Chainlink TWAP

Starting August 7, 2026 at 00:00 UTC, Polymarket crypto up/down markets use Chainlink TWAP as the closing resolution reference:

The opening target / price-to-beat remains the same and is still served by the existing target price endpoints.

Which endpoints to use

Use target endpoints for the opening price:

curl "https://api.vatic.trading/api/v1/targets/timestamp?asset=btc&type=5min&timestamp=1785603000"

Use TWAP endpoints for the closing reference:

curl "https://api.vatic.trading/api/v1/twap/report?asset=btc&window=30&timestamp=1785603300"

Use the comparison endpoint when you want target, snapshot close, and TWAP close in one response:

curl "https://api.vatic.trading/api/v1/twap/resolve?asset=btc&type=5min&marketStart=1785603000"

Use recent comparisons for backtests and dashboards:

curl "https://api.vatic.trading/api/v1/twap/recent?asset=btc&type=5min&limit=50"