An indicative quote estimates terms that may be available. A firm quote expresses a more specific executable offer under stated conditions. The difference concerns commitment and completeness, not whether execution has already occurred.
What an indicative number can omit
A reference estimate may not include a particular taker, fully validated allowance state or a signed maker commitment. It can help a user explore amounts before requesting a transaction-ready offer.
In an RFQ flow, a maker can respond with terms for a precise trade. 0x's order structure shows how assets, amounts, permitted parties and expiry define that opportunity. Its RFQ guide explains the short-lived nature of maker commitments.
Firm does not mean unconditional
Consider a hypothetical offer of 200 B for 100 A, valid for one specified account until a given time. Another account cannot infer identical eligibility. Waiting beyond expiry does not preserve the original offer. Insufficient balance or missing permission can also prevent execution.
A quote may be transaction-ready without guaranteeing a fixed AMM output independent of state. Different providers use “firm” in different API and product contexts, so read the contract-level conditions and quote definition.
Compare the same stage of the process
An indicative screen from one service and a validated executable offer from another are not equivalent evidence. The first may be faster to obtain but contain fewer constraints; the second may reveal costs or restrictions absent from the preview.
For a useful comparison, record the quote type, requested assets and amount, taker assumptions, validity and output boundary. If one service updates those terms after authorization begins, compare the refreshed offer rather than an earlier preview.
Finally, keep both quote types separate from the actual fill. Settlement is the point where the authorized exchange changes balances. Even the strongest quote description cannot substitute for a successful execution record.
Sources & verification (3)
Source-check date is recorded in the article details. URLs are provided for manual verification. Use Copy to keep this page open.
- Orders — 0x Protocol 4.1 documentation
Version-specific order fields: token identity, amounts, maker/taker, expiry and RFQ.
https://docs.0xprotocol.org/en/latest/basics/orders.html - Understanding 0x RFQ (Request for Quote)
Dealer RFQ commitments and expiry window concepts; omit marketing statistics.
https://help.0x.org/articles/3310442497-understanding-0x-rfq-request-for-quote - Flow of an order
Intent submission, auction, solver execution and settlement lifecycle.
https://docs.cow.fi/cow-protocol/concepts/how-it-works/flow-of-an-order