Alpha tester guide.Base Sepolia testnet.

Thanks for joining the Crux alpha. Before mainnet we want to prove three things with real people, on a real chain:

• Batch auctions. A launch sells in one window (the creator picks 60 seconds, 5 minutes, 1 hour or 24 hours) and every filled bid pays one uniform clearing price.
• Limit bids and caps. You can cap the price you'll pay, and each wallet's deposit is capped by the creator.
• Intent trading. After a launch graduates, you trade its token by signing an intent. A solver fills it from the token's locked Uniswap V2 pool.

Use it like you would a real product, try to break it, and tell us what confused you.

Add Base Sepolia to your wallet (MetaMask: Settings → Networks → Add network → Add a network manually):

Network name

Base Sepolia

RPC URL

https://sepolia.base.orgCopy

Chain ID

84532Copy

Currency

ETH

Block explorer

https://sepolia.basescan.orgCopy

1. 01Test ETH from the Alchemy Base Sepolia faucet or the Superchain faucet. Some faucets ask you to sign in or hold a tiny mainnet balance; if one refuses, try the other. A few cents' worth of test ETH lasts the whole alpha.
2. 02Test USDC from faucet.circle.com: pick Base Sepolia, paste your address and request.
3. 03Show it in MetaMask: Tokens → Import tokens → paste Circle's test USDC address (6 decimals):
   0x036CbD53842c5426634e7929541eC2318f3dCF7eCopy

Launch a token (creators):

1. 01Click Launch in the top bar.
2. 02Fill in name and symbol. Keep the initial supply at 1,000,000,000.
3. 03Set a graduation target (e.g. $3 to $10). Tip: with 1B supply, a target divisible by 3 (like $3 or $9) lets one wallet at the cap fill the sale exactly.
4. 04Set Scheduled start (3+ minutes, so people can arrive) and Max allocation per wallet. The hint under it shows each wallet's deposit limit and how many buyers the sale needs.
5. 05Choose a 5 min batch window, click Deploy Token & Initialize Auction and confirm in your wallet. You land on the auction page: share that link with the cohort.

Bid (everyone):

1. 01Open the auction link. When the status turns Deposits open, the bid panel appears.
2. 02Type an amount, or tap 25%, 50% or MAX. MAX is the most you can bid: your test USDC balance or your remaining wallet cap, whichever is lower.
3. 03Optional: turn on Limit price and set the most you'll pay per token (the contract's maxPricePerToken). It rounds down to the nearest 1% price step. If the batch clears above your limit, your whole bid is refunded.
4. 04Read the Risk preview: your worst price, the minimum you receive, and what selling everything at graduation would return. Then click Submit batch bid. The first time, your wallet asks twice: approve the exact amount, then place the bid. Watch the Demand curve and the Projected clearing price move as others bid.
5. 05When the window closes, the Crux keeper settles the auction automatically within about 15 seconds (anyone can also press Settle). Then Claim tokens: your tokens at the clearing price plus any unused USDC. If demand missed the target, it cancels and you Claim refund in full.

On graduation, 30% of supply and half the raise seed a Uniswap V2 pool whose LP tokens go to 0x…dEaD, locked forever. Creators receive 70% of the 1% protocol fee at once; their share of the raise and their 10% of supply vest over 30 days.

1. 01On the home page Terminal card, pick a graduated token ($V3, $QC2 or a new one), or open a graduated launch's page and use Trade via intent.
2. 02Choose Buy or Sell and enter a small amount (or tap $0.01 / $0.05). Read the Risk preview: what you receive, the minimum signed into your order, the slippage and the cost of selling straight back.
3. 03Click Sign trade intent: approve the exact amount, sign the order (an EIP-712 signature, which is free), then submit it. Approving and submitting each cost a little test ETH. Your funds go into the settler's escrow.
4. 04Within about a minute, the solver's next batch swaps in the token's Uniswap V2 pool and delivers to your wallet; then the escrow settles. The screen shows Settlement confirmed.

A token marked not listed graduated recently and is waiting for the team to register it for intent trading (see Trust disclosures). Fees: a 0.30% solver spread plus Uniswap's 0.3% pool fee, both included in the quote.

An intent didn't fill. Every intent has a 10-minute fill deadline. If no solver fills it:

1. 01Open the home page Terminal card and scroll to My intents. Your order shows a countdown: Refund opens in…
2. 02About an hour after the deadline (roughly 70 minutes after you placed it), click Refund test USDC (or the token, for a sell) and confirm. Refunds always return to your own address; nobody else can redirect them.

MetaMask says “Requested resource not available” or hangs. Its Base Sepolia RPC is congested. Settings → Networks → Base Sepolia → replace the RPC URL with:

• “Not enough test USDC” → top up at faucet.circle.com. A transaction won't send → check you have test ETH.
• Basescan shows a different sender → if your wallet is a smart account (EIP-7702), your wallet provider's relayer may appear as the sender. The contracts still credit your address; the site shows a note when this applies.

This alpha is deliberately simple. You should know exactly what you're trusting:

• One solver. A single solver daemon run by the Crux team fills every intent. If it's down, intents don't fill and you refund after the deadline.
• A centralized settlement verifier. Escrow is released by an allow-listed verifier (the team's solver wallet), not by a cross-chain proof.
• Manual token registration. After each graduation, the team registers the token on the settlers before it can trade via intents. The owner key controls listings, verifiers and the fee treasury.
• Unaudited contracts, testnet only. Nothing here has been audited. Never use a wallet that holds real funds, and never share a private key or seed phrase with anyone, including us.

What you can verify yourself, on Basescan:

CruxFactoryV3 (launches)

0x4894…9cF0

CruxSettler (intent escrow)

0x570b…9e82

CruxDestinationSettler (fills)

0x300a…5822

Solver + keeper wallet

0x69E4…AD67

The most useful reports include:

• Your wallet address
• The transaction hash (Basescan link)
• The auction or page URL
• What you expected vs. what happened
• A screenshot
• Browser and wallet (e.g. Chrome + MetaMask)

Post reports in the channel your alpha invite came from. Confusing moments are as valuable as bugs: if you hesitated, tell us where.