A metals catalogue should preserve the metal, quotation unit, currency and product type for every series.
Gold, silver and other metals can have different precision and source coverage. Distinguish spot references, futures and broker CFDs; converting units or currencies requires a documented calculation and its own timestamped inputs.
Confirm the actual instrument list with the selected sources. Build acceptance samples per metal and session rather than assuming gold integration validates the whole catalogue; make unsupported combinations explicit in the API response or platform mapping.
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 precious metals, 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.