Oracles
Oracle-style services bridge off-chain data and on-chain actions. On WAX, they are usually built as narrowly scoped services with clear operational and signing boundaries.
DelphiOracle on WAX
The main oracle pattern builders are most likely to encounter on WAX is DelphiOracle.
DelphiOracle is an open-source oracle system used on Antelope-based chains to publish off-chain price and market data on-chain. On WAX, it is relevant anywhere an application or service depends on externally sourced values being written to chain in a structured way.
Primary source:
Existing Guide
What to Think About
- data source quality
- endpoint redundancy
- signing and key isolation
- failure alerting
- rate limiting and retry behavior
- contract and write-frequency expectations
- how downstream apps will validate or consume oracle values