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 agentmods add commands/slackapi/slack-skills-plugin/summarize-channelgit clone --depth 1 https://github.com/slackapi/slack-skills-pluginWrote 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/commands/slackapi/slack-skills-plugin/summarize-channel)<a href="https://agentmods.dev/commands/slackapi/slack-skills-plugin/summarize-channel"><img src="https://agentmods.dev/badge/commands/slackapi/slack-skills-plugin/summarize-channel.svg" alt="Measured on agentmods" 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 | $0.00009 | $0.00233 |
| Opus 5 | $0.00005 | $0.00117 |
| Sonnet 5 | $0.00002 | $0.00047 |
| Haiku 4.5 | $0.00001 | $0.00023 |
Grade A, and why
summarize-channel 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 4d 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.
What it actually says
Given the channel name provided in $ARGUMENTS (strip any leading #):
- Use the
slack_search_channelstool to find the channel ID for the provided channel name. Strip any leading#from the argument before searching. - Use the
slack_read_channeltool to read recent messages from the channel (default limit of 100 messages). - For any messages that have threads with replies, use
slack_read_threadto read the thread contents so the summary captures threaded discussions. - Produce a concise summary organized by topic or theme. The summary should include:
- An overview of the main topics discussed
- Key decisions or action items mentioned
- Notable announcements or updates
- Active threads and their conclusions (if any)
- Keep the summary scannable — use short bullet points grouped by topic. Mention who said what when it's relevant (e.g., decisions, action items).
- If the channel has very little recent activity, say so and note the last time a message was posted.
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.
- 4d ago First seen · 17 lines · 9 tokens per session scan A 1719cc1abd99
summarize-channel is a command published in the GitHub repository slackapi/slack-skills-plugin (117 stars, last pushed today), licensed MIT. It adds 9 tokens to every session and 233 once invoked, about $0.0000 per session on Opus 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 2026-08-30.
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