For builders & researchers

Polymarket historical data: the full on-chain record, made queryable

Every Polymarket trade since 2020 settled on Polygon in public. CrowdIntel has indexed that record — 1.7B trade fills, tied to market resolutions and 3M wallet profiles — and serves it through a REST API, with the derived layer raw data can't give you: resolved PnL, adjusted win rates, suspicion scores, and funding clusters.

Short answer

The raw record is public — Polymarket's APIs and the Polygon chain — and anyone can index it. What takes months to reproduce is the processed layer: fills tied to resolutions, per-wallet resolved-outcome PnL, and funding-graph clusters over the whole history. CrowdIntel serves both the history (GET /api/v1/trades, per-wallet history endpoints) and the derived intelligence, on the Terminal plan ($99/mo).

What's in the index

•1.7B trade fills — every on-chain Polymarket trade since 2020, nothing sampled.
•Market resolutions — each market's final outcome, so history grades as WIN/LOSS, not vibes.
•3M wallet profiles — aggregate stats over each wallet's full record.
•USDC funding hops — who funded which wallet, the raw material for cluster detection.

The derived layer: what raw dumps can't tell you

A CSV of fills answers “what traded.” The questions that make money are “who was it, are they good, and are they alone?” — and those need computation over the whole history:

Resolved-outcome PnL
Every position graded against how the market actually resolved — not self-reported, not marked to a price snapshot.
Wallet win rates with sample-size shrinkage
A 9-for-10 newcomer stops outranking a 600-for-1000 veteran. Raw and adjusted rates both exposed.
8-signal suspicion scores
Bet size, category, odds extremity, funding clusters, timing clusters, win rate, and concentration — scored per wallet.
Funding-graph clusters
USDC funding hops traced since 2020 — which wallets share an operator, not just which wallets traded.
Entry-timing edge
How early a wallet enters before resolution, and how often those early entries win.

FAQ

How much Polymarket historical data exists?

Every Polymarket trade settles on Polygon, so the complete record is public. CrowdIntel's indexer has processed that record into 1.7B trade fills since 2020, tied to market resolutions and 3M profiled wallets, and keeps indexing as new blocks land.

Can I download raw Polymarket data in bulk?

The raw source is free and public: Polymarket's own APIs and the Polygon chain itself — anyone can run an indexer against them. CrowdIntel isn't a bulk raw-dump vendor; the API serves filtered, paginated queries plus the derived layer (resolved PnL, scores, clusters) that takes an indexing pipeline and a scoring engine to reproduce. If all you need is raw fills, index the chain. If you need the record made queryable and scored, that's what the API is for.

How do I query trade history via the API?

GET /api/v1/trades with at least one selective filter — a wallet, a market condition_id, or a bounded start/end window — returns cursor-paginated fills (limit up to 100 per page). GET /api/v1/wallets/{address}/trades walks one wallet's complete history. Both ship on the Terminal plan ($99/mo).

Is historical data enough to backtest with?

History plus resolutions is. Because fills are tied to how each market resolved, you can grade any historical entry as WIN or LOSS — the basis for the hosted Backtest API and for any harness you build yourself. See the Polymarket backtesting guide.

Query the history

Endpoint schemas in the API reference; plans on pricing. Related: backtesting on this history, the API-for-bots overview, or explore it visually on the whale leaderboard.