NFTs API

What an NFT collection is, its floor price, its size and its last sale

An NFT collection's identity (name, symbol, verified or flagged as possible spam), its cheapest current listing, how many NFTs, holders and transfers it has, and its last sale in the past 90 days.

GET/api/external/nft-analysis/nft-collection/{chain}/{address}

Get a free API key Try it in the API reference

Chains

BNB Chain BNB
Ethereum ETH
Base BASE

Request

Send your key in the x-dex-data-key header. Replace each <placeholder> with a real value.

curl -H "x-dex-data-key: $DEXDATA_API_KEY" \
  "https://api.dexdata.io/api/external/nft-analysis/nft-collection/BNB/<address>"

Parameters
Parameter	Description
`includeMarketplaces` query · boolean · optional	Whether to add `marketplaces`: the floor price and 24h volume on each marketplace listing the collection. Off by default: it is up to two more upstream calls.
`chain` path · string · required	BNB, ETH and BASE only; SOL, STABLE, RHC and ARC all return 400. STABLE and RHC, because this source's NFT product does not index them at all. SOL, because this source answers Solana NFT questions through a separate product this deployment cannot currently reach (confirmed live). ARC, because this source has no EVM coverage for it. CELO, ARB, OP and SCROLL return 400 here.
`address` path · string · required	The NFT collection's contract address (NOT a token mint, and NOT one specific NFT within the collection).

Response fields

A JSON response. Every field is always present; null means the value could not be established, never zero.

Response fields of What an NFT collection is, its floor price, its size and its last sale
Field	Type	Description
`name`	string \| null	The collection's name. `null` when the source has none on file.
`symbol`	string \| null	The collection's on-chain symbol.
`contractType`	string \| null	`"ERC721"` or `"ERC1155"` — the source's own classifier. `null` when undetermined.
`verified`	boolean \| null	`true` when the source has independently verified this as a real, catalogued collection; `null` otherwise. Never `false` — the source does not publish a negative verification, only "verified" or "not looked at".
`possibleSpam`	boolean \| null	`true` when the source flags this contract as likely spam; `null` when it has not flagged either way.
`floorPrice`	number \| null	The lowest current listing price, in `floorPriceCurrency` units. `null` when nothing is currently listed.
`floorPriceUsd`	number \| null	The same floor price converted to USD. `null` when nothing is currently listed.
`floorPriceCurrency`	string \| null	The currency `floorPrice` is denominated in, e.g. `"ETH"`. `null` when nothing is currently listed.
`floorPriceMarketplace`	string \| null	The marketplace the floor price was observed on, e.g. `"opensea"` — a downstream venue this collection trades on, not a data source. `null` when nothing is currently listed.
`itemCount`	integer \| null	How many NFTs the collection holds. A real `0` (a contract with no NFT minted) stays `0`; `null` means the source stated no count.
`ownerCount`	integer \| null	How many addresses hold one of this collection today — the same figure `nft-collection-holders` publishes, from the same count, not a second opinion on it. `null` means the source stated no count.
`transferCount`	integer \| null	How many transfers the collection has seen in its lifetime, mints included. `null` means the source stated no count.
`lastSalePrice`	number \| null	What the most recent sale in the last 90 days paid, in `lastSaleCurrency` units. `null` when the collection had no sale in that window — the window does not reach further back.
`lastSalePriceUsd`	number \| null	The same sale in USD at the time it happened. `null` when there was no sale in the last 90 days.
`lastSaleCurrency`	string \| null	The token the last sale was paid in, e.g. `"ETH"`. `null` when there was no sale in the last 90 days.
`lastSaleAt`	string \| null	When the last sale happened (its block time), ISO 8601 UTC. `null` when there was no sale in the last 90 days.
`marketplaces`	object[] \| null	Only with `includeMarketplaces=true`, absent otherwise. The floor price and 24h volume on each marketplace that reported within the last 7 days, largest 24h volume first; a marketplace that stopped reporting is left out rather than shown with an old floor. Empty when the collection is listed but no marketplace reported in that window; `null` when no marketplace listing of the collection is known.
`marketplaces[].marketplaceId`	string \| null	The marketplace, e.g. `opensea`, `blur`, `magiceden`.
`marketplaces[].marketplace`	string \| null	Its display name, e.g. `OpenSea`.
`marketplaces[].floorPrice`	number \| null	The cheapest listing there, in `currency`.
`marketplaces[].volume24h`	number \| null	24h volume there, in `currency`. `0` is a real reading.
`marketplaces[].currency`	string \| null	The chain's native coin the figures are in, e.g. `ETH`.
`marketplaces[].url`	string \| null	The collection's page on that marketplace.
`marketplaces[].updatedAt`	string	When the marketplace last reported (ISO 8601).

Price per call

BNB Chain, Ethereum, Base: 160 creditsbase; varies with includeMarketplaces

Charged only when the call succeeds. Prices as of 2026-10-30; the current ones are always in the API reference.

Find an NFT collection by name
Every collection-keyed tool needs the contract address; this is where one can come from.
The daily floor price, volume and market cap of an NFT collection
The collection's identity and today's snapshot.
Which NFT collections lead by market cap, 24h volume or floor price right now?
One ranked collection's identity and today's snapshot.
One NFT: its metadata, traits and owner
The collection this NFT belongs to, with its floor price.
Can this NFT collection's owner abuse its holders, and is it flagged malicious?
The collection's identity, verification and floor price.
Many NFT collections: what each is, its floor price, its size
The same answer for one collection.

Start building with DexData today

Sign in, create a key and make your first call in a minute. Free credits every month, and you only pay for calls that succeed.

Get a free API key