Wallet connection
MetaMask, Coinbase Wallet, and WalletConnect support on desktop and mobile, with clear help when a wallet fails.
Creators, brands, and Web3 startups get mint sites and marketplaces with wallets that connect, clear transaction states, and testnet QA, from $1,450.
100%
Flows tested on testnet first
90+
Mobile speed on mint pages
Teams we have built for:








The Problem
People put real money into every mint and purchase. When the site leaves them guessing, they blame the project, not the wallet or the network.
01 · Dead buttons
Buyers tap Connect Wallet on their phones, and nothing happens.
MetaMask, Coinbase Wallet, and WalletConnect get tested on desktop and mobile first.
02 · Double signing
Buyers see a spinner, sign again, and pay gas for nothing.
Each mint, listing, or purchase shows pending, confirmed, or failed, read from the chain.
03 · Untested contract
The contract hadn't run on a testnet under real conditions.
Contracts run on a public testnet like Sepolia, so launch night isn't the first test.
04 · Discord panic
Discord fills with error screenshots, even though most mints went through.
Clear status screens show buyers whether their mint worked, so they don't need to ask.
Your mint opens at 6 p.m. Someone taps Connect Wallet on their phone, and nothing happens. Others sign a transaction and stare at a spinner with no idea if it worked, so they sign again and pay gas on a second, failed attempt. The contract hadn't run on a testnet under real conditions. By 6:20, your Discord is full of error screenshots, and the drop feels broken, even though most mints went through.
We start with what the user sees at each step: connect, sign, wait, done. Wallet connection is tested on desktop and mobile wallets before the rest is built. Every mint, listing, or purchase shows a pending, confirmed, or failed state read from the chain. Contracts run on a public testnet such as Sepolia first, so launch day isn't the first real test.
Wallets that connect first time
Your buyers' MetaMask, Coinbase Wallet, and WalletConnect wallets are tested on desktop and mobile first.
Transactions people understand
Pending, confirmed, and failed states read from the chain, so your buyers don't sign the same thing twice.
Tested on a testnet first
Every contract call runs on Sepolia or another public testnet before real funds touch it.
Our NFT Build Process
You approve the wallet and transaction flows on a prototype, then mint and buy with test funds yourself before anything touches mainnet.
First comes a free call covering your collection or marketplace, chain, and contracts. You get a written review of the contract setup, a user-flow map, and a fixed-price proposal.
What's Included
Every build covers the on-chain parts and the web parts, because users judge both at once. These six parts show up in most projects, sized to your plan.
Compare Options
A no-code minting tool is quick for a simple drop, and an in-house team gives full control. Here's where each fits once real money and a community are involved.
| Feature | DeveloperLookBest fit | Mint tool | Own team |
|---|---|---|---|
| Planning | Contract review first | Tool defaults | Your team decides |
| Design and brand | Fully custom | Template based | Full control |
| Wallet experience | Tested on real devices | Basic | Depends on skills |
| Marketplace features | Built to your needs | Not supported | Long build |
| Testnet testing | Every flow, every plan | Rarely visible | You plan it |
| Speed to launch | 3 to 16 weeks | Same day | Months of hiring |
| Ownership | Your code and contracts | Often their contract | Yours |
| Cost | Fixed price from $1,450 | Free or a small fee | Salaries plus hiring |
Projects We've Built
NFT apps, dashboards, and crypto products that our team designed and built. The portfolio shows more projects by industry.
What Our Clients Say
Feedback from teams we have built websites and platforms for.
We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.
The mobile experience is probably my favourite part of the new site. We had spent a lot of time making sure the desktop version looked right, and the team kept pushing us to think about how everything would actually feel on a phone too. They were right. The navigation is clean, the interactions feel natural, and everything we’ve tested so far works exactly as it should. They also went through the links, forms, integrations, and other details more than once before launch, which I really appreciated. And even after going live, we could still reach out when something came up. The whole process felt friendly, organised, and surprisingly straightforward.
What I appreciate most is that the website is actually easy for us to manage now. We can update content ourselves instead of sending a developer a message every time we need to change something small. They also paid attention to the technical SEO side, which mattered to us because we didn’t want a new website to create problems for the traffic we already had. I’ve probably asked more questions than I should have since launch, but every question has been handled patiently and without any fuss. The team is easy to work with, they explain things clearly, and when we need something changed, they focus on getting it done rather than making the process complicated.
1,000+
Projects shipped
10+
Years of experience
Top 3%
Upwork Top Rated Plus
5 stars
Average review score
Work Culture
Your users forgive plain design faster than confusing money flows. These habits keep every transaction clear and your contracts safe to ship.
Every mint, listing, and purchase runs on a public testnet before real funds are involved. Launch day isn't the first real test of your contracts.
We don't hold user private keys or seed phrases, and secrets stay out of browser code. We use well-maintained open-source wallet libraries.
Pending, confirmed, and failed transactions each get their own screen state. Your users know what happened without asking in your Discord.
For contracts that hold funds, we recommend an independent audit before mainnet. We plan your timeline around it instead of squeezing it out.
If a no-code tool fits your first drop, we'll tell you before we quote. We also won't promise sales, floor prices, or returns on any token.
Code, hosting accounts, and contract owner roles move to your team's wallet and accounts at launch. Every admin function comes documented.
