Casa

Memory the founder can open, diff, and keep

The company does not live in a context window. It lives in a small set of Markdown, JSON, and JSONL files that preserve what is true, what changed, what remains blocked, and what the next session should do.

CASA 06COMPANY BRAIN STUDYPLAIN FILES / FOUNDER OWNED

COMPANY-BRAIN/GIT

NOW.md

profile.json

build-map.json

state.json

ledger.jsonl

dials.json

decisions/

outputs/

NOW.MDCURRENT OPERATING STATE

SESSION PRIMER

Current operating state

North star: Repeatable first value
Next: Activation path experiment
Waiting: Founder pricing decision

DIFFABLEVERSIONEDYOURS

The brain in a session: plain files on the left, the current operating state on the right.

On disk

company-brain/8 entries

NOW.mdcurrent operating state, human-first

profile.jsonwho the company is, confirmed by you

build-map.jsonthe selected, sequenced playbook graph

state.jsonconstraint, posture, progress: one writer

ledger.jsonlappend-only activity, approvals, learnings

dials.jsonper-department autonomy settings

decisions/each decision with its reasoning

outputs/operator deliverables by department

Guarantees

No hosted Casa account or proprietary database
One canonical writer for state transitions; ledgers are append-only
Decisions carry their reasoning, so reversals are informed
Casa writes only inside company-brain/ and scans product code read-only
Optional CAF publication happens only on explicit action

Portability

The brain versions with your code, survives harness switches without a conversion step, and stays readable without Casa installed at all. Git is the backup, audit trail, and transfer mechanism.

Tip: Diff the company

Because state is files, git diff after a session shows exactly what the company learned, decided, and produced. Review it like any other change.

Next steps

ArchitectureWhy one writer and append-only ledgers.

AttestationProjecting parts of the brain as public evidence.