Slackdump is a tool for saving Slack messages, threads, files, users, channels, and emojis as local archives without administrator privileges. People use it to preserve conversations, create exports, or migrate Slack data, while the catalogue entries provide skills, instructions, and an MCP server for working with it.
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 rusq/slackdump --skill slackdump-sourcegit clone --depth 1 https://github.com/rusq/slackdumpWrote 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/rusq/slackdump/slackdump-source)<a href="https://agentmods.dev/skills/rusq/slackdump/slackdump-source"><img src="https://agentmods.dev/badge/skills/rusq/slackdump/slackdump-source/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/rusq/slackdump/slackdump-source"><img src="https://agentmods.dev/badge/skills/rusq/slackdump/slackdump-source.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00014 | $0.00778 |
| Opus 5.5 | $0.00006 | $0.00311 |
| Sonnet 5.5 | $0.00003 | $0.00156 |
| Haiku 4.5 | $0.00001 | $0.00078 |
Grade A, and why
slackdump-source 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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 · 85 lines · 14 tokens per session scan A d9a685d87f69
slackdump-source is a skill published in the GitHub repository rusq/slackdump (2,830 stars, last pushed 5d ago), licensed AGPL-3.0. It adds 14 tokens to every session and 778 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
documents
The Metabase-flavored Markdown grammar for documentwrite — the CommonMark subset, {% card %} embeds, {% entity %} links, ::: layout containers (flex / supporting / resize) and nesting rules, surgical edits and their limits, card clones, comments. Triggers — "create a document / report", "put prose beside a chart"…
frontmcp-channels
Use when pushing real-time notifications or events into Claude Code (or another MCP client) sessions, or building two-way chat bridges. Covers channel source types: incoming webhooks (such as GitHub), app error events, agent-completion and job-completion alerts, service connectors, file watchers, and replay buffers…
slack-channels
A tool for managing Slack channels, which are shared conversation spaces for teams. It looks up user IDs before inviting people or changing channel settings.
cms-metadata-tagger
Takes a finished piece of content and produces a complete, archive-ready metadata record — including descriptive tags, subject classifications, rights notes, and an archival summary — for entry into a content management or digital archive system.
mattermost-channel-messaging
Read and post Mattermost messages via the mattermost-mcp MCP server — list a channel's posts and threads, search posts, create a post or a threaded reply, and handle file attachments with the domain-typed condensed tools. Use when the agent must read recent conversation in a channel, search for a message, post an…
mattermost-team-administration
Administer Mattermost teams and channels via the mattermost-mcp MCP server — list/create teams, list/create/rename/archive channels, set channel privacy, and manage team and channel membership with the domain-typed condensed tools. Use when the agent must provision a channel, resolve a channel or team by name…