Add Calculus DEX volume adapter on BSC#5797
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calculusfinanceofficial wants to merge 2 commits intoDefiLlama:masterfrom
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Add Calculus DEX volume adapter on BSC#5797calculusfinanceofficial wants to merge 2 commits intoDefiLlama:masterfrom
calculusfinanceofficial wants to merge 2 commits intoDefiLlama:masterfrom
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Add Calculus DEX volume adapter on BSC
Contributor
📝 WalkthroughWalkthroughA new TypeScript adapter for the Calculus DEX on BSC was added, computing daily opening volume by processing VaultCreated events, resolving token pair addresses via TOKENPAIR_REGISTRY multiCall (IDs 1–18), and aggregating reserves per token. Changes
Sequence DiagramsequenceDiagram
participant Adapter as Fetch Function
participant Registry as TOKENPAIR_REGISTRY
participant Contract as CALCULUS_CONTRACT
participant Balances as DailyVolume Accumulator
Adapter->>Balances: Initialize daily balances
Adapter->>Registry: multiCall token pairs (IDs 1-18)
Registry-->>Adapter: Return token0, token1 per pairId
Adapter->>Adapter: Build pairId → {token0, token1} map
Adapter->>Contract: Fetch VaultCreated event logs (filtered)
Contract-->>Adapter: Return VaultCreated logs
loop For each VaultCreated log
Adapter->>Adapter: Resolve token addresses via pairId
Adapter->>Balances: Add reserve0 to token0
Adapter->>Balances: Add reserve1 to token1
end
Adapter-->>Adapter: Return dailyVolume object
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Possibly related PRs
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The calculus adapter exports: |
treeoflife2
requested changes
Feb 3, 2026
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| export default { | ||
| version: 2, | ||
| adapter: { |
Member
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please add doublecounted: true as behind the scenes it's using the panckeswap lp for trades
| if (!pair) continue; | ||
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| dailyVolume.add(pair.token0, l.reserve0); | ||
| dailyVolume.add(pair.token1, l.reserve1); |
Member
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why do you add both tokens in volume calc?
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The calculus adapter exports: |
Contributor
Author
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Hi,
Thanks for the review and the comments.
We have just pushed a new commit adding:
`doublecounted: true`
to the Calculus volume adapter as requested.
Regarding the question about why both tokens are added in the volume
calculation:
Calculus is an LP management protocol built on top of PancakeSwap V3. When
a vault is created, the `reserve0` and `reserve1` values represent the
two-sided liquidity added to the underlying PancakeSwap pool. From our
perspective, this reflects the full notional trading activity involved in
opening the LP position.
Since this volume is derived from PancakeSwap LP activity and counts both
sides of the pair, we marked the adapter as `doublecounted: true` to make
this explicit and avoid any ambiguity.
Please let us know if you would prefer a single-sided volume representation
instead, and we can adjust the logic accordingly.
Best regards,
Calculus Team
…On Tue, Feb 3, 2026 at 9:59 PM tree ***@***.***> wrote:
***@***.**** requested changes on this pull request.
.
------------------------------
In dexs/calculus/index.ts
<#5797 (comment)>
:
> + // 3) Sum reserve0 / reserve1 as opening volume
+ for (const l of logs as any[]) {
+ const tokenPairId = Number(l.tokenPairId ?? l.args?.tokenPairId);
+ const pair = pairIdToTokens.get(tokenPairId);
+ if (!pair) continue;
+
+ dailyVolume.add(pair.token0, l.reserve0);
+ dailyVolume.add(pair.token1, l.reserve1);
+ }
+
+ return { dailyVolume };
+};
+
+export default {
+ version: 2,
+ adapter: {
please add doublecounted: true as behind the scenes it's using the
panckeswap lp for trades
------------------------------
In dexs/calculus/index.ts
<#5797 (comment)>
:
> + }
+ });
+
+ const logs = await getLogs({
+ target: CALCULUS_CONTRACT,
+ eventAbi: VAULT_CREATED_EVENT,
+ });
+
+ // 3) Sum reserve0 / reserve1 as opening volume
+ for (const l of logs as any[]) {
+ const tokenPairId = Number(l.tokenPairId ?? l.args?.tokenPairId);
+ const pair = pairIdToTokens.get(tokenPairId);
+ if (!pair) continue;
+
+ dailyVolