v2.43.20

Fixed

• Kalshi: Non-null assertion guards on WebSocket resolver maps + 30s connection timeout. Fixes #230, #231.
• Gemini Titan: Non-null assertion guards on resolver maps + 30s handshake timeout. Fixes #235, #236.
• Opinion: Non-null assertion guards on resolver maps + 30s connection timeout. Fixes #239, #249.
• Myriad: Non-null assertion guards on WebSocket resolver/rejecter maps. Fixes #240.
• Polymarket: Non-null assertion guards, bounded pendingTrades (1000/asset), userCallbacks dedup + cap (100), 30s connection timeout on both channels. Fixes #243, #245, #247, #334, #380.
• Polymarket US: Non-null assertion guards on WebSocket socket reference. Fixes #284.
• Polymarket: Guard Map.get() on candle buckets in normalizer. Fixes #321.
• Limitless: Non-null assertion guards on websocket resolvers/buffers + stale resolver cleanup on timeout + client orderClient/signer guards + normalizer param narrowing. Fixes #257, #290, #303, #372.
• Kalshi/Limitless/GoldSky: Remove unsafe as casts on nullable fields — use type predicates, null guards, optional chaining. Fixes #336.
• TypeScript SDK: Non-null guards on ws-client.ts send + 30s fetch timeout on router compareMarketPrices. Fixes #223, #281.
• Chainlink/Binance feeds: Add 30s connection timeout to WebSocket establishConnection(). Fixes #252, #253.
• Server: Replace console calls with structured logger in server/index.ts. Fixes #306, #308, #310, #311, #312.
• TypeScript SDK: Replace console.warn with structured logger in SDK router. Fixes #396.
• Utils: Non-null guards on market-utils.ts + max queue depth (1000) on throttler + watcher resolver safety. Fixes #269, #296, #329.

Performance

• Kalshi: Replace O(n²) concat() with push() in fetcher pagination (3 loops, MAX_PAGES=1000). Fixes #343.
• Opinion: Replace O(n²) spread with push() in fetcher pagination (MAX_PAGES=500). Fixes #347.
• Smarkets: Replace O(n²) spread with push() in fetcher pagination + map building (MAX_PAGES=100). Fixes #355.

---

Installation

npm:

npm install pmxtjs@2.43.20

PyPI:

pip install pmxt==2.43.20

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

What's Changed

• perf: replace O(n²) concat with push in kalshi fetcher by @realfishsam in #603
• fix: opinion fetcher perf + websocket safety by @realfishsam in #604
• fix: limitless non-null assertions + resolver leak cleanup by @realfishsam in #605
• fix: add 30s connection timeout to feed WebSockets by @realfishsam in #606
• fix: utils non-null guards + throttler max depth by @realfishsam in #607
• fix: guard Map.get() on candle buckets in polymarket normalizer by @realfishsam in #608
• fix: replace console.warn with structured logger in SDK router by @realfishsam in #609
• fix: gemini-titan websocket non-null guards + timeout by @realfishsam in #610
• fix: polymarket websocket safety + bounded buffers + timeouts by @realfishsam in #611
• fix: SDK non-null guards + router fetch timeout by @realfishsam in #612
• fix: replace console with logger in server/index.ts by @realfishsam in #613
• fix: myriad websocket non-null guards by @realfishsam in #614
• fix: kalshi websocket non-null guards + connection timeout by @realfishsam in #615
• perf: replace O(n²) spread with push in smarkets fetcher by @realfishsam in #616
• fix: remove unsafe as casts on nullable fields by @realfishsam in #617

Full Changelog: v2.43.19f...v2.43.20f

v2.43.19

Fixed

• Myriad: Read eventId instead of deprecated questionId in normalizer and utils. Fixes #556.

---

Installation

npm:

npm install pmxtjs@2.43.19

PyPI:

pip install pmxt==2.43.19

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

What's Changed

• fix: read eventId instead of questionId in myriad normalizer by @realfishsam in #602

