Prometheus didn't carry the stolen fire down from Olympus in his hands — he smuggled it inside a narthex, a fennel stalk whose pith holds a slow-burning ember without being consumed.
Narthex is that vessel for frontier models: a multi-agent workflow harness with durable state, enforced budgets, independent evaluation, and a complete audit trail. The model is the fire. This keeps it carried safely — and working.
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Objectives, not tickets
Describe an outcome in conversation. The builder drafts the workflow, rubric, and budget — you confirm the spend, the harness does the rest.
Graded by a rival
Every objective is judged by an independent frontier model from a different vendor, against your rubric, in a fresh context. No model marks its own homework.
Money is a hard wall
Budgets are enforced per model turn by the harness — soft goals guide the models, hard ceilings stop them. Every cent lands in an append-only ledger.
Everything attributed
Each action carries the human who initiated it — through sessions, runs, charges, and artifacts. Who spent what, and why, is one query.