Pure barter
Asset for Asset
Money never has to enter the deal.
Atomic settlement is live on Base mainnet
Build your own index.Set your terms.
Barterium is the negotiated-exchange marketplace for the onchain economy — Base-first, agent-compatible. Say what you want exposure to and the names you refuse; counterparties compete to deliver that exact basket of tokenized stocks in one atomic settlement, into your own wallet, after you sign.
- Market
- Tokenized stocks · Base
- Routes
- Cash · Barter · Basket
- Consent
- Two wallets · One deal
I SPEND500 USDCBase · all or nothing
01
I WANT EXPOSURE TO
01NVDAc40–50% of the budget
02MSFTcat least 20%
03AMZNcno more than 35%
I REFUSETSLAcRecorded on the request
Price is only one acceptable outcome
Unique assets deserve a wider market.
A normal listing asks one question: “How much?” An intent can ask the better question: “What would make this exchange worthwhile?”
Direct sale
Asset for Stablecoin
A familiar route when price is enough.
Mixed terms
Asset + Stablecoin
Use an adjustment to close the value gap.
“Find me anyone willing to trade my apartment for a smaller house within 50 km of Warsaw.”
The owner describes the outcome. The market discovers the route.
Broad intent becomes exact consent
Explore first.
Commit only at the end.
- 01
Publish possibilities
List what you have and every outcome you would seriously consider—not one rigid asking price.
- 02
Find compatible intent
The market compares acceptable outcomes, so counterparties can discover deals ordinary filters miss.
- 03
Resolve exact terms
A proposal names the assets, amounts, parties, chain, contract, fees, and deadline.
- 04
Approve and settle
Both humans review the same transaction before the approved settlement contract can execute it.
Negotiation is not authorization
Your intent can be broad. Your consent stays exact.
Finding a match does not move an asset. Both parties approve the resolved proposal, including the chain and application-approved settlement contract.
Intent engine
Describes offers, acceptable outcomes, constraints, owners, and negotiators across supported markets.
search · match · proposeMarketplace policy
Barterium restricts listed assets, mint addresses, chain adapters, and settlement contracts.
asset · adapter · contractAtomic settlement
The exact transfers execute together after both wallets authorize the same deal.
review · sign · settleCHAIN-ISOLATED TESTNET MARKETSNo asset?
No asset?
Start with ours.
Connect a testnet wallet, mint a valueless mock NFT, publish an intent, negotiate, and run the complete human-to-human exchange flow.
- 01Connect walletAuthenticate by signature
- 02Mint test assetsNFTs and stablecoins
- 03Make a dealConsent before settlement
The barter book is open