Company Brain in Obsidian: Share Notes With Clear Boundaries

To build a company brain in Obsidian, create a dedicated work vault, agree on a small note structure, and give someone responsibility for reviewing each important page. Share only material that everyone in that vault should be able to read and change.

Obsidian can hold the explanations behind your work. Tools like fenbs keep the shared tasks, Decisions and rules, and handoffs that people and connected assistants need as that work changes. Decide which record owns each answer before you start copying notes between them.

How do you start a work vault without moving everything?

1. Choose one project whose background people regularly have to explain. List the questions a new teammate needs answered before contributing.
2. Create a separate company vault. Add a start page, a project overview, a glossary, and a source list for that project.
3. Give every maintained note a responsible person and a review date. Label working ideas separately from agreed instructions.
4. Choose an approved sharing method, test it with a colleague, and check that both people see the same revision.
5. Run one real handoff. Ask the colleague to find the approved direction and next action using the notes, then fix what was missing.

A vault is a local folder of Markdown files, meaning plain text with simple formatting, according to Obsidian’s storage documentation↗ (opens in a new tab). That makes file organization a practical team choice: you need a clear shared location and a named maintainer, even if the first version has only a few pages.

For a hypothetical design studio, start with the current website project rather than the entire company archive. Record the audience, approved design references, terms the client uses, and unresolved questions. Old meeting notes can stay where they are until someone needs them.

What should each shared note contain?

Use a short header that answers who maintains the note, where its evidence lives, and when it should be checked again. These are writing conventions your team adopts, rather than an approval system supplied by the file format.

Title: Website audience and tone
Maintainer: Project lead
Status: Reference summary; approval recorded separately
Source: Approved client brief, revision B
Last reviewed: October 20, 2026
Review when: The client changes the audience
Related work: Contact-page revision task

Keep one question per note when that helps people find the answer. A page explaining the audience should link to the client brief and relevant project overview. It should not quietly become a second task list with a different account of what is finished.

For broader background, read the introductions to an AI brain and an AI second brain; this setup focuses on maintaining shared company notes.

Who can read and edit a shared vault?

Obsidian Sync supports shared vaults, and its collaboration guide↗ (opens in a new tab) says collaborators need an active Sync subscription. It also says fine-grained permissions are unavailable: collaborators have the owner’s permissions except that only the owner can invite others. Treat the vault as a common access boundary.

A folder named Private is an organizational label, not a reason to assume its contents are protected from other vault members. Keep payroll, legal matters, and material restricted to another audience outside the common vault. Review the actual sharing arrangement before adding client documents.

If your studio brings in an outside illustrator, decide whether that person should see the entire vault before inviting them. A small, separate set of approved references may be a better handoff. Never solve a narrow sharing need by giving someone a much larger collection without checking its contents.

For active work with different member responsibilities, fenbs explains team kanban boards and roles, while the source files can remain in their appropriate home.

How do you avoid conflicting edits and stale instructions?

The same Obsidian collaboration guide distinguishes syncing files from live editing together. Changes arrive through sync rather than a shared cursor. Agree who is editing a sensitive reference page, and let changes finish syncing before someone else revises it.

Set a simple review trigger for each important page. The audience note needs attention when the client changes its requirements; the delivery checklist needs attention when the process changes. Reviewing on a meaningful event is more useful than repeatedly changing a date without checking the evidence.

• When two notes disagree, ask the responsible person which source governs the current work.
• When a person replaces a decision, preserve the earlier reasoning and point readers to the new choice.
• When a reference becomes historical, say so at its beginning rather than leaving it among current instructions.
• When a task finishes, update its work record and any reference note that now gives a misleading next step.

Keep a separate recovery plan. Obsidian’s backup guidance↗ (opens in a new tab) explains why syncing and backup serve different purposes. Test restoring an unimportant sample note so the team knows what recovery involves before it loses something important.

How should an assistant use the notes?

Give an assistant only the approved material needed for the task, using a connection or file workflow your organization has checked. A shared vault does not by itself give every AI app access. Ask the assistant to identify the source revision it used and separate a documented fact from its own suggestion.

For the studio, a useful instruction is: “Use the approved audience note to draft the contact-page text. List any questions the note does not answer. Do not treat a proposed change as client approval.” This makes missing context visible before a fluent answer turns an assumption into apparent agreement.

The Obsidian and Notion connection comparison covers tool-access choices; check the setup you actually use before promising colleagues that their assistants can read the vault.

How to do this with fenbs

1. Create a free account. Try the workflow yourself, then use a team kanban board when colleagues need shared access.
2. Add the project and current tasks. Include enough approved context to understand the work, and identify the source note or document where details belong.
3. Record the choices people have made in Decisions and rules. Keep suggestions open until a person decides, and avoid maintaining a competing approval list in the vault.
4. Follow the relevant AI connection guide. Ask the connected assistant to read the project context before working and save Where we left off before stopping.

fenbs is not the right fit if your only need is a local collection of linked essays or a visual map of notes. It does not sync an Obsidian vault. Use it when the missing piece is a maintained work record that teammates and their supported assistants can share.

At the end of your trial, ask a colleague to locate the source, explain the current decision, and name the next task. If any answer depends on your private recollection, add that missing fact to the appropriate record. The team brain collection covers other shared-work patterns, while the Obsidian second-brain guide owns the broader note-system setup.