Glossary

Atomic Amount

An amount expressed in a token's smallest unit. For six-decimal USDC, 1000000 means 1 USDC. Check the asset's decimals when setting a payment amount or spending cap.

Credit

Money your account can borrow for eligible purchases under accepted terms. Available credit is shown separately from cash. The account owner owes what is borrowed, including spending by an authorized agent. See Credit.

Crystallization

Recording accrued Tab charges as a LockedClaim onchain, reserving that amount for its holder. A voucher can also settle directly. The V2 reservation required before delivery is a separate operation. See Track Settlement.

Dexter Account

The self-custodial financial account behind Dexter Wallet. The owner keeps its assets, obligations, and activity when an agent or application changes. Dexter Wallet explains how the account and its controls fit together.

Dexter Connect

The SDK for adding account sign-in, owner Wallet actions, or agent authorization to your application. Dexter Connect explains which integration to use.

Dexter Wallet

The interface for managing your Dexter Account: money, assets, credit, activity, and agent permissions. Open it at dexter.cash/wallet using your passkey.

Dextercard

A separate card integration referenced in older CLI material. For current Wallet access, use the CLI connection instructions.

Exact Scheme

The x402 exact scheme pays the quoted amount for a request. The buyer's client uses the seller's payment requirements, including amount, recipient, asset, and network. See Pay From a Browser.

Facilitator

A service that verifies payment authorization and submits settlement transactions. Its supported networks and schemes determine which payment requests it can handle. See Facilitator.

Grant

Permission for an agent or session to act within defined limits. A spending grant can restrict the amount, seller, and expiry. See Agents and Permissions.

Indexter

Dexter's catalog of paid services. Listings bring together the provider, price, expected input and output, and available evidence from earlier checks. See Find and Compare Services.

Intent

A prepared action for a connected account. OpenDexter identifies a prepared purchase with an intentId; execution and status checks refer to that same request. See OpenDexter CLI.

Lifetime Cap

The total amount a Tab session may authorize before it needs replacement approval. Revolving capacity limits how much of that total can be outstanding at once.

OpenDexter

Dexter's connection for agent clients to discover services, make purchases, and use an authorized account. See OpenDexter for setup and paid-task examples.

Passkey

The credential you use to sign in and approve Wallet actions. Your device or passkey provider manages it. See Create and Access Your Wallet.

Receipt

A record of an action and its outcome. Read its status and transaction details to determine whether payment completed. A reservation receipt identifies a reserved obligation; a settlement receipt records payment. See Assets and Activity.

Reservation

An onchain record committing capacity to a specific Tab obligation. The V2 client confirms the exact signed voucher's reservation before releasing it, and the seller independently verifies that evidence before delivery. Funds transfer at settlement.

Revolving Capacity

The maximum amount that may be outstanding under a Tab at one time. Settled amounts release capacity for later purchases within the session's lifetime cap and expiry. See Tab Limits.

Revocation

Ending an agent's or session's permission to authorize further actions. Previously authorized payments or claims may still need settlement. See Close and Revoke.

Session Key

A key an agent uses to sign within an approved session's scope, expiry, and spending limits. The owner controls that permission through the Wallet; the agent holds the session credential used for its work.

Settlement

Transferring payment to its recipient onchain. The per-request seller example settles before returning the service. Tabs can accumulate authorized charges and settle later. Confirm the transaction and recipient transfer when reconciling payment.

Tab

A spending arrangement for repeated purchases from one seller under an approved cap and expiry. The agent signs cumulative vouchers; settlement pays the seller for the authorized amount. See Tabs.

Vault

The onchain accounts and program rules that enforce Wallet authority, spending constraints, and payment obligations. The Vault Reference covers addresses, SDK operations, and transaction formats.

Voucher

A signed authorization for a Tab's cumulative amount. For example, vouchers for 2,000 then 4,000 atomic USDC authorize a total of 4,000, rather than 6,000. See Cumulative Vouchers.

World ID

A proof that someone is a unique human while keeping their identity private. Dexter connects World ID verification to the Wallet and bridges identity roots to Solana. See World ID for verification steps and the bridge.

x402

An HTTP payment protocol: a server returns 402 Payment Required with payment requirements, and a compatible client supplies payment authorization on a retry. The Dexter SDK implements x402 version 2.