Clearing
On each inference request the router selects the cheapest active offer at or below your max price, with enough routable capacity. You never choose a supplier. Fall-forward may try additional supplier keys when upstream rejects retryably; successful settlement still binds to one clear.
If nothing eligible can clear, the API returns 503 with a structured reason (no_eligible_supply, empty pool, and related codes). Raise max price or retry when depth returns. See Errors.