slack-skills-plugin is a plugin that connects coding agents to Slack through a Slack MCP server and provides Slack-focused skills for users and developers. It is used with Claude Code, Cursor, Codex, and other coding agents to work with Slack and build Slack applications. The catalogue entries are the plugin's included skills, commands, MCP server, instructions, and settings.
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 skills/slackapi/slack-skills-plugin/slack-searchnpx skills add slackapi/slack-skills-plugin --skill slack-searchgit 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/skills/slackapi/slack-skills-plugin/slack-search)<a href="https://agentmods.dev/skills/slackapi/slack-skills-plugin/slack-search"><img src="https://agentmods.dev/badge/skills/slackapi/slack-skills-plugin/slack-search.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 5.1 | $0.00077 | $0.01347 |
| Opus 5 | $0.00039 | $0.00674 |
| Sonnet 5 | $0.00015 | $0.00269 |
| Haiku 4.5 | $0.00008 | $0.00135 |
Grade A, and why
slack-search 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slack Search
This skill provides guidance for effectively searching Slack to find messages, files, and information.
When to Use
Apply this skill whenever you need to find information in Slack, including when a user asks you to locate messages, conversations, files, or people, or when you need to gather context before answering a question about what's happening in Slack.
Search Tools Overview
| Tool | Use When |
|---|---|
slack_search_public |
Searching public channels only. Does not require user consent. |
slack_search_public_and_private |
Searching all channels including private, DMs, and group DMs. Requires user consent. |
slack_search_channels |
Finding channels by name or description. |
slack_search_users |
Finding people by name, email, or role. |
Search Strategy
Start Broad, Then Narrow
- Begin with a simple keyword or natural language question.
- If too many results, add filters (
in:,from:, date ranges). - If too few results, remove filters and try synonyms or related terms.
Choose the Right Search Mode
- Natural language questions (e.g., "What is the deadline for project X?"): Best for fuzzy, conceptual searches where you don't know exact keywords.
- Keyword search (e.g.,
project X deadline): Best for finding specific, exact content.
Use Multiple Searches
Don't rely on a single search. Break complex questions into smaller searches:
- Search for the topic first
- Then search for specific people's contributions
- Then search in specific channels
Search Modifiers Reference
Location Filters
in:channel-name: Search within a specific channelin:<#C123456>: Search in channel by ID-in:channel-name: Exclude a channelin:<@U123456>orin:@username: Search in DMs with a user
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.
- 6d ago First seen · 124 lines · 77 tokens per session scan A 07c7a141ec81
slack-search is a skill published in the GitHub repository slackapi/slack-skills-plugin (120 stars, last pushed today), licensed MIT. It adds 77 tokens to every session and 1,347 once invoked, about $0.0004 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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