generated: '2026-07-20'
method: searched
source: docs.pyth.network/SKILL.md, docs.pyth.network/price-feeds
test_environments:
  - name: Hermes beta
    type: testnet price service
    url: https://hermes-beta.pyth.network
    description: Testnet Hermes endpoint mirroring the public API for integration tests.
  - name: MockPyth
    type: local mock contract
    source: "@pythnetwork/pyth-sdk-solidity/MockPyth.sol"
    description: >-
      Solidity mock of the Pyth contract for unit tests — inject known price values and generate
      deterministic updateData without a live network.
  - name: Fortuna testnet
    type: Entropy testnet
    description: Testnet environment for Entropy (on-chain randomness) integration tests.
recommended_testing:
  - Hardhat mainnet fork pinned to a block with the real Pyth contract for integration tests.
  - Generate mock updateData with known prices for deterministic unit tests.
sample_feed_ids:
  BTC/USD: "0xe62df6c8b4a85fe1a67db44dc12de5db330f7ac66b72dc658afedf0f4a415b43"
  ETH/USD: "0xff61491a931112ddf1bd8147cd1b641375f79f5825126d665480874634fd0ace"
  SOL/USD: "0xef0d8b6fda2ceba41da15d4095d1da392a0d2f8ed0c6c7bc0f4cfac8c280b56d"
  USDC/USD: "0xeaa020c61cc479712813461ce153894a96a6c00b21ed0cfc2798d1f9a9e9c94a"
notes: >-
  Values above are published verbatim in the Pyth developer skill; they are canonical mainnet
  feed identifiers, not secrets. No test API keys are published.