ERC-7726: Common quote oracle

ERCs
1

For a while now we have been toiling on what is now a minimal standard for oracle value feeds.

Draft EIP

Some oracle implementations from the community: GitHub - alcueca/awesome-oracles: Common Oracle Specification and Adaptors
Some oracle implementations from Euler: GitHub - euler-xyz/euler-price-oracle: Euler Price Oracles, a library of immutable oracle adapters and components

This all probably started when I wrote this article about using value conversions instead of prices in smart contracts:

In very short, this is a minimal standard with a single function, from the spec:

getQuote

Returns the value of baseAmount of base in quote terms.

MUST round down towards 0.

MUST revert with OracleUnsupportedPair if not capable to provide data for the specified base and quote pair.

MUST revert with OracleUntrustedData if not capable to provide data within a degree of confidence publicly specified.

- name: getQuote
  type: function
  stateMutability: view

  inputs:
    - name: baseAmount
      type: uint256
    - name: base
      type: address
    - name: quote
      type: address

  outputs:
    - name: quoteAmount
      type: uint256

There is a bit more info on the spec, including the lack of a priceOf function.

Although due to process the discussion should take place here, where it is public and searchable, we also have a telegram group that you are welcome to join: Telegram: Join Group Chat

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