Markets

OpenSea on Chadbot: Ethereum & Robinhood Chain

Chadbot now trades OpenSea alongside Solana — live order books, real floors and top bids, and snipers that fire on price, rarity or traits.

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⚡ Quick answer
Chadbot keeps its own copy of the order book for every collection you watch, updated from OpenSea's live feed. Listings, sales, cancels and collection offers land as they happen, so the floor you see is the floor you can actually fill — and a sniper reacts in milliseconds rather than waiting for the next refresh.
OpenSea live feed
Live feed128 events
CryptoPunks
CryptoPunksEthereum
0.400 ETH
Listings
live
Top bid
live
Page load
instant
Listings and offers land in our own order book as they happen — snipe rules are checked against them straight away, with nothing to wait on.

Which chains, and why these two

Ethereum is where the collections everyone knows still live. Robinhood Chain is new, ETH-denominated, and busy — it produces far more listings per minute than Ethereum does, which makes it the more interesting chain for a sniper. Both are served from the same code path.
CryptoPunksCryptoPunks
Bored Ape Yacht ClubBored Ape Yacht Club
AzukiAzuki
Pudgy PenguinsPudgy Penguins
Mutant Ape Yacht ClubMutant Ape Yacht Club
Cash CatsCash Cats
StonkBrokersStonkBrokers
pyopyopyopyopyopyopyopyo
// Key takeaways
  • The book is kept live, not re-fetched. Listings, sales, cancels and offers all arrive as they happen. Once a collection is being watched, opening its page costs nothing extra.
  • Prices stay in their own currency. Listings are in ETH, collection offers in WETH. Nothing is converted without a price source, so no number on the page is a guess.
  • Snipers work on price, rarity rank or traits — the same conditions as Solana, using the same rarity tiers, so a tier means the same thing on both.
  • Everything is charged on a fill, never on an attempt. Sniper fees are volume-based; bid and listing bots are 0.1% of what actually trades.

How the live feed works

Asking OpenSea for a fresh price every time anyone opens a page — or every time a sniper checks its rule — is both slow and wasteful. So Chadbot listens once per collection and keeps the book itself:
  seller lists on OpenSea
        │
        ▼
  live feed event ───────────► Chadbot order book (in memory)
        │                              │
        │                              ├─► collection page   (instant)
        │                              ├─► floor & top bid   (instant)
        │                              └─► sniper rules      (instant)
        │
        └─► periodic re-check ◄─── catches anything the feed missed
A listing goes from the seller straight to your sniper, with nothing to wait on in between.
The periodic re-check matters as much as the live feed. A live feed can only tell you what happened while you were connected — it cannot tell you what you missed if the connection dropped. So Chadbot re-reads every watched collection regularly, and immediately after any reconnection, because a book that quietly missed a cancellation would quote a floor nobody can fill.

Sniping on OpenSea

A sniper watches for a listing that matches your conditions and reacts the moment one appears. On OpenSea you can combine:
  • A price ceiling — a fixed amount, or a percentage of the live floor so the rule follows the market.
  • A rarity condition — by rank, or by tier (mythic, legendary, epic, rare, uncommon). The tiers are the same percentages used everywhere else in Chadbot.
  • Trait conditions — several values of one trait means either; values across different traits means all of them.
How a listing is judged
✓Listing landsfree
×Price rulefree
3Trait lookup1 lookup
4Buy
Most listings are rejected on price alone, before anything is looked up — which is what keeps a sniper cheap to run.
★ Price is checked first, on purpose
Traits do not travel with an OpenSea listing event, so checking them costs a lookup. Chadbot checks your price condition first — that is free — and only spends a lookup on a listing that already qualifies. The result is cached permanently, because a token's traits never change.

What is different from Solana

  • Buying needs a funded EVM wallet. Until you attach one, an OpenSea snipe watches and notifies but never signs.
  • Bids are WETH. A collection offer has to be escrowed, and native ETH cannot be, so the bid side is shown in WETH while listings are in ETH.
  • Some collections have no Seaport listings at all. CryptoPunks trades on its own contract, so it has a real floor and an empty item list. That is accurate, not a bug.
  • Royalties are marketplace-applied, not enforced on-chain, so the post-fee numbers work differently from a Solana collection with an enforced royalty.

What it costs

What a snipe costs
Successful buyNo Chad
Goes to the seller
Fee
Higher Chad tiers pay a smaller slice. A snipe that never fires costs nothing at all.
Bid & listing bots0.1% of a fill
Waiting, editing and cancelling are free. The fee exists only when something trades.
The fee is a slice of what you actually paid — and it only exists when a buy lands.
Sniper fees are volume-based and identical to Solana: a percentage of the price you actually pay, charged only when a buy succeeds, and lower for Chad holders. Nothing is charged for a snipe that watches all week and never fires.Bid and listing bots are charged 0.1% of a fill. Deliberately small, and deliberately not zero: a bot that waits all day, edits its bid a hundred times and cancels costs nothing at all — the fee exists only when something actually trades, and it is a tenth of a percent of that trade. Starting at a real number rather than at free is the honest way round, because a price that goes from nothing to something is a surprise in a way that a price that moves is not.

Frequently asked

Which chains does Chadbot support on OpenSea?

Ethereum and Robinhood Chain to start. Base, Abstract and ApeChain are implemented and verified against the live API but are not switched on yet — turning one on is a one-line change, not new work.

Can Chadbot buy an OpenSea listing for me automatically?

Yes, once you attach a funded EVM wallet. An OpenSea snipe is detection-only until then: it watches, matches and tells you, but never signs. That is deliberate — a buy path you cannot test honestly is worse than none.

Are prices in ETH or SOL?

In whatever the listing is actually denominated in. Ethereum and Robinhood Chain listings are in ETH; collection offers are in WETH, because an offer has to be escrowed and native ETH cannot be. Chadbot never converts between currencies without a price source, so the two are shown separately rather than added together.

How fast is the OpenSea feed?

New listings reach Chadbot's own order book the moment they appear, instead of whenever the next refresh happens to run. Your snipe rule is checked against the listing right away. Only rules that also filter on a trait or a rarity rank need one extra look-up, and that answer is stored for good, because an item's traits never change.

Does trait sniping work on OpenSea?

Yes. Traits do not ride the OpenSea listing event the way they do on Solana, so Chadbot fetches them once per token and caches them forever. The price condition is checked first — for free — and only a listing that already qualifies on price costs a metadata lookup.

Why does CryptoPunks show no listings?

Because it genuinely has none on Seaport. Punks trade on their own contract, so OpenSea reports a floor for the collection while carrying zero Seaport orders. Chadbot shows the real floor and an empty item list, which is the honest answer rather than a fabricated one.

What does OpenSea trading cost on Chadbot?

Sniper fees are volume-based and identical to Solana: a percentage of the price you actually pay, charged only on a successful buy, and lower for Chad holders. Bid and listing bots are charged 0.1% of a fill — nothing while a bot waits, edits or cancels.

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