Full Changelog: v2.43.18f...v2.43.19f

v2.43.18

Fixed

• Python SDK: Python 3.8-compatible annotations in errors.py (from __future__ import annotations). Fixes #561.
• Python SDK: Replace bare list[T] with List[T] in models.py for Python 3.8 compat. Fixes #562.
• Python SDK: Add missing exports (MarketFilterCriteria, EventFilterCriteria, SortOption, OrderSide, etc.) to __init__.py and __all__. Add return type annotations to stop_server()/restart_server(). Fixes #565, #471.
• Python SDK: Remove dangerous defaults (side="buy", amount=0) from create_order/build_order — now required keyword-only params. Fixes #466.
• Python SDK: Rename type parameter to order_type to avoid shadowing Python built-in. Add _convert_params_to_camel() for MarketFetchParams/EventFetchParams. Rename OrderBook.dt to datetime. Add concrete return types to 9 router proxy methods. Fixes #563, #449, #452, #456, #496.
• Python SDK: Add SubscriptionOption type, typed BuiltOrder.params/BuiltOrder.tx, MatchResult/EventMatchResult inheritance from unified types. Fixes #467, #500, #501, #497, #498.
• Server: Validate query params in feed-routes.ts with runtime typeof checks instead of unsafe as string casts. Fixes #558.
• Server: Validate parsed.method in WebSocket handler before use. Fixes #559.
• Limitless: Replace 9 non-null assertions on optional interface methods with guard-and-throw checks. Fixes #560.
• Hyperliquid: Correct allMids lookup key — use @{outcomeId} instead of #{encoding}, fixing prices hardcoded to 0.5. Fixes #441.
• Hyperliquid: Add quoteToken to HyperliquidRawOutcome interface. Fixes #555.
• Hyperliquid: Add builderFee to HyperliquidRawFill, users to HyperliquidRawTrade, make origSz optional. Fixes #547, #546, #520.
• Kalshi: Read liquidity_dollars instead of deprecated liquidity field. Fixes #554.
• Kalshi: Remove deprecated mututals_description from event normalizer. Fixes #443.
• Kalshi: Handle missing image_url in event normalizer. Fixes #442.
• Kalshi: Sync spec — add ts_ms to Order, remove client_order_id from Fill, add balance_dollars to GetBalance, add subaccount query param. Fixes #542, #517, #522, #433.
• Polymarket: Use camelCase endDateIso instead of snake_case end_date_iso in normalizer. Fixes #557.
• Polymarket US: Map cashValue to unrealizedPnL and currentPrice instead of hardcoding 0. Fixes #533.
• Gemini Titan: Use dedicated volume24h field instead of volume for 24h volume. Fixes #444.
• Gemini Titan: Type GeminiRawEvent.series as Record<string, any> | null to match live API. Fixes #439.
• Metaculus: Handle 403 api_forecasting_not_enabled error. Fixes #515.
• Baozi: Correct category field mapping — was returning tier instead of topic category. Fixes #540.
• Opinion: Update base URL from openapi.opinion.trade to proxy.opinion.trade:8443. Fixes #516.
• Smarkets: Sync spec — add CFTC jurisdiction, cftc object, original_price, original_bets, relax fullcover required fields. Fixes #543, #544, #545, #527, #528.
• GoldSky: Add 30s timeout to subscriber fetch. Fixes #512.
• Probable: Clean up orderBookResolvers after resolution to prevent memory leak. Fixes #550.
• TypeScript SDK: Add question getter, bestBid/bestAsk on MarketOutcome, type fetchMarketsPaginated params, sync getExecutionPrice to match core. Fixes #453, #454, #462, #470, #502, #503.

Changed

• Router: compareMarketPrices, fetchRelatedMarkets, and fetchHedges now accept optional params. Fixes #448.

Performance

• Metaculus: Replace O(n²) array.concat() with push() in fetchMarkets and fetchEvents pagination. Fixes #551, #552.

Infrastructure

• RPC endpoints: Add LIMITLESS_RPC_URL and OPINION_RPC_URL env var fallbacks for hardcoded blockchain RPC URLs. Fixes #507.
• Service URLs: Add PMXT_API_URL, POLYMARKET_GOLDSKY_URL, OPINION_API_URL, OPINION_WS_URL env var fallbacks. Fixes #508.

---

Installation

npm:

npm install pmxtjs@2.43.18

PyPI:

pip install pmxt==2.43.18

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

What's Changed

• fix: use Python 3.8-compatible annotations in errors.py by @realfishsam in #566
• fix: use Python 3.8-compatible generics in models.py by @realfishsam in #567
• fix: validate query params in feed-routes instead of unsafe casts by @realfishsam in #568
• fix: validate parsed.method in ws-handler before use by @realfishsam in #569
• fix: replace non-null assertions with guard checks in limitless by @realfishsam in #570
• perf: replace O(n²) concat with push in metaculus fetchMarkets by @realfishsam in #571
• perf: replace O(n²) concat with push in metaculus fetchEvents by @realfishsam in #572
• fix: clean up orderBookResolvers after resolution in probable websocket by @realfishsam in #573
• fix: add 30s timeout to GoldSky subscriber fetch by @realfishsam in #575
• fix: add missing exports and return types in Python init.py by @realfishsam in #576
• fix: add quoteToken to hyperliquid outcome interface by @realfishsam in #577
• fix: type GeminiRawEvent.series as object|null by @realfishsam in #578
• fix: remove deprecated mututals_description from kalshi normalizer by @realfishsam in #580
• fix: map cashValue to unrealizedPnL in polymarket_us by @realfishsam in #582
• fix: add env fallbacks for hardcoded RPC endpoints by @realfishsam in #583
• fix: use camelCase endDateIso in polymarket normalizer by @realfishsam in #584
• fix: handle 403 api_forecasting_not_enabled in metaculus by @realfishsam in #585
• fix: correct category field mapping in baozi normalizer by @realfishsam in #587
• fix: read liquidity_dollars instead of deprecated liquidity in kalshi by @realfishsam in #588
• fix: update opinion base URL to proxy.opinion.trade:8443 by @realfishsam in #591
• fix: sync Kalshi spec with upstream API changes by @realfishsam in #590
• fix: handle missing image_url in kalshi event normalizer by @realfishsam in #592
• fix: use dedicated volume24h field in gemini-titan normalizer by @realfishsam in #594
• fix: correct allMids lookup key in hyperliquid normalizer by @realfishsam in #595
• fix: type safety and SDK parity fixes in TypeScript client by @realfishsam in #596
• fix: sync smarkets spec with upstream API changes by @realfishsam in #597
• fix: sync hyperliquid spec with upstream API changes by @realfishsam in #599
• fix: type safety and naming fixes in Python client.py by @realfishsam in #600
• fix: add env fallbacks for hardcoded service URLs by @realfishsam in #589
• fix: remove dangerous defaults from Python create_order/build_order by @realfishsam in #598

