Direct answer
Assessing indirect quotes requires four kinds of information: (1) the definition and quote orientation (which side is base vs. terms), (2) the data’s provenance (who produced it and under what quoting convention), (3) timeliness (timestamp, update cadence, and whether values are executable), and (4) quality checks (consistency, formatting, and sanity checks that catch failures). Without these inputs, you cannot reliably compare values or perform any calculation using them.
Mechanism and definition: what “indirect” quotes means
Start by defining how an indirect quote expresses a currency pair. In forex-style quoting, the “indirect” concept usually describes a convention where one unit of a base currency corresponds to an amount of the other currency, expressed through a conversion factor. The key data you need is not only the numeric rate, but the direction and convention that determines how to interpret that number.
Collect these inputs before any assessment:
- Quote orientation: confirm which currency is treated as 1 unit (the base) and which is expressed as the conversion amount (the terms).
- Quote type and side: decide whether you are using a mid value, bid, ask, or a provider’s specific derived value, and keep that choice explicit.
- Quote formula: write down the exact relationship you will use for any conversion or comparison.
Evidence and example: what to capture to “assess” a quote
A practical way to assess indirect quotes is to capture a small “quote record” with the minimum fields needed for independent verification.
Include:
- Provider or feed identifier (provenance): the source that publishes the rate, such as a data vendor feed, a platform quote stream, or a counterparty quote. This matters because quoting conventions and transformations can differ.
- Timestamp and time zone: the exact time the value represents, plus the time zone or a clear mapping rule.
- Update cadence: how frequently the provider publishes values, and whether the quote is continuously updated or sent in discrete updates.
- Instrument specification: the exact currency pair definition (e.g., which two currencies are involved) and the convention used by the source.
- Units and decimal precision: record formatting rules (number of decimals, pip-like precision, and rounding behavior).
Assumption for a calculation example (no real-time data): assume you have an indirect quote Q that represents “1 unit of base equals Q units of terms.” If you want to convert an amount A in base into terms, your computation depends on that stated definition: terms amount = A × Q. If your source uses a different orientation, the same number can imply the opposite relationship, producing a wrong result.
Limitations and risks: where assessments fail
Several limitations can invalidate an otherwise careful assessment:
- Timing mismatch: if bid/ask, mid, and conversion factors are generated at different instants, comparisons can be distorted even when each feed looks internally consistent.
- Non-executable values: an indicative or derived quote may not reflect executable prices, especially when liquidity changes.
- Direction errors: many issues come from confusing base vs. terms orientation; historical data may look “close,” but calculations fail systematically.
- Costs and execution effects: even if a quote is correct as a reference value, real outcomes depend on spreads, fees, and execution timing, so historical relationships do not guarantee future comparability.
Material failure mode to watch: mixing quote types (for example, using a mid reference as if it were a bid or ask) while applying a formula that implicitly assumes a different side. This can lead to persistent biases in any evaluation.
Verification and next question
To verify information about indirect quotes independently, you should:
- Reconstruct the quote formula from the recorded orientation and confirm that applying it to a test amount produces consistent results.
- Compare the same currency pair across at least two independent sources while aligning timestamps as closely as possible.
- Perform quality checks: confirm decimal precision, confirm direction, and flag abnormal values (for example, rates that imply impossible conversion magnitudes for the chosen conventions).
Next question to consider: “Which exact quote type and conversion convention is my source using?” That single detail usually determines whether any further assessment is meaningful. If you can state the formula, provenance, timestamp, and quote side precisely, you can explain indirect quotes clearly and check facts without relying on predictions.