Tier-adaptive
A small task does not pay the cost of artifacts it does not need.
Agentic Builder consumes the Blueprint and runs production builds in modular executions that compose into multi-month deliveries. It separates a harness layer that orchestrates from a multi-agent layer that generates.
The harness layer orchestrates, constrains, observes, and routes. It never generates business content. The multi-agent layer generates the deliverables. If every agent were replaced, the harness would remain largely unchanged.
A classifier assigns each engagement a complexity tier, and that tier gates the pipeline. A small engagement skips architecture documents and runs a short path. A large platform runs the full sequence with detailed technical requirements, system design, and drift verification.
Model choice is configuration, not a code dependency. The router selects a model per task type and supports a degradation chain that retries on a backup when the primary fails, which gives the system independence from any single vendor's roadmap, pricing, or availability.
A small task does not pay the cost of artifacts it does not need.
Autonomy within the run, human gates around it.
Frontier reasoning where it matters, cost-efficient models for the bulk of execution.
The harness paper documents the full architecture, end to end.