Base stock token swaps: buy and sell checks

What Base can quote

Unify compares same-network swaps, supported USDC bridges and exact Coinbase-listed stock contracts. Support is established per exact contract, amount, wallet, recipient and live quote; it is not a blanket promise for all tokens.

Uniswap V3, Aerodrome / Slipstream, reviewed V2 deployments, eligible Uniswap v4, Curve and Balancer paths compete where a valid pool is found. Split paths and wallet-supported atomic cross-DEX candidates are compared by net output, not assumed cheaper.

Network costs and protected output

ETH pays Base gas. L1 data fees and approval envelopes are included in independent cost checks. Preconfirmations are not final receipts.

Compare net value after gas and separately paid fees. Embedded pool and bridge fees are already reflected in output and must not be subtracted twice. Best net, Smart, Fastest and Fewer steps can select different valid paths; missing timing does not mean instant settlement.

Stocks: separate buy and sell checks

Base B20 shares use issuer multipliers. Trading halts and transfer participants must be checked for the selected buy or sell path; a ticker, logo or reference value is not sufficient.

A listed token can be valued without an executable swap. Review the direction, exact input, quoted output, protected minimum and issuer check time in Convert. Stale quotes require a refresh. No permission check overrides regional or issuer restrictions.

Portfolio to one destination

Quote each source independently. Eligible same-source-network groups can also be compared through USDC collection and one bridge. This option is offered only when estimated net output improves after all step costs. Other networks stay separate; funds are not pooled with other users.

Each step requires a current wallet review. Source completion does not prove bridge delivery. If a final stock swap pauses, continue from the delivered token without sending a second bridge.

Discoverable Base issuer catalog

127 issuer-listed contracts · metadata snapshot 2026-10-10. These pinned contracts are discoverable metadata, not a list of guaranteed liquid buy/sell routes. The issuer and live pool must be checked again in the app. Token units and share-equivalent quantities may differ.

Official Coinbase contract registry ↗

Compare a current quote

The widget is quote-only and requires a public address for route eligibility. It cannot approve tokens, connect a wallet or send a transaction. There are no fabricated “live” prices on this guide.

Review in Convert ↗

Before approving a move

1. Match the network and exact token contract, not just its ticker.
2. Confirm your connected signing account and destination recipient. A custom recipient must be supported by the chosen route.
3. Keep enough network gas for allowances and execution. Read both estimated output and protected minimum.
4. Refresh an expired quote; a refresh is not a wallet approval. Raising slippage does not create liquidity or bypass an issuer policy.
5. Review the wallet transaction and allow only the intended spender and amount.

If a route pauses after submission

Use the recorded transaction hash and its exact chain explorer. An approval is only permission, and a successful source transaction does not establish destination receipt. Do not repeat a submitted source transfer merely because an RPC is slow.

Open Recover moves or the saved checkpoint. If bridge delivery is proven but the final swap is unavailable, the delivered token stays in the receiving wallet. A new final-swap review must use the current balance, recipient and issuer permissions; it must not send a new bridge. Dismissing a notice does not cancel an on-chain transaction.

Related guides

Base routes · Robinhood routes · Arbitrum routes · Arc routes

Base stock tokens · Robinhood stock tokens · Fees · Safeguards