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Maintenance release rolling up the community and internal fixes accumulated since 2.51.4, plus two additive venue capabilities. All Core (816), Python SDK (260), and TypeScript SDK (86) tests pass. Backward-compatible; minor bump for the new opt-in features.

Added

  • feat(rain): fetchOrderBooks batch order-book fetch (#1693). RainExchange now implements the batch fetchOrderBooks(outcomeIds) surface (emulated by fanning out to the existing single-outcome fetchOrderBook) and declares the emulated capability, so Rain participates in the cross-venue batch order-book path.
  • feat(python): SuiBets wallet options (#1657). The Python SDK gains a SuiBetsOptions typed dict and threads wallet_address through the SuiBets constructor into the sidecar credential dict, matching the wallet-option pattern used by other venues.

Fixed

  • fix(hyperliquid): builder order attribution (#1658). createOrder accepts optional builder/builderFee params, appended to the signed payload in the correct key order (after grouping) with address/fee validation. Purely opt-in; existing order flows are unchanged.
  • fix(typescript): WS client connection timeout and retry (#1659). The TS SDK WebSocket client now applies a 10s handshake timeout and a 3-attempt retry loop with backoff, bringing it to parity with the Python client.
  • fix(limitless): wire unwatchOrderBook to WebSocket unsubscribe (#1692). unwatchOrderBook now forwards to LimitlessWebSocket.unsubscribe, mirroring the watchOrderBook override and the Polymarket pattern.
  • fix(kalshi): expose event metadata endpoint (#1611); sync Trade schema with v2 API drift (#1187, [#1282]); OHLCV normalizer + docs outcomeId param (#1429).
  • fix(suibets): model onchainState to restore accurate order-book liquidity (#1583).
  • fix(polymarket-us): prevent WebSocket connect hangs from a garbage-collected timeout (#1580).
  • fix(limitless): throw on watchOrderBook failure instead of silently swallowing it (#1581).
  • fix(gemini-titan): add terms-acceptance flow before order submission (#1326).
  • fix(smarkets): resolutionDate fallback (#1367).
  • fix(sdk): compute detailed execution prices locally (#1308); expose venue filters in fetch params (#1325); align order book field types (#1417).
  • fix(ts-sdk): export Polymarket_us alias (#1290); raise hosted embedded errors (#1307); require wallet for hosted build orders (#1314); forward apiSecret credentials (#1375); make hosted errors catchable by the base class (#1416); export public SDK option types (#1453); export ExchangeOptions from the package root (#1493); add documented event helper methods (#1492); make Position fields nullable to match Core (#1418); export version constant (#1579).
  • fix(python-sdk): route order-book unwatch via HTTP (#1324); accept wallet address in the Hunch client (#1376); route Myriad wallet address correctly (#1452); type api_secret in exchange options (#1511); export filter function types (#1546).

Installation

npm:

:::bash
npm install pmxtjs@2.52.0
npm install -g @pmxt/cli@2.52.0

PyPI:

:::bash
pip install pmxt==2.52.0

Links

What's Changed

New Contributors

Full Changelog: https://github.com/pmxt-dev/pmxt/compare/v2.51.4f...v2.52.0f

Source: README.md, updated 2026-07-18