Issues

• Spec drift: metaculus — LOW: POST /comments/project/{project_id}/publish-bot-comments/ new admin-only endpoint (merged 2026-10-16)

  coreeffort: smallenhancementP3: lowspec-drift
  pmxt-dev/pmxt#2554 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: kalshi — LOW: GET /events/{event_ticker} gains optional exclude_markets query param (2026-10-15)

  coreeffort: smallenhancementgood first issueP3: lowspec-drifttype: inconsistency
  pmxt-dev/pmxt#2551 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: gemini-titan — LOW: POST /maker-rebate/payouts deprecated 2026-10-06; GET version is now preferred

  coreeffort: smallenhancementmaintenanceP3: lowspec-drift
  pmxt-dev/pmxt#2549 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: hyperliquid — MEDIUM: New userOutcome exchange actions (split, merge, mergeQuestion, negate) not implemented — users cannot redeem or convert outcome shares

  coreeffort: mediumenhancementP2: mediumspec-drift
  pmxt-dev/pmxt#2548 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: polymarket_us — MEDIUM: Tiered maker/taker fee schedule effective 2026-10-19 — pre-trade fee estimates and fee assertions will be wrong

  bugcoreeffort: mediumP2: mediumspec-drifttype: inconsistency
  pmxt-dev/pmxt#2546 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: gemini-titan — MEDIUM: POST /orders/history gains new filter body params (from, to, status, symbol) not in spec

  coreeffort: smallenhancementP2: mediumspec-drifttype: inconsistency
  pmxt-dev/pmxt#2544 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: limitless — MEDIUM: GET /orders/estimate-fees endpoint missing from spec; venue schema missing feeModuleType/feeModule fields

  coreeffort: mediumenhancementP2: mediumspec-drifttype: inconsistency
  pmxt-dev/pmxt#2543 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: gemini-titan — MEDIUM: Volume, categories, and combo contract endpoints missing from spec

  coreeffort: mediumenhancementP2: mediumspec-drift
  pmxt-dev/pmxt#2541 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: limitless — HIGH: COLLATERAL-venue orders require feeRateBps: 0 + pre-order USDC approval to feeModule (Oct 14 venue rollout, follow-up to #2521)

  bugcoreeffort: mediumP1: highspec-drifttype: inconsistency
  pmxt-dev/pmxt#2538 · Filter by author realfishsam opened on Oct 18, 2026

• Spec drift: kalshi — HIGH: GET /portfolio/balance moved to dedicated rate-limit bucket (1 req/sec on Basic/Advanced) — polling callers will receive 429s

  bugcoreeffort: smallP1: highspec-drifttype: inconsistency
  pmxt-dev/pmxt#2537 · Filter by author realfishsam opened on Oct 18, 2026

• FYI: pmxt is listed on Prediction Market Use Cases (optional badge)

  documentationeffort: smallP3: low
  pmxt-dev/pmxt#2533 · Filter by author rjsternberg-max opened on Oct 16, 2026

• CRITICAL: proxy-addr@2.0.7 — IP spoofing via IPv4-mapped IPv6 trust subnet (GHSA-jqcg-44mw-7w3h)

  bugcomponent: ts-sdkcoredependency-vulnerabilityeffort: smallP0: criticaltype: security
  pmxt-dev/pmxt#2531 · Filter by author realfishsam opened on Oct 12, 2026

• CRITICAL: handlebars@4.7.9 — JavaScript Injection via Own Property Check Bypass (GHSA-p8wg-vrv2-v86f)

  bugcomponent: ts-sdkcoredependency-vulnerabilityeffort: smallP0: criticaltype: security
  pmxt-dev/pmxt#2530 · Filter by author realfishsam opened on Oct 12, 2026

