aPriori — Monad Research

aprMON — the smallest of Monad's four liquid-staking tokens by TVL, but read on-chain with the same rigor as the others.

Key takeaways

• aprMON follows the identical ERC-4626 measurement path as shMON and gMON — a direct on-chain convertToAssets() read via Multicall, not a third-party API.
• As the smallest of Monad's four tracked LSTs by TVL, it typically carries the thinnest secondary-market liquidity of the group.
• The indexer's best-effort design means a temporary read failure serves the last-good cached figure rather than showing a blank or zero value — true for aprMON the same as the other three.

What it is

aPriori issues aprMON, another ERC-4626 liquid-staking vault for MON — deposit MON, receive aprMON, and the vault's exchange rate climbs as staking rewards accrue while aprMON itself stays usable elsewhere in DeFi.

How it's measured

Same direct on-chain read as shMonad and Magma: a batched Multicall reads `totalSupply()`, `totalAssets()` and `convertToAssets(1e18)` on a regular cadence, with the same automatic fallback to a plain division if the preferred call fails. The rate is snapshotted hourly into the same historical store all three ERC-4626 LSTs share, and APY is derived the same way — annualized real rate growth over the widest available window up to 7 days, returned as no figure at all rather than a guess if there isn't yet enough growth or history to compute one honestly.

Risks

aPriori is currently the smallest of Monad's four LSTs by TVL, which typically means the thinnest secondary-market liquidity of the group — a wider gap between its true redemption rate and what a DEX sale would actually realize during a fast move, purely as a function of size rather than any flaw specific to the protocol. The same validator-level risk (slashing, downtime) applies as with any Monad LST.

FAQ

Is aprMON measured the same way as shMON and gMON?

Yes — identical methodology: a direct on-chain convertToAssets() read via Multicall, hourly rate snapshots, and APY computed from real observed rate growth over up to a 7-day window. All three are ERC-4626 vaults read the same way; only Kintsu's sMON differs.

Why is liquidity for aprMON thinner than for shMON?

It's currently the smallest of Monad's four tracked LSTs by TVL — smaller size generally correlates with thinner secondary-market DEX liquidity, meaning a bigger potential gap between the true on-chain redemption rate and what selling into the market would actually realize during a fast move.

Sources: GET /v1/defi/staking — NullTerminal

Last reviewed 2026-07-08. More Monad research.

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