) andcontent.
Message context lines include slack message id and channel fields you can reuse directly.
Actions
Action groups
| Action group | Default | Notes |
|---|---|---|
| reactions | enabled | React + list reactions |
| messages | enabled | Read/send/edit/delete |
| pins | enabled | Pin/unpin/list |
| memberInfo | enabled | Member info |
| emojiList | enabled | Custom emoji list |
React to a message
{
"action": "react",
"channelId": "C123",
"messageId": "1712023032.1234",
"emoji": "✅"
}
List reactions
{
"action": "reactions",
"channelId": "C123",
"messageId": "1712023032.1234"
}
Send a message
{
"action": "sendMessage",
"to": "channel:C123",
"content": "Hello from Clawdbot"
}
Edit a message
{
"action": "editMessage",
"channelId": "C123",
"messageId": "1712023032.1234",
"content": "Updated text"
}
Delete a message
{
"action": "deleteMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
Read recent messages
{
"action": "readMessages",
"channelId": "C123",
"limit": 20
}
Pin a message
{
"action": "pinMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
Unpin a message
{
"action": "unpinMessage",
"channelId": "C123",
"messageId": "1712023032.1234"
}
List pinned items
{
"action": "listPins",
"channelId": "C123"
}
Member info
{
"action": "memberInfo",
"userId": "U123"
}
Emoji list
{
"action": "emojiList"
}
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 144 lines · 38 tokens per session scan A e15de2ab67a9
slack is a skill published in the GitHub repository davidtoby/agent-skills (11 stars, last pushed 2mo ago), licensed MIT. It adds 38 tokens to every session and 700 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to slack, differing in 21 lines, and is treated as a copy.
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