Build a company brain your team owns.
Open-source operating workspace for Claude Cowork: decisions, state, next steps, and routines in team-governed files.
/plugin marketplace add yempik-ai/cowork-os/plugin marketplace addyempik-ai/cowork-osStandardize how we take important decisions. Improve clarity, traceability, and execution speed.
2026-07-14
See: context/goals.md, processes/decision_process.md
Create a decision log for decisions already taken
A team does not only need to know what happened. It needs to know what is open, who decides, and which rule applies.
Memory helps recall. cowork-os organizes work: context, procedures, decisions, and updates become operating material.
Remembers preferences, people, and patterns already seen.
Keeps state, decisions, processes, and next actions on files.
Reviews, approves, and owns the company brain.
Reads the files and works from explicit criteria.
A starting structure opinionated enough to move, simple enough to stay yours.
/context
Company, team, principles, boundaries, and current goals.
mission: own the company brain
principles: file first
limits: no black box
/decisions
Candidates, active decisions, and a weekly Decision Radar: status, owner, and review date.
DEC-42 Accepted
owner: team
next_review: weekly
/signals
Daily sweeps read email and Slack and extract the decisions and commitments made there, ready to confirm. Private, never committed.
Capture where they happen
signals/sync-state.md
/processes
Process index, recurring flows, and operating standards.
trigger: strategic decision
output: ADR + next action
review: Friday
/routines
Weekly review, memory update, and maintenance routines.
weekly_review.md
memory_update.md
stale_decisions.md
/pipeline
Sales rules, follow-up templates in your voice, and a deal radar that feeds the brief. Drafts stay drafts.
Sales layer
pipeline/rules.md
/skills
Instructions for recurring work the team performs.
role: senior strategy architect
mode: clarify, decide, document
output: trade-off
/knowledge-transfer
Interviews, notes, and transformation of knowledge into files.
source: interview notes
extract: rules and exceptions
validate: owner review
Install the plugin, answer a few questions, and get a first structure to correct instead of invent.
/plugin marketplace addyempik-ai/cowork-osquestions
workspace
Add cowork-os from the Claude Cowork marketplace.
Describe company, team, processes, and recurring decisions.
The workspace creates folders, templates, and first instructions.
Routines keep the company brain alive over time.
The value is not saving files. It is turning a messy request into a traceable decision.
input
Should we change the process or add an agent?
senior_strategy_architect
Proposed decision with criteria, trade-offs, what not to do, and next action.
cowork-os comes from how Yempik runs its own company brain: markdown files, explicit decisions, and maintenance routines.
“The important thing is not remembering more. It is leaving the team a system that can be read, discussed, and improved.”
yempik-ai/cowork-os
open source workspace
open
source
file
first
team
owned
No. cowork-os is the open-source project. This page explains what it does and points to the repo. Company Brain Starter remains the offer page.
The plugin is designed for Claude Cowork. The file structure stays readable and reusable outside the plugin too.
No. Memory remains useful for recall and preferences. cowork-os is for team-governed operational work.
In your workspace files. The point is to make the company brain portable, inspectable, and not locked inside a black box.
Start from the open-source kit and adapt it to how your team decides, works, and updates context.