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 adbertram/cli-tools --skill slack-cligit clone --depth 1 https://github.com/adbertram/cli-toolsWrote 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/adbertram/cli-tools/slack-cli)<a href="https://agentmods.dev/skills/adbertram/cli-tools/slack-cli"><img src="https://agentmods.dev/badge/skills/adbertram/cli-tools/slack-cli/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/adbertram/cli-tools/slack-cli"><img src="https://agentmods.dev/badge/skills/adbertram/cli-tools/slack-cli.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 | $0.00131 | $0.00846 |
| Opus 5.5 | $0.00052 | $0.00338 |
| Sonnet 5.5 | $0.00026 | $0.00169 |
| Haiku 4.5 | $0.00013 | $0.00085 |
Grade A, and why
slack-cli 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 today.
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.
What it actually says
<quick_start>
The slack CLI follows this pattern:
slack <command-group> <action> [arguments] [options]
| Task | Command |
|---|---|
| Send a message | slack messages send CHANNEL_ID "Hello!" |
| Reply in thread | slack messages send CHANNEL_ID "Reply" --thread-ts TS |
| List channels | slack channels list --table |
| Read channel messages | slack messages list CHANNEL_ID --table |
| Search messages | slack messages search "query" --table |
| Send a DM | slack dm send @user "Hello!" |
| Read DMs | slack dm read @user --table |
| Check notifications | slack notifications list --table |
| Upload a file | slack files upload file.pdf --channels CHANNEL_ID |
| Upload several files as ONE message (max 10) | slack files upload a.pptx b.pptx --channels CHANNEL_ID --comment "..." |
| List users | slack users list --table |
| Set your profile photo | slack users set-photo avatar.png |
| </quick_start> |
<essential_principles>
MANDATORY: Consult the adjacent usage.json at <cli-tools-root>/_repo/skills/<tool>-cli/usage.json before executing ANY slack command.
This file contains complete command syntax, all arguments, all options, and usage instructions for every command. Never guess at command syntax.
<reference_index>
usage.json — Complete command tree with arguments, options, defaults, and usage instructions for every command.
</reference_index>
<success_criteria>
- Command executes without error
- Output is displayed in requested format
- Correct command and flags used (verified against usage.json) </success_criteria>
What ships with it
1 file 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.
- today First seen · 70 lines · 131 tokens per session scan A cadf249cb50a
slack-cli is a skill published in the GitHub repository adbertram/cli-tools (6 stars, last pushed today), licensed MIT. It adds 131 tokens to every session and 846 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.
slack-cli compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| slack-cliadbertram/cli-tools | Skill | 6 | today | MIT | A | 131 | Claude Code, Codex |
| browser-usebrowser-use/browser-use | Skill | 120k | yesterday | MIT | A | 57 | Claude Code, Codex |
| opencli-autofixjackwener/OpenCLI | Skill | 31k | yesterday | Apache-2.0 | A | 61 | Claude Code |
| benchmark-workflowxberg-io/xberg | Skill | 9.5k | yesterday | MIT | A | 13 | Claude Code |
| gog-workspaceAtomicBot-ai/atomic-agent | Skill | 3.4k | 8d ago | MIT | A | 68 | Claude Code, Codex |
| apple-calendarAtomicBot-ai/atomic-agent | Skill | 3.4k | 8d ago | MIT | A | 45 | Claude Code, Codex |
| apple-remindersAtomicBot-ai/atomic-agent | Skill | 3.4k | 8d ago | MIT | A | 31 | Claude Code, Codex |