Clear DefinitionsFloor Sweeper Bot
1 min read
Pronunciation
[floor swee-per bot]
Analogy
Like a shopkeeper buying up all discounted items on sale to resell later at a profit.
Definition
An automated trading bot that continuously buys NFTs at or near the floor price of a collection to accumulate inventory or drive up the floor. Sweeper bots can be used by collectors or manipulators.
Key Points Intro
Floor sweeper bots target low‑priced listings to aggregate assets or influence market metrics.
Key Points
Auto-purchase: Monitors marketplace APIs for floor listings.
Filtering: Applies trait or rarity filters to avoid unwanted items.
Gas optimization: Batches purchases or uses private mempools.
Risk management: Caps per-collection spend and slippage.
Example
A collector deploys a floor sweeper bot that buys any NFT listed under 1 ETH from a popular collection, reinvesting profits into higher‑rarity acquisitions.
Technical Deep Dive
Bot subscribes to marketplace WebSocket feeds, filters `newOrder` messages below threshold, and triggers `safeTransferFrom()` calls via a multi-call contract to batch purchases. Uses EIP-2612 permits to reduce approval overhead.
Security Warning
Caveat
Sweeper bots may unintentionally buy fraudulent or mispriced items; include verification checks.
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