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Five-minute reference price

Every oracle-dependent action uses Orakl’s twap function with a 300-second interval and at least 5 observations. getOraclePrice() returns that average rather than the latest individual round. The latest observation must also be no older than maxOracleAge. If the five-minute average is unavailable, Rondo fails closed: new Fixed and Pegged orders are blocked, as are Pegged quotes and fills. Existing Fixed fills and every cancellation remain available because they do not need an oracle read.

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Why maxOracleAge is 30 minutes

The current Orakl feeds normally update much faster than 30 minutes, while the wider window avoids halting PEG fills during a short feed delay. The configurable range is 5 minutes to 6 hours. The upper bound keeps freshness checks meaningful. Integrations must still use the stale result returned by getOraclePrice().

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Why minOrderAmount has a floor

fillOrder enforces “while an order still has at least minOrderAmount remaining, a partial fill must itself release at least minOrderAmount”. At zero that test is vacuous, so a normal-sized order could be chipped through one-wei fills. One wei as a minimum is no better. The floor is therefore expressed in the token’s own units rather than in wei:
This is two orders of magnitude under the deployed defaults. A wei constant would necessarily be wrong across markets whose base tokens use 18, 2, and 6 decimals. The remainder after a valid fill is deliberately unconstrained. If an order is already below a newly raised minimum, the partial-fill threshold is waived; changing the configuration must not freeze an existing small remainder into an all-or-nothing fill.