Changelog

Shipped, dated, in production.

2026-07-19

Reference wallet adapter published. @synfin/wallet-partylayer (v0.1.0) turns a PartyLayer-connected wallet into a ready WalletAdapter in about five lines, so an integrator writes no Canton-specific code to execute a swap non-custodially. It wraps the mainnet-proven non-custodial adapter (bundled, no extra runtime dependency). The one documented limitation is observePayout (reports the current balance, not the received-since delta). See the quickstart and the support matrix.
Queryable capability model. @synfin/client (v0.1.2) adds getCapabilities(): one canonical source for what wallets can do, that the docs support matrix is generated from (they cannot drift). A capability is marked collectable only with cited mainnet evidence.

Execution plans. POST /api/execute/plan: keyed, idempotent plans with the memo floor computed server-side and the quote numbers pinned. The SDK execution client (executePlan, track) drives a WalletAdapter you implement on your own wallet; the SDK ships the interface and the drivers, not a ready-made adapter. Proven end to end on devnet with a test wallet across COMPLETED, SLIPPAGE_FAILED, and REFUNDED; the reference PartyLayer adapter @synfin/wallet-partylayer is published, so execute is a few lines (see below).
Public developer docs at synfin.xyz/docs, with every example run against production, plus /llms.txt for AI agents.
Integrator fees on keyed quotes. feeBps and feeRecipient produce disclosed clientFees lines, and appliedSchema pins the versioned fee schema on every response.

API keys, metering, and rate limits on /api/quote: keyed access with X-RateLimit-* headers, block-not-bill 429s, and the honest 401 vs 503 taxonomy (an infra failure never reads as "your key is bad").
The live routing demo: live venue quotes, ranked by net receive, unavailable venues shown with their reason. Historical note: the demo has since been superseded by the Launch App at synfin.xyz/swap; its old /demo address redirects there.

The live quote API. GET /api/quote serving live cross-venue quotes with net-correct fee semantics: every venue's network fee shown with its real application direction (on_top vs deducted_from_give), ranking by worst-case net receive.

Live venue adapters. Quote aggregation across the integrated Canton venues (Tradecraft, Cantex, OneSwap; Nightly listed and returning when its provider ends maintenance).