slack-kb-channel

slack-kb-channel is a skill for Claude Code, Codex from tomzx/agents. It costs 45 tokens per session (1,221 once invoked), scanned A, original, MIT.

A workflow that builds a monthly knowledge base from conversations in a Slack channel. It collects threads and turns them into dated memory files.

In plain words
What is it for?
Use it to collect channel history, summarize themes and incidents, and preserve links to discussion threads.
Why use it?
It makes important channel discussions easier to find later instead of leaving them buried in chat history.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to collect channel history, summarize themes and incidents, and preserve links to discussion threads.

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Install with agentmods
npx agentmods add skills/tomzx/agents/slack-kb-channel
View source ↗ tomzx/agents
Install

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.

Any agent
npx skills add tomzx/agents --skill slack-kb-channel
Clone the repo
git clone --depth 1 https://github.com/tomzx/agents

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for slack-kb-channel

README.md
[![agentmods](https://agentmods.dev/badge/skills/tomzx/agents/slack-kb-channel/github.svg)](https://agentmods.dev/skills/tomzx/agents/slack-kb-channel)
Your own site
<a href="https://agentmods.dev/skills/tomzx/agents/slack-kb-channel"><img src="https://agentmods.dev/badge/skills/tomzx/agents/slack-kb-channel/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.

agentmods 80×15 button for slack-kb-channel

Your own site · 80×15
<a href="https://agentmods.dev/skills/tomzx/agents/slack-kb-channel"><img src="https://agentmods.dev/badge/skills/tomzx/agents/slack-kb-channel.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,221 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.01221
Opus 5 $0.00023 $0.00611
Sonnet 5 $0.00009 $0.00244
Haiku 4.5 $0.00005 $0.00122

Measured 7d ago against content hash f86726e49244, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

slack-kb-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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (build_thread_kb.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/slack-kb-channel/SKILL.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Slack channel knowledge base

Use when building or updating a Slack channel knowledge base for a given month. Works for any channel you have access to; you need its Slack channel id (starts with C for public channels).

Memory (canonical — ship this)

Temporal memory (time-sliced, one file per calendar month) lives under memory/temporal/. That directory name signals content keyed by when it was observed, not by long-lived theme.

Path Purpose
memory/temporal/<channel-slug>-YYYY-MM.md Channel themes, incidents, pointers, and thread-derived findings (thematic digest keyed by thread_ts; no exhaustive thread list in the file)

Use a stable short slug for the channel in the filename (e.g. help-ml-infrastructure, team-foo-oncall), so the same channel always maps to the same prefix. You may include the channel id in prose or front matter if that helps disambiguation.

Do not add a separate -threads.md or other companion KB files for the same month.

Rules for memory

  • Dates in prose: Prefer YYYY/MM/DD for a specific day and YYYY/MM for a month (e.g. incident windows, “seen in” notes). Avoid English month names or abbreviations (Feb, March 2026) in running text unless quoting Slack verbatim.
  • Do not include a thread index (full table of every thread_ts + topic) in the monthly markdown. Use thread-derived findings only, with thread_ts inline where it helps.
  • Do not link to, name, or point readers at raw thread capture files (e.g. per-thread markdown exports, “dump” directories, or filenames derived from timestamps). Those are ingestion artifacts, not the KB.
  • Thread identity in memory is thread_ts (and channel id when the slug alone is ambiguous). People re-open discussions in Slack using those ids.
  • When merging new facts from Slack, update the single monthly file under memory/temporal/ only; do not add “see file X in folder Y” for raw captures.

Read the full file on GitHub · 69 lines

Files

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.

Changes

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.

  1. 7d ago First seen · 69 lines · 45 tokens per session scan A f86726e49244

Subscribe to this mod's changes

slack-kb-channel is a skill published in the GitHub repository tomzx/agents (6 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 1,221 once invoked, about $0.0002 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 2026-09-03.

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