Your team's decisions, findable again.

Workspace Historian is a Slack agent that turns channel conversations into a living decision knowledge base — captured by AI, approved by humans, and always linked back to the original thread.

Add to Slack

Free during beta.

How it works

1
Invite it to a public channel.Workspace Historian only reads channels it has been explicitly invited to. It never joins channels on its own, never posts to #general by default, and never uses @channel or @everyone.
2
It detects decisions.The app reads channel history and new messages in real time and uses AI (Groq's GPT OSS 20B/120B) to identify team decisions and the reasoning behind them.
3
A human approves.The app proposes a structured decision entry — title, summary, reasoning, participants, date, and a link to the original thread. A human curator must approve every entry before it is published. Nothing is auto-published.
4
Everyone can find them.Browse published decisions in the app's Home tab, or ask questions in Slack's AI agent panel or with the /historian command.

Features

Structured decision entries.
Every entry captures a title, summary, reasoning, participants, date, and a permalink to the original conversation.
Human-in-the-loop by design.
A curator reviews and approves every entry before it is published — the AI never publishes on its own.
Ask instead of digging.
Question answering in Slack's AI agent panel and via /historian, with Slack's Real-Time Search API used to pull in related public-channel context when you ask.
Zero-copy data handling.
Raw Slack messages are pulled in real time, processed, and discarded — never stored. Only structured decision metadata is kept.
No model training on your data.
Your Slack data is never used to train any AI model.
Always linked to the source.
Every answer and entry points back to the original thread so you can verify the context yourself.

A note on AI. Workspace Historian uses AI to generate summaries and answers. AI-generated content can be inaccurate or incomplete — always verify against the linked original conversation before relying on it.

Privacy at a glance

Raw message content, files, and attachments are never stored — messages are processed transiently and discarded.
Only structured decision metadata is persisted: AI-generated title, summary, and reasoning, channel ID, timestamps, permalink, participant user IDs, tags, and review status.
It reads only public channels it has been explicitly invited to. It cannot see private channels or other people's direct messages.
Data is retained until you uninstall the app or a curator deletes an entry; everything is purged within 30 days of uninstall.

Read the full privacy policy.

Plans and pricing

Workspace Historian is free during beta.

Slack's AI agent split-pane experience requires a paid Slack plan — this is a Slack platform requirement. The Home tab and the /historian command work on all plans. Free Slack plans expose roughly the last 90 days of message history; the app respects your plan's limits and does not circumvent them.

Questions?

Visit the support page or email sibivelc@gmail.com — we respond within 2 business days.