Polymarket BTC 5-min Market Indexer

Envio HyperIndex for Polymarket's "BTC Up or Down 5m" markets on Polygon.

What it does

• OrderFilled events — indexes OrderFilled from the three CTFExchangeV2 contracts on Polygon. Derives a price from makerAmountFilled / takerAmountFilled (orientation depends on side).
• Market filter — only fills whose tokenId corresponds to an active Polymarket BTC 5-min market are persisted. Other tokens are dropped at the handler.
• Market sync (block handler) — every ~150 blocks (~5 min on Polygon), sweeps the past 24h of 5-min slots, calls https://gamma-api.polymarket.com/events/slug/btc-updown-5m-{slot} via the Effect API (cached, rate-limited), and upserts a Market entity per clobTokenId (Up + Down). Markets whose endDate is older than 24h + 5min are deleted.
• Window — start_block is set ~48h before the head; the Market table tracks the past 24h. So roughly the first day of fills is filtered out (no matching markets), and the second day is indexed against live markets.

Schema

• Market — keyed by tokenId (clobTokenId). Holds slug, conditionId, outcome ("Up" or "Down"), slotTimestamp, endDate.
• OrderFill — keyed by ${chainId}_${blockNumber}_${logIndex}, references Market.

Run locally

pnpm install
pnpm codegen           # after any schema.graphql / config.yaml change
TUI_OFF=true pnpm dev  # run indexer with AI-friendly logs

GraphQL: https://envio.dev/console

Other useful commands:

pnpm tsc --noEmit      # type-check
pnpm test              # vitest

Env

• ENVIO_API_TOKEN — required for HyperSync data source.

Notes