Council-tax challenge letter preview — verdict (letter_supportable / blocked-on-risk-ack / not-supportable) from the same neighbor-band cluster + statutory-route engine the $2 lett

Council-tax challenge letter preview — verdict (letter_supportable / blocked-on-risk-ack / not-supportable) from the same neighbor-band cluster + statutory-route engine the $2 letter uses internally, plus exactly what the letter adds. Agent-tier price point for buyers with a $0.25 per-call cap. No LLM.

price-ascending: candidates are ordered by the listed price of the operation, with no managed-first preference applied. Unlike /v1/apis, this surface does not rank Apiosk-settled listings above federated ones — a comparison that reorders on commercial grounds is not a comparison. Pass sort=managed_first for the catalog's ordering.

Compared: listed price, settlement rail and input compatibility. Not measured yet: latency, reliability, result quality, and provider terms such as rate limits, jurisdiction and licensing.