Full Changelog: v2.43.17f...v2.43.18f

v2.43.17

Added

• Kalshi: Added cursor-aware event page fetching for bounded catalog ingestion. fetchEventsPage() returns a normalized event batch plus the next Kalshi cursor, and the underlying fetcher caps each upstream page to the remaining requested rows.

---

Installation

npm:

npm install pmxtjs@2.43.17

PyPI:

pip install pmxt==2.43.17

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.16f...v2.43.17f

v2.43.16

Fixed

• Baozi: Initialize order book resolver queues to eliminate unsafe non-null assertion on Map.get() in WebSocket handler. Fixes #261.
• Probable: Initialize order book resolver queues to eliminate unsafe non-null assertion on Map.get() in WebSocket handler. Fixes #264.
• Python SDK: Export FirehoseEvent and SubscribedAddressSnapshot from package entry point and __all__. Fixes #461.
• Python SDK: Generate correct class names for underscore-delimited exchanges (Polymarket_us -> PolymarketUS), with legacy alias preserved for backward compatibility.
• SDK generators: Preserve hand-written fetchOrderBook return type (OrderBook | OrderBook[]) and positional argument handling during client regeneration.

Added

• Regression tests for Baozi and Probable WebSocket resolver queue initialization.
• Python public export list regression test.

---

Installation

npm:

npm install pmxtjs@2.43.16

PyPI:

pip install pmxt==2.43.16

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

What's Changed

• fix: initialize Probable order book resolver queues by @iccccccccccccc in #510
• fix: initialize Baozi order book resolver queues by @iccccccccccccc in #509
• fix: export Python websocket return types by @iccccccccccccc in #511

Full Changelog: v2.43.15f...v2.43.16f

v2.43.15

Fixed

• Kalshi: Market normalization now preserves the venue's market-level title instead of replacing it with the parent event title. Kalshi market slugs now use the market ticker, and raw market status is carried through to the unified market.

---

Installation

npm:

npm install pmxtjs@2.43.15

PyPI:

pip install pmxt==2.43.15

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.14f...v2.43.15f

v2.43.14

Fixed

• Docs: Updated the fetchOrderBook API reference examples to show the recommended historical order book flow: fetch a market by slug, pass market_id / marketId, and select the side with params.outcome: "yes" or "no".

---

Installation

npm:

npm install pmxtjs@2.43.14

PyPI:

pip install pmxt==2.43.14

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.13f...v2.43.14f

v2.43.13

Fixed

• fetchOrderBook: params.outcome now accepts "yes"/"no" outcome aliases when the first argument is a market ID. The alias is resolved to the venue's actual outcome token ID before fetching live or historical order books, while raw outcome token IDs continue to work unchanged.

---

Installation

npm:

npm install pmxtjs@2.43.13

PyPI:

pip install pmxt==2.43.13

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.12f...v2.43.13f

v2.43.12

Fixed

• fetchTrades: Polymarket fetcher now forwards the limit parameter to the CLOB API. Previously, limit was silently ignored and Polymarket's API defaulted to 100 results per request — making it impossible to fetch more than 100 trades in a single call.
• fetchTrades: Removed hardcoded limit: 100 defaults from Kalshi, Myriad, and Smarkets fetchers. When no limit is specified, the upstream API's own default is used instead of our arbitrary cap.
• fetchTrades: Smarkets fetcher now respects the user-provided limit parameter instead of ignoring it entirely.
• fetchTrades: Added MAX_TRADES_LIMIT = 1000 validation across all venues (Polymarket, Kalshi, Smarkets, Myriad, Probable). Passing limit > 1000 now throws a ValidationError instead of silently returning fewer results.

---

Installation

npm:

npm install pmxtjs@2.43.12

PyPI:

pip install pmxt==2.43.12

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.11f...v2.43.12f

v2.43.11

Fixed

• Cleanup: Removed testDummyMethod stubs from BaseExchange.ts, TypeScript SDK client, and Python SDK client. Regenerated OpenAPI spec and method-verbs.

---

Installation

npm:

npm install pmxtjs@2.43.11

PyPI:

pip install pmxt==2.43.11

Links

• npm: pmxtjs
• npm: pmxt-core
• PyPI: pmxt

Full Changelog: v2.43.9f...v2.43.11f