indent-sdk

Submit matched trades to Indent Layer clearing. Build an obligation, sign it, track its lifecycle.

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A venue owns matching. This package owns the shape of what leaves it.

Integration is deliberately shallow: a matching engine that produces a firm two-sided fill, and a signature from each side. No custody changes, no margin posted, no credit risk taken on the trades you submit.

git clone https://github.com/IndentLayer/indent-sdk
cd indent-sdk
node --test "test/**/*.test.js"
node examples/submit.js

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Turning a fill into an obligation

import { fromFill, typedData } from '@indent/sdk';

const obligation = fromFill({
  venue:  yourVenueAddress,
  buyer:  fill.buyer,
  seller: fill.seller,
  asset:  fill.asset,
  quantity: fill.quantity,
  price: fill.price,
}, { window: currentWindow, ttl: 120 });

const payload = typedData(obligation);
// hand payload to whichever wallet library you already use

typedData returns a plain EIP-712 structure. This package carries no signing dependency on purpose: the definition is the contract, the library is yours.

Obligations come back frozen. An object that has been shown to a counterparty should not be mutable afterwards.

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Lifecycle

Submitted ─┬─ Admitted ─┬─ Novated ── Netted ── Settled
           └─ Rejected  └─ Rejected

import { track, isFinal } from '@indent/sdk';

track(['Admitted', 'Novated', 'Netted', 'Settled']); // 'Settled'
track(['Admitted', 'Novated', 'Rejected']);          // throws

Submission is atomic. An obligation is either admitted and novated, or it is rejected. There is no state in which a venue believes a trade is cleared while Indent Layer does not, and track throws on an impossible sequence so a bad feed surfaces as an error rather than as a silently wrong position.

Once settled, an obligation is final. Nothing moves it again, including us.

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Related

indent-core	Netting, waterfall and position limits, with the maths
indentlayer.xyz/docs	The model behind all of it

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Status

Pre-mainnet. The clearing contracts are not deployed, so nothing here reaches a chain yet. The shapes are published first so venues can build against them and tell us where they are wrong.

MIT licensed.