Changelog — April 30, 2026

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2026-04-30 — Backtest Copy PnL: per-position metrics now match Polymarket byte-for-byte

• 97 % sub-penny match
• 100 % sub-$1 match
• 100 % sub-$10 match

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2026-04-30 — BYOB Snapshot: every wallet × every period in one read

• One request — no per-period round trips, no client-side stitching.
• Sub-second cached — 100 wallets × 6 periods returns in ~70 ms / ~150 KB. 1000 wallets × 6 periods in ~500 ms / ~1.5 MB.
• Optional period subset via ?periods=7d,30d to drop payload when you only need one window.
• Per-wallet error reporting — heavy whales that errored on the most recent refresh surface their failure reason inline, so your UI can render “X wallets retrying” instead of hiding gaps.

curl -H "x-api-key: $YOUR_KEY" \
  "https://api.polynode.dev/v2/copy-pnl/snapshot"

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2026-04-30 — /v2/onchain/markets/{token}/volume faster

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2026-04-30 — Wallet activity & redemptions: deep pagination unlocked

• offset past 1000 now works. Previously, pagination beyond the first 1000 records returned empty results regardless of how many records existed. You can now walk a heavy redeemer’s full history with offset=1000, offset=2000, etc.
• No more silent truncation. Wallets with >1000 redemptions, splits, merges, or neg-risk conversions previously had results capped at 1000. The full record set is now returned.

# Walk a heavy redeemer's full history:
curl "https://api.polynode.dev/v2/onchain/wallets/{wallet}/redemptions?limit=1000&offset=0" \
  -H "x-api-key: $YOUR_KEY"

curl "https://api.polynode.dev/v2/onchain/wallets/{wallet}/redemptions?limit=1000&offset=1000" \
  -H "x-api-key: $YOUR_KEY"

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2026-04-30 — TypeScript SDK 0.9.7

• storage config option — pass 'memory' for an in-memory backend (no native dependencies), a file path for SQLite (default), or your own TradingStorage implementation.
• Auto-fallback — if better-sqlite3 isn’t available (Bun, Deno, edge runtimes), the SDK automatically falls back to in-memory storage instead of crashing.
• BunSqliteBackend — persistent SQLite storage using Bun’s built-in bun:sqlite. Zero native dependencies. Same schema, same persistence as the Node backend.
• Auto-detection — if you don’t pass a storage option, the SDK tries better-sqlite3 first (Node), then bun:sqlite (Bun), then falls back to in-memory. Just works in both runtimes.
• Exported interface — TradingStorage, InMemoryStorage, and BunSqliteBackend are all exported so you can use them directly or build custom adapters.

// Bun — auto-detected, no config needed:
const trader = new PolyNodeTrader({ /* storage auto-detects bun:sqlite */ });

// Bun — explicit:
import { PolyNodeTrader, BunSqliteBackend } from 'polynode-sdk';
const trader = new PolyNodeTrader({
  storage: new BunSqliteBackend('./trading.db'),
});

npm install polynode-sdk@0.9.7

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2026-04-30 — TypeScript SDK 0.9.5

• Fixed signer.getAddress is not a function crash — ensureReady() and linkWallet() could throw this error with viem WalletClient signers when Polymarket packages expect an ethers-style getAddress() method. The SDK now ensures getAddress() is always available on the normalized signer, regardless of which @polymarket/clob-client version you have installed.
• Fixed signer detection logic — a duplicate guard condition was allowing incomplete signer objects through, causing crashes instead of clean error messages.
• Hardened relay signer adapter — address extraction now handles additional wallet shapes during Safe deployment and approval flows.

npm install polynode-sdk@0.9.5

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2026-04-30 — BYOB (Bring Your Own Backtest) — precomputed leaderboards

POST   /v2/copy-pnl/wallets       body: {addresses[]}    add to pool (max 1000)
DELETE /v2/copy-pnl/wallets       body: {addresses[]}    remove from pool
GET    /v2/copy-pnl/wallets                              list pool
GET    /v2/copy-pnl/leaderboard   ?period=&sort_by=&order=&limit=&offset=&min_trade_count=&exclude_toxic=

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2026-04-30 — On-chain wallet/market trades: deep pagination unlocked

• Heavy wallets (e.g. 1M+ fills) now return correct, complete trade history
• Deep ?offset= queries return real data instead of empty arrays
• No SDK or query-shape changes required — same ?limit=&offset= parameters
• Lower latency on most queries

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2026-04-30 — Backtest Copy PnL: batch endpoint

POST /v2/copy-pnl/batch
{ "addresses": ["0x...", ...], "from": "...", "to": "..." }

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2026-04-30 — Backtest Copy PnL endpoint

GET /v2/copy-pnl/{wallet}?period=30d

• actual_pnl_usdc — the wallet’s cashflow PnL over the window
• backtest_copy_pnl_usdc — what a copier would have earned with friction
• slippage_amount_usdc — the dollar gap
• slippage_cost_rate_pct — friction as a percentage of actual PnL
• toxic_for_copying — true when the rate exceeds 15% (wallet’s profit relies on execution speed; copier won’t replicate)
• trade_count, applied_filters, sources, optional trades[] drill-down