01Delivered
Order and settlement model
Listings and offers signed off-chain with EIP-712 and settled on-chain, usually through an established, audited exchange protocol such as Seaport rather than a fresh contract.
Service · Blockchain
NFT Marketplace Development Services
Commission us to build the venue where NFTs are listed, bid on and sold. The work centres on order signing and settlement, fast indexed discovery, fee and royalty handling, and the moderation a public marketplace cannot avoid.
Gasless signed listings
Audited settlement protocol reused
Indexed search across collections
Deliverables
What an NFT marketplace development engagement delivers.
02Delivered
Order book service
A backend that stores signed orders, validates them against current ownership and approvals, and expires or cancels them when conditions change.
03Delivered
Discovery and search
An indexer for transfers, sales and metadata across supported collections, with search, filters by trait and price, and refresh of stale metadata.
04Delivered
Auctions and offers
English and Dutch auctions, collection-wide and trait offers, and bundle sales, each with clear rules for ending, extending and settling.
05Delivered
Trust and moderation tools
Verified collection badges, report queues, delisting of stolen or infringing items and detection of suspicious wash trading.
Early decisions
Technical decisions we settle early in NFT marketplace development.
01Decided
Reuse or write the exchange contract
Reusing an audited protocol saves time and audit cost and improves compatibility with aggregators; a custom contract makes sense only for genuinely new trading mechanics.
02Decided
Open or curated
Anyone can list any collection, or only approved creators can. Open marketplaces need far more moderation and spam filtering.
03Decided
Royalty policy
Whether the venue enforces creator royalties, makes them optional or supports on-chain enforcement, and how that is presented to buyers and creators.
04Decided
Payment options
Native tokens, wrapped tokens for offers, stablecoins, or card payments through a regulated on-ramp partner for buyers without crypto.
05Decided
Chains and aggregator support
Which networks you index and whether your listings are exposed to aggregators, which brings liquidity but also price competition from other venues.
Engagement
How an NFT marketplace development engagement runs.
- 01Phase 1
Venue rules
We define who can list, fee and royalty policy, accepted payment tokens and moderation standards, because these choices drive contracts and backend design alike.
- 02Phase 2
Indexer and order service
The indexer and order validation service come first, tested against real collections on a fork, so listings never show items a seller no longer owns.
- 03Phase 3
Trading flows and interface
Listing, buying, offering, accepting and cancelling flows are built with simulation before signing and clear messages when an order becomes invalid.
- 04Phase 4
Launch with curated supply
Initial collections are onboarded deliberately, monitoring tracks failed fills and indexer lag, and moderation processes are staffed before opening listings more widely.
Fit
When a custom NFT marketplace is the right choice.
01Good fit
A niche with its own community
Music, gaming, sports or art communities need curation and features that general marketplaces do not offer.
02Good fit
Trading inside your product
Your game or platform issues tokens and wants trading to happen in your app, not elsewhere.
03Good fit
Specific fee or royalty terms
Your creators need royalty handling or revenue splits that major venues do not support.
Alternatives
When we recommend something other than a custom NFT marketplace.
01Consider
You only need to launch a collection
If there is nothing to trade until a collection exists, start with the contract, mint and metadata work.
Open register02Consider
A ready marketplace product
A pre-built NFT marketplace can be adapted quickly where custom trading mechanics are not needed.
Open register03Consider
Physical or service listings
If the goods are not tokens, a conventional multi-vendor marketplace is the simpler and cheaper build.
Open registerSigned orders keep listing free
Modern NFT marketplaces store listings as signed messages rather than on-chain transactions. The seller signs once, the order sits in a database, and the buyer’s transaction executes it. This makes listing free but means the backend must constantly check that orders remain valid.
Stale orders are the main bug class
A seller might transfer the token, revoke approval or list it elsewhere. If the marketplace still shows the old listing, buyers hit failed transactions. Indexing transfers and approvals in near real time, and re-checking before a fill, prevents most of these failures.
Moderation is part of the product
Open marketplaces attract copied collections, stolen items and wash trading. Verification badges, report handling and anomaly detection are as much a part of launch as the buy button, and they need staff and published policies.
Royalty policy is a positioning choice
Some venues enforce creator royalties, others make them optional to compete on price. Your policy tells creators and traders who the marketplace is for, so we settle it with you before building fee logic.
FAQ
Questions to resolve before the build.
01Why not write our own exchange contract?
Settlement contracts move valuable assets and are hard to get right. Established protocols have been audited and battle-tested, and aggregators already understand them. We write custom contracts only where the mechanics demand it.
02Do sellers pay gas to list?
Usually not. Listings are signed messages stored off-chain; gas is paid when a buyer fills the order. Sellers do approve the marketplace contract once per collection.
03How do you handle stolen NFTs?
Through reports, a review queue and the ability to hide or delist items. Policies should be published, and decisions logged, because both buyers and owners will contest them.
04Can buyers pay by card?
Yes, through a third-party on-ramp or payments partner that handles identity checks and card processing under its own licences. We integrate the partner rather than processing cards ourselves.
Related services
Services that pair with NFT marketplace development.
01Pairs with
Payment gateway development
Card checkout through a licensed on-ramp partner for buyers who do not yet hold crypto.
Open register02Pairs with
Next.js development
Server-rendered collection and item pages that load quickly and are indexable by search engines.
Open register03Pairs with
PostgreSQL database development
Indexed order, trait and sale data that supports fast filtering across large collections.
Open registerPrimary sources
References behind this page
Dated official documentation, standards, and research that support the factual claims on this page.
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How to read this page
Scope, cost and timeline figures are planning guidance until confirmed in a written proposal. Diagrams and screens are illustrations, not client deliverables, and source-code rights and handover follow the signed agreement. See the delivery process and the full disclaimer.
Next decision
Turn the brief into an accepted product scope.
Define outcomes, constraints, evidence, rights and handover before delivery begins.
Commercial rights, repositories, environments, documentation, acceptance and handover remain contract-defined.