Scope an Ethereum price API around the traded ETH instrument, quote currency and venue rather than treating all Ethereum-related values as one price.
ETH/USD spot, ETH/USDT spot and derivative contracts can have different price behavior. Keep them separately identifiable; staking metrics, network fees and token valuations require their own datasets and must not be inferred from an ETH quote.
Review asset aliases, decimal precision and source timestamps for each selected market. If a converted USD observation is produced, retain the conversion source and timestamp so downstream systems can assess its freshness.
Bring the proposed instrument list, source documentation and consumer workflow to a technical discussion. The agreed integration specification defines coverage, fields, usage permissions and acceptance tests.
| Instrument scope | Identify the exact underlying, source identifier, quote currency and intended use. |
|---|---|
| Consumer workflow | List trading platforms, charts, risk tools and applications that need the output. |
| Delivery contract | Agree protocol, quote fields, timestamps, source status and recovery behaviour. |
| Production review | Confirm source rights, integration ownership, test evidence and commercial scope. |
For digital assets, define who consumes the prices and what each system needs to reconstruct a usable quote. An application dashboard, broker platform and historical process can require different delivery rules even when they share one normalized instrument model.
{
"type": "quote",
"symbol": "BTCUSD",
"bid": "100.00",
"ask": "100.10",
"source_time": "2026-10-18T12:00:00.000Z",
"received_at": "2026-10-18T12:00:00.012Z",
"source_id": "example-source",
"status": "illustrative"
}Illustrative engineering example, not live prices or a published API contract. Confirm field names and delivery rules during integration.