Layer 03 · The work
Build
Parallel, sandboxed, and reachable only through a typed bus.

Layer 03 · Build
What the agents do
- Specialised agents take dependency-mapped tasks in parallel.
- Each works in a sandboxed worktree, reaching data only through a typed tool bus.
- A task hands off a passing artefact, not a message — deliverables are machine-verifiable.
What the machine refuses
- A direct write to main.
- A data path that bypasses the bus — enforced statically, not by convention.
- A hand-off with nothing passing behind it.
Where a person signs
Deliberately absent
Nobody reviews an agent over its shoulder. Review happens at the gate, where it is repeatable, rather than in the loop, where it is not — and where a tired reviewer approves what a rested one would not.
Methods
- Task graph decomposition
- Specialised agent roles
- Sandboxed codebase worktrees
- Typed tool bus, enforced statically
- Parallel fan-out and rejoin
- Hand-offs as passing artefacts
The other layers