# Glossary

> The terms these docs use, in one place.

**Attestation (quote terms).** Khalani's signature over a quote, carried in `build.terms`. It pins `/v2/build` to the quoted numbers for five minutes.

**Child intent.** The remainder of a partly filled intent, re-published with the parent's exact terms and a smaller amount. See [Intents and orders](/concepts/intents-and-orders/#partial-fills-form-a-chain).

**Collaborative solving.** Filling one order from several sources of liquidity, settled atomically or across partial fills. See [Collaborative solving](/concepts/collaborative-solving/).

**Commission.** Your fee, in basis points, paid to your commission wallet on the hub when an order settles.

**Deadline.** The time after which an order takes no more fills: build time plus your `orderTtl`.

**Deposit contract.** The contract on a spoke that holds deposited tokens and releases payouts and refunds. TRON has none: deposits go to a per-order deposit address, handled by an operated bridge service.

**Depositor.** The address that signs and sends an order's deposit. It is fixed at build.

**Flat fee.** A fixed fee per pair covering gas on the source and destination chains. It is charged in full, even on an order that never fills.

**Hub.** The chain that keeps Khalani's books. Orders are published, filled and settled there.

**Integrator.** You: the party that holds an API key and builds orders for its users.

**Intent.** A declaration of an acceptable outcome, authorized by its owner, with its source value escrowed. An order becomes one intent on the hub. See [Intents and orders](/concepts/intents-and-orders/).

**Just-in-time intent.** An intent a solver publishes and consumes in the same transaction, to supply the part of a fill that other legs don't cover.

**mToken.** The hub's one-to-one ledger entry for one token on one spoke, minted on deposit and burned on withdrawal.

**Netting.** Filling orders against each other, so each order's escrow pays another's output.

**Order.** What `POST /v2/build` creates: an order record, its signed terms, the transaction or deposit address that funds it, and the intent it becomes on the hub once funded.

**Partial fill.** A fill of part of an order at the order's rate. The rest stays open as a child intent.

**Rate.** What an order receives per unit of source, scaled by 10^18 (`intentOutcomeRate`). It applies to the amount left after fees, and every fill must meet it.

**Relayer.** The operated service that carries deposits from spokes to the hub, and withdrawals from the hub to spokes. The hub trusts what authorized relayers deliver.

**Root intent.** The first intent of an order. Its id is `traces.rootIntentId`, and a cancel signs against it.

**Settlement.** The one hub transaction that closes an order: it pays the filled part at the order's rate, refunds the unfilled share of the deposit after the flat fee, and takes the fees.

**Solution.** What a solver submits through intent sequencing: a graph of which escrow pays which output. The hub validates it and applies it atomically, every leg or none.

**Solver.** An independent agent, authorized to submit solutions, that fills intents and is paid its spread. See [Solvers and solver markets](/concepts/solvers-and-solver-markets/).

**Solver market.** The network of solvers competing to fill orders, seen from the side of the party publishing them. From a solver's side, the same book is an intent market.

**Spoke.** A chain your users hold tokens on. Its custody holds deposits and releases payouts: a deposit contract on most spokes, an operated bridge service on TRON.