• CRITICAL: handlebars@4.7.9 — JavaScript Injection via AST Type Confusion in compile (GHSA-8r5x-fm3f-whwj)

  bugcomponent: ts-sdkcoredependency-vulnerabilityeffort: smallP0: criticaltype: security
  pmxt-dev/pmxt#2529 · Filter by author realfishsam opened on Oct 12, 2026

• Response drift: limitless — priceOracleMetadata object present in live GET /markets/active response but not accessed by normalizer

  coreeffort: smallenhancementP2: mediumresponse-drifttype: inconsistency
  pmxt-dev/pmxt#2528 · Filter by author realfishsam opened on Oct 11, 2026

• Response drift: kalshi — taker_side and fill side/action read before v2 alternatives; removal deadline May 2026 is past

  bugcoreeffort: smallP1: highresponse-drifttype: inconsistency
  pmxt-dev/pmxt#2527 · Filter by author realfishsam opened on Oct 11, 2026

• spec-drift [smarkets] MEDIUM: get_quotes bypassed via hardcoded URL — code comment claiming endpoint is "private" is inaccurate

  coreeffort: smallmaintenanceP2: mediumsmarketsspec-drifttype: inconsistency
  pmxt-dev/pmxt#2526 · Filter by author realfishsam opened on Oct 11, 2026

• spec-drift [rain] LOW: getPublicMarkets returns 8 new intermediate status values — normalizer only handles Live/Closed, intermediate markets invisible

  bugcoreeffort: smallP3: lowrainspec-drifttype: inconsistency
  pmxt-dev/pmxt#2525 · Filter by author realfishsam opened on Oct 11, 2026

• spec-drift [rain] LOW: getTransactions missing required skip/orderDirection params — SDK v2.0.0 may error on user trade fetches

  coreeffort: smallenhancementgood first issueP3: lowrainspec-drifttype: inconsistency
  pmxt-dev/pmxt#2524 · Filter by author realfishsam opened on Oct 11, 2026

• spec-drift [kalshi] P1: market.liquidity_dollars removed Oct 1 2026 — normalizer reads this field; fallback market.liquidity always returns 0 since Feb 2026

  bugcoreeffort: smallkalshiP1: highspec-drift
  pmxt-dev/pmxt#2523 · Filter by author realfishsam opened on Oct 11, 2026

• spec-drift [limitless] P1: POST /orders feeRateBps enforcement (Sep 23 2026) — all orders on fee-enabled markets return 400 FEE_RATE_MISMATCH

  bugcoreeffort: smalllimitlessP1: highspec-drift
  pmxt-dev/pmxt#2521 · Filter by author realfishsam opened on Oct 11, 2026

• Spec drift: hyperliquid — 7 POST /exchange action types missing (cancelByCloid, modify, batchModify, twapOrder, twapCancel, trailingStop, scheduleCancel)

  coreeffort: mediumenhancementP2: mediumspec-drift
  pmxt-dev/pmxt#2520 · Filter by author realfishsam opened on Oct 11, 2026

• Spec drift: hyperliquid — outcomeMeta questions field absent from public API docs — potential undocumented removal (see also #775)

  bugcoreeffort: smallP1: highspec-drifttype: inconsistency
  pmxt-dev/pmxt#2519 · Filter by author realfishsam opened on Oct 11, 2026

• Spec drift: gemini-titan — WebSocket GeminiWsBookTickerData missing c/C fields; GeminiWsOrderData missing e/m/P/a/h/n fields (2026-06 to 2026-09)

  bugcoreeffort: smallP2: mediumspec-drifttype: inconsistency
  pmxt-dev/pmxt#2518 · Filter by author realfishsam opened on Oct 11, 2026

• Spec drift: gemini-titan — GET /v1/prediction-markets/taker-rewards/summary missing from spec (added 2026-10-01; not in rewards namespace issue #2336)

  coreeffort: smallenhancementgood first issueP3: lowspec-drift
  pmxt-dev/pmxt#2517 · Filter by author realfishsam opened on Oct 11, 2026