Toncenter API now automatically filters inappropriate token images (NFTs and Jettons) using an LLM-based filtration system.
Following the reduction in TON transaction fees, spam and inappropriate content distributed as NFTs have become more noticeable on the network.
Building on its existing manual moderation tools, Toncenter has introduced an LLM-based image analyzer. Images flagged as inappropriate are now served by the API in blurred form. No changes are required for services already using Toncenter API.
Guidelines for Services
Toncenter API v3 metadata includes the following fields to help services handle potentially unsafe or malicious tokens:
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is_nsfw — marks tokens that have been identified as unsafe or potentially unsafe;-
is_scam — marks tokens associated with scams or spam;-
extra._image_big, extra._image_medium, and extra._image_small — contain links to processed token images. Images are resized to standard presets and automatically blurred when a token is marked as unsafe.To better protect users, we recommend using an opt-in approach when displaying tokens in wallets, explorers, and other services.
By default, show only well-known or trusted tokens and their images. Other tokens and their images should be displayed only after the user explicitly chooses to enable them.
Please note: LLM-based filtering provides an additional layer of protection, but no automated filtering system can guarantee 100% accuracy. Both false negatives and false positives may occur.