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Build your feed id

Build Your Feed ID

To use Pragma V2, you first need to construct your feed ID based on the specific data you require. The feed ID is a packed encoding of the asset class, feed type, feed variant, and pair ID.

Asset Class​

The first two bytes of the feed ID represent the asset class. Below is a list of available asset classes. More will be added based on demand.

Asset ClassEncoding
CRYPTO0x0000

Feed Type​

The following byte is reserved for the feed type. Currently, only SPOT is supported, but additional feed types are planned.

Feed TypeEncoding
SPOT0x00
TWAP0x01
REALIZED VOLATILITY0x02
OPTIONS0x03
PERP0x04

Feed Type Variant​

The next byte specifies the feed type variant.

Feed Type VariantEncoding
UNIQUE0x00

Pair ID​

Below is the list of available ticker pairs, along with their pair ID, decimals, mainnet availability, and risk level.

TickerPair IDDecimalsMainnetRisk
BTC/USD0x4220a04d5043c48✅L
ETH/USD0x454e5f9a0a2c248✅L
WBTC/USD0x572f26b85070a4e48✅M
WBTC/BTC0x572f26b8505427438✅M
BTC/EUR0x42209c98c4d6d28✅L
WSTETH/USD0x59b5ad29d7e28e80e44848✅M
LORDS/USD0x4f080d2de3cfebdbe4c8✅H
UNI/USD0x5544b51e220f548✅M
STRK/USD0x537b7d79bbab0c648✅L
ZEND/USD0x5a5565c82ebcf69c8✅H
NSTR/USD0x4e67c5a3a95b9c148✅H
EKUBO/USD0x477a0c2f264f56ce948✅H
USDT/USD0x55691d82482b94146✅L
DAI/USD0x44322ef3fbf2d48✅M
USDC/USD0x55691d7069d067f46✅L
LUSD/USD0x4c820c85d853c5048✅H

Example​

To retrieve the SPOT MEDIAN UNIQUE feed for BTC/USD, the corresponding feed ID would be:
0x000000000000000000000000000000000000000000000000004220a04d5043c4