pyth

Use the HermesClient from @pythnetwork/hermes-client and call getLatestPriceUpdates with an array of hex feed IDs. The response includes parsed price, confidence, exponent, and publish time, which you convert with price × 10^expo.

Add pyth-solana-receiver-sdk to Cargo.toml, accept a PriceUpdateV2 account in your instruction, and call get_price_no_older_than with the Clock sysvar and a max age in seconds. Verify the account owner matches the Pyth receiver program ID.

On Solana, prices are consumed via Anchor CPI to the Pyth receiver program using PriceUpdateV2 accounts. On EVM chains, contracts call the Solidity IPyth interface and submit update data via updatePriceFeeds. Feed IDs are identical across all chains.

The price update account's publish time exceeds your max age parameter. Either increase the allowed staleness window or post a fresh price update from Hermes in the same transaction before consuming it.

Compute the confidence ratio as conf divided by the absolute price in basis points and reject prices above your threshold, typically 1-2%. For sensitive operations like liquidations, use the EMA price via get_ema_price_no_older_than.

The public endpoint at hermes.pyth.network allows roughly 10 requests per second, 5 concurrent connections, and up to 100 feeds per request. Production applications should use a dedicated endpoint from a Pyth data provider.