Nitro 4.0 sells human translators as an API endpoint for agents.

#4 on the August 7 leaderboard with 117 upvotes, positioned as "the first human translation platform built for AI agents." The category inversion is the finding: for three years localization vendors sold machine translation to humans; this reverses buyer and supply. The agent is the customer, the human linguist is the service being called. If it holds, what survives in localization SaaS isn't the translation engine, which agents already have, but verified human judgment exposed as a callable endpoint. Single-source from the leaderboard, and the "first" claim is the vendor's.