Overview
DeveloperLook provides NFT marketplace development services for creators, brands, and Web3 startups. We build mint sites and marketplaces with wallet connection, contract integration, listings, and clear transaction states, all tested on a testnet first. Projects start at $1,450, take 3 to 16 weeks, and the scope is fixed in writing before we build.
DEVELOPERLOOK
Project facts · NFT Marketplace Development Services
Reviewed 30 Sep 2026 by Saimul Islam
Good fit
NFT creators planning a drop
Your collection is ready, the mint date is public, and you need a mint page on Ethereum or Polygon that holds up when everyone arrives.
Teams launching a marketplace
You want listings, offers, and profiles for a niche community, without forking a codebase nobody on your team understands.
Brands adding digital collectibles
You want customers to claim or buy collectibles without learning crypto first, so email sign-in and card payments matter.
Web3 startups with a live product
Your project needs a credible site with wallet connection, docs, and dashboards that match what the product actually does.
Agencies with Web3 clients
Your client wants an NFT build, and your team knows design but not wallets, contracts, or testnet deployments.
Not a fit
Exchange or custody service
You need a crypto exchange, custody service, or legal advice about your token. Those are regulated areas, and a qualified lawyer should guide them first.
Physical item auctions
You run timed auctions for physical items rather than tokens. Our Auction Website Development team builds bidding and payouts for that.
Goods or services marketplace
You're building a marketplace for physical goods or services, not tokens. Our Multivendor Marketplace Development team fits that better.
Small first drop
If your budget is below $1,450, or you're testing interest with a small first drop, a no-code minting tool is the cheaper way to run that test.
Not sure we're the right fit?
Send a two-line brief. We'll tell you honestly whether we're the right team.
Pricing
These are starting points in USD. Your final price depends on contract work, chains, and marketplace features, and you get a fixed proposal after a free discovery call.
For collections that need a branded site and a wallet-connected mint page, in 3 to 5 weeks.
$1,450one-time, USD
For marketplaces that need listings, offers, and profiles on one chain.
$4,400one-time, USD
For NFT marketplace platform development with custom logic, auctions, or several chains.
$8,900one-time, USD
For Agencies
You own the client relationship. We supply the Web3 engineering behind it: wallets, contract integration, and testnet QA. Quotes are fixed for resale, and your client mints with test funds on staging before mainnet.
White label: your client only ever sees your brand
Send the collection details, chain, contract status, and any marketplace features.
You get a contract review, a fixed quote, and launch dates.
We build, test on a testnet, launch, and document everything for your team.
Staging links, docs, and handover calls run under your agency's name.
Wallets, contracts, and testnet deployments handled by our developers.
One fixed quote per build keeps your markup steady.
Take on Web3 projects without hiring blockchain developers.
The Right Technology for Your Project
We use widely adopted Web3 libraries and standard contracts, so your project isn't tied to us or to one vendor. Most of our NFT builds run on the tools below.
FAQ
Straight answers on cost, timelines, contracts, royalties, wallets, and ownership.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
Your mint site starts at $1,450 with us, including wallet connection, a mint page, and testnet testing. Marketplace MVPs with listings, offers, and profiles start at $4,400, and custom Web3 platforms start at $8,900. Independent contract audits and gas fees are separate costs you pay directly.
A mint site takes 3 to 5 weeks, a marketplace MVP 8 to 12 weeks, and a custom platform 12 to 16 weeks. Contract readiness sets the pace, so we review your contract in week one. If an audit is needed, we build it into the date before you announce anything.
It's building the site or app where people connect a wallet to mint, list, buy, and sell NFTs. It also covers the on-chain parts a normal web build skips: contract calls, gas estimates, transaction states, and an indexer so pages load fast. NFT marketplace app development brings the same flows to iOS and Android, and you get the web and chain work from one team.
We build the website and integrate your contracts, and we can deploy standard NFT contracts based on OpenZeppelin's widely used libraries. Custom contract logic is scoped separately. For any contract that holds your buyers' funds, we recommend an independent audit before mainnet, whoever wrote it.
We work mainly with Ethereum and EVM networks such as Polygon and Base, and with MetaMask, Coinbase Wallet, and wallets that support WalletConnect. Each chain's public testnet comes first. If you need Solana or another non-EVM chain, we'll confirm the fit before quoting your project.
Royalties can be enforced inside your own marketplace contract, and we publish ERC-2981 royalty info so other marketplaces can read it. Outside your platform, honoring that info is each marketplace's choice, and some treat creator fees as optional. We explain the trade-offs before you set fees.
We don't ask for private keys or seed phrases, and your users sign every transaction in their own wallet. Secrets stay on the server, not in browser code. We test on a testnet first and recommend an independent audit for any contract that holds your community's funds.
Yes, your buyers without a wallet can pay by card through a crypto checkout provider. The NFT then goes to a wallet they connect or one created for them at checkout. Card payments add refund and compliance rules, so we choose the provider and flow with you before building.
Hire an outside team when you need a launch in weeks and don't plan to keep blockchain engineers on staff. Build in-house when your marketplace is your core product for years. You can also start with an NFT marketplace development company and hire once revenue justifies it.
Yes, the code, domain, hosting accounts, and contract owner roles move to your team's wallet and accounts at launch. We document every admin function for your team. Included support lasts 30 to 90 days, and a care plan can cover upgrades and new features after that.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
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Pick a 30-minute slot that works for you. We meet on Google Meet to align on goals, scope, and the right next step.