Working with Baby Whale

Coworker mode

Coworker mode is the preset that turns the harness into an office teammate. Instead of answering questions about work, it plans the work, runs the tools, and hands back finished files.

Starting a session

Click New Session, pick a workspace, and make sure the session shows Coworker mode next to the title. Then brief it the way you'd brief a colleague:

What you want — "a Q1 revenue workbook and a five-slide review deck."
From where — attach the source file, or point at one already in the workspace.
Any constraints — currency, date formats, branding colors, slide count.

example brief

Build a Q1 revenue workbook and a five-slide review deck
from sales-export.csv. USD everywhere, dates as yyyy-mm-dd,
and highlight March — it was the outlier.

What happens next

Baby Whale reads the source, sketches a plan, and shows its steps in the chat — file reads, scripts written, commands run. When it finishes, the files are in your workspace under deliverables/, with a Deliverables card for each one in the chat. Open them locally: they're real files, fully editable.

✓

Iterate in the same session. Follow-ups like "add a quarter-over-quarter sheet" or "make slide 3 a chart" reuse what it already knows about your data — faster and more consistent than starting over.

Good habits

One outcome per session. A workbook-and-deck pairing works well; a kitchen-sink session drifts.
Upload the real source. Pasted fragments lose formatting; attached files get read properly.
Say where numbers come from. "Revenue is in column D, currency in E" prevents silent guessing.
Ask for verification. It already checks formulas and file integrity, but "verify the totals tie to the source" is a fair request.

Trajectory and artifacts

Above the chat you'll find Trajectory — the full step-by-step record of what it did and why — and Artifacts, everything the session produced. The Session log button exports the record if you need an audit trail.

Next: what it can build — Office deliverables →