Keep the essentials close

The words behind the route.

A practical glossary for reading a quote, following a route, and understanding a wallet prompt.

AMM

An automated market maker uses a defined mechanism to price trades against liquidity in a pool. Different AMM designs use different pricing rules and ways of concentrating liquidity.

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Approval

An on-chain authorization that can establish or change a token allowance for a spender. An approval is distinct from connecting a website to a wallet.

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Bridge

A mechanism for moving assets or information between blockchain networks. Its design introduces dependencies beyond a same-chain transaction and may involve a different asset representation.

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Concentrated liquidity

Liquidity allocated within a defined price range. Capital outside the active range does not provide the same immediate trading depth as capital positioned around the current price.

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DEX

A decentralized exchange: a trading protocol or system that enables asset exchange through mechanisms such as liquidity pools or order books. The interface, routing layer, and execution venue can be separate components.

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DEX aggregator

A service or system that compares or combines liquidity across multiple sources. Its coverage, fees, route construction, and execution model affect the result it can offer.

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Gas

A unit of computational work used by networks such as Ethereum. The amount of gas consumed and the effective price per gas determine the transaction fee under the applicable fee mechanism.

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Liquidity pool

Assets held under a trading protocol’s rules and made available for swaps. The pool’s pricing design, current state, and active depth shape how much an order can receive.

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MEV

Maximal extractable value: value that can arise from including, excluding, or ordering transactions within the relevant execution process. Sandwich attacks are one harmful pattern associated with transaction ordering.

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Minimum received

A lower output boundary applied by a particular swap workflow. Its calculation and enforcement depend on the interface and execution method, and it should be distinguished from the estimated output.

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Multi-hop route

A swap path that uses one or more intermediate assets between the input and output tokens. Its usefulness depends on the available liquidity and total execution cost.

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Permit

A signature-based authorization scheme, often used to establish token permissions. The exact meaning depends on the standard or contract; a signature submission deadline is not automatically an allowance expiration.

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Price impact

The effect that a trade itself has on the execution price relative to a reference market or pool price. It depends on trade size and the liquidity available along the path.

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Quote

An estimate or offer for a proposed trade under stated conditions. A quote should identify the input, output, network, timing, costs, and execution constraints relevant to its use.

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RFQ

Request for quote: a process that asks liquidity providers or market makers for a trade offer. The terms and settlement mechanism can differ from a trade against an AMM pool.

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Router

A component that helps construct a path for a swap. Route discovery, transaction construction, and on-chain settlement can be handled by separate systems.

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Slippage

A difference between an expected trade result and the result achieved at execution. It is distinct from the effect that the trade itself has on the pool price.

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Slippage tolerance

An execution boundary chosen within a swap workflow, often expressed as a percentage. It does not reserve liquidity or guarantee that a submitted transaction will execute.

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Spender

The address authorized by a token allowance or permission scheme. It may differ from the address that receives the execution transaction in a routing integration.

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Split route

A path that divides a swap across multiple liquidity sources. Splitting can change price impact and execution costs; more paths do not guarantee a better result.

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Token allowance

The amount a particular spender is authorized to transfer under a token’s allowance rules. Disconnecting a website does not itself remove that on-chain authorization.

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Transaction receipt

A record used to inspect the result of a transaction after inclusion. A transaction identifier alone does not prove execution success or establish the final assets received.

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