The product

One idea. Two kinds of evidence.

Use recorded markets to test a rule. Then, for compatible rules, watch new virtual results in Portfolio. The two records stay separate.

PaperMantis Builder historical strategy result and chart
Builder interface preview. Figures shown are illustrative virtual results.

Four ways to investigate a market

Start with the current market, test a rule against recorded history, compare candidates, then follow a compatible rule with virtual money.

Observe

See the market as it moves

Live Markets places Polymarket UP/DOWN quotes beside Binance spot prices and a chart. Observe; no real order is placed.

How it works
Live Markets interface with market quotes and a chart
Build

Test the rule in your head

Choose a market, UTC dates, entry conditions and a virtual stake. Builder replays recorded markets and shows the trades behind the result.

How it works
Builder strategy setup interface
Discover

Search a bounded set of rules

Set a market and narrow the preset rule grid. Compare candidates across time blocks; B4 may reorder the display but never changes candidate selection or the original B1–B3 rank.

How it works
Discover results interface
Follow

Watch what happens next

Save a compatible rule as a frozen virtual strategy. Portfolio tracks later paper trades separately from the historical backtest.

How it works
Portfolio virtual strategies interface

The boundary that matters

A smooth historical chart and later virtual trades answer different questions. Keep the label next to the evidence.

01 / Recorded history

Backtest

Builder and Discover apply rules to recorded markets under simulation assumptions. Review the chart, date range, individual trades and available data.

Historical simulation
02 / New markets

Virtual Portfolio

A compatible, frozen rule follows later markets using virtual money. It creates a separate record and never places a real-money order.

Forward paper observation

Try your own idea

Start with a recorded period, inspect the result, then decide whether a compatible rule is worth following virtually.

Get started