capx-ai/casa/casa-build

casa-build

The doer. casa-next and casa-priority say what to do; casa-build actually does it, to a standard, and advances the company state. It is the execution half of the build then review loop (casa-review is the other half).

Steps

1. If company-brain/profile.json does not exist, tell the founder to run /casa-start

first and stop.

1. Pick the node. Read company-brain/build-map.json and NOW.md. The target is

either the id the user named or the top ready action. Confirm its status is ready (not blocked or done). If the user named a blocked node, say what it is waiting on and stop.

1. Load the playbook and its inputs. Playbook files are numbered NNN-<id>.md, so

find the file with a glob: ${CASA_ROOT:-${CLAUDE_PLUGIN_ROOT}}/playbooks/level-<N>/*-<id>.md. Read its ## Procedure, its consumes artifacts (load each from company-brain/), and its produces artifact name. If a consumed artifact is missing, stop and route the founder to the playbook that produces it.

1. Route to the operator, then do the work to a quality bar. Read the playbook's

department frontmatter and delegate to the operator agent that staffs it. node ${CASA_ROOT:-${CLAUDE_PLUGIN_ROOT}}/scripts/roster.mjs company-brain lists this company's departments and operators (mapping: Strategy -> casa-strategist / casa-researcher, Brand -> casa-brand, Product -> casa-product, Engineering -> casa-engineer, Data -> casa-analyst, Growth -> casa-growth / casa-marketer / casa-lifecycle, Sales -> casa-sales, Success -> casa-success, Finance -> casa-finance, Operations -> casa-operator / casa-partnership, Legal -> casa-operator). The operator follows the procedure and produces the real artifact, not a placeholder. If the playbook produces founder-facing copy, draft it through casa-write (which runs the deterministic copy linter). If it produces UI, use casa-design. Keep the company profile and any locked decisions in view.

1. Respect the gates. If the playbook is human_gate or the step is irreversible,

legal, or spends money, STOP before that step: present what you are about to do and get explicit approval. Never file, pay, sign, send, or publish on your own.

1. Write the artifact. Save the produced artifact to company-brain/outputs/<id>/.

This path is the contract: casa-review, casa-board, and casa-department all read and grade from it. If a significant decision was made, append a record to decisions/.

1. Hand off what only the founder can do. If the playbook requires a real-world

founder action Casa cannot perform (customer interviews, a filing, a phone call), do all the preparation work first (the script, the list, the draft), then mark the play as waiting on the founder:

`` node ${CASA_ROOT:-${CLAUDE_PLUGIN_ROOT}}/scripts/brain.mjs waiting company-brain <id> "<what the founder must do>" ``

Tell the founder in plain words exactly what to do, and how to come back: when it is done, run node ${CASA_ROOT:-${CLAUDE_PLUGIN_ROOT}}/scripts/brain.mjs unwait company-brain <id> and then complete the play (step 8). Until then it shows under "Waiting on you" in NOW.md. Never mark a waiting play done.

1. Review before done. Run casa-review on the produced artifact (the personas that

fit its type). Address P0 and P1 findings before continuing. For a low-stakes artifact a single self-review pass is enough.

1. Mark it done. Advance the deterministic state:

`` node ${CASA_ROOT:-${CLAUDE_PLUGIN_ROOT}}/scripts/brain.mjs complete company-brain <id> --agent <dispatched-operator-name> ``

This re-renders the build map, NOW.md, and the company CLAUDE.md AUTO blocks, and may advance the level. Hand off to casa-next for what is now unblocked.

Rules

• Only build a ready node. The level gate and dependencies exist for a reason; an

out-of-order artifact is garbage.

• State changes go through brain.mjs complete, never by hand-editing build-map.json

or the AUTO blocks.

• Never auto-execute a human-gate, irreversible, money, or legal step. Surface it.
• Produce real artifacts, never lorem-ipsum or placeholder company names.
• No em-dashes, no emojis in any output the founder or a customer will see.