Issues

• Incorrect block author extraction on parachains with multiple PreRuntime digest logs (e.g., Asset Hub)

  paritytech/substrate-api-sidecar#1901 · Filter by author TarikGul opened on Feb 18, 2026

• Sidecar fetch failed

  paritytech/substrate-api-sidecar#1889 · Filter by author Joy91-Lin opened on Feb 5, 2026
  2

• Deeply nested utility.batch calls in blocks endpoint

  Low Priority
  paritytech/substrate-api-sidecar#1888 · Filter by author Imod7 opened on Feb 4, 2026

• No items under pallet returns an error

  paritytech/substrate-api-sidecar#1885 · Filter by author Imod7 opened on Jan 29, 2026

• coretime endpoints are missing in Polkadot & Paseo chain

  paritytech/substrate-api-sidecar#1883 · Filter by author Imod7 opened on Jan 28, 2026

• Unable to find Call with index [218, 168] - Westend Assethub block 13440239

  paritytech/substrate-api-sidecar#1881 · Filter by author jwbd1 opened on Jan 26, 2026
  4

• Cleaner middleware for response formatting when it comes to useRcBlock, and format option

  paritytech/substrate-api-sidecar#1876 · Filter by author TarikGul opened on Jan 21, 2026

• /pallets/assets/{assetId}/asset-info ignores at param

  paritytech/substrate-api-sidecar#1875 · Filter by author bee344 opened on Jan 20, 2026

• Missing hash field in block header response when using useRcBlock=true

  paritytech/substrate-api-sidecar#1855 · Filter by author eugypalu opened on Dec 11, 2025

• get transaction by extrinsic hash

  paritytech/substrate-api-sidecar#1824 · Filter by author timlanahan opened on Nov 7, 2025
  5

• Fee calculation not supported for local or dev network

  paritytech/substrate-api-sidecar#1819 · Filter by author tried2bwhatuwantme2b opened on Nov 3, 2025
  6

• Block Hash Mismatches from Public Sidecar Instance on Kusama Asset Hub

  paritytech/substrate-api-sidecar#1803 · Filter by author Imod7 opened on Oct 21, 2025
  1

• Polkadot Asset Hub Migration Checklist

  paritytech/substrate-api-sidecar#1794 · Filter by author TarikGul opened on Oct 8, 2025
  

• FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

  paritytech/substrate-api-sidecar#1730 · Filter by author pmensik opened on Aug 21, 2025
  1

• Eth address withdrawals/deposits

  paritytech/substrate-api-sidecar#1728 · Filter by author Jan-Jan opened on Aug 14, 2025
  1

  

• Stability under heavy load

  paritytech/substrate-api-sidecar#1717 · Filter by author rvalle opened on Jul 24, 2025
  7

• BlocksService fails with "GeneralExtrinsic does not have signature implemented" for chains with v5 General Extrinsics

  I2 - Bug 🐜I8 - Enhancement
  paritytech/substrate-api-sidecar#1712 · Filter by author 0xjeremyfrank opened on Jul 23, 2025
  2

• Multichain instances could expose all endpoints for all chains connected

  I8 - EnhancementP7 - Nice to HaveQ3 - Medium
  paritytech/substrate-api-sidecar#1696 · Filter by author filvecchiato opened on Jul 14, 2025

• Question: Polkadot Mainnet AssetHub Migration Configuration

  paritytech/substrate-api-sidecar#1694 · Filter by author pc-quiknode opened on Jul 8, 2025
  3

• Asset Hub Migration: Remaining Tasks for Single Instance Multi Chain Support

  paritytech/substrate-api-sidecar#1693 · Filter by author TarikGul opened on Jul 7, 2025
  3

• @substrate/calc 0.3.2 adds a regression to calculation payouts

  paritytech/substrate-api-sidecar#1679 · Filter by author TarikGul opened on Jun 16, 2025

• get block 26170978 (polkadot mainnet) fail at v19.3.1

  paritytech/substrate-api-sidecar#1672 · Filter by author BomaxNogle opened on Jun 11, 2025

• SAS_SUBSTRATE_MULTI_CHAIN_URL as an internal Load balancer

  paritytech/substrate-api-sidecar#1661 · Filter by author TarikGul opened on Jun 8, 2025

• Add unbonding queue endpoint

  paritytech/substrate-api-sidecar#1647 · Filter by author Imod7 opened on May 9, 2025

• StakingInfo returns double amount of eras in claimed

  paritytech/substrate-api-sidecar#1642 · Filter by author Imod7 opened on Apr 25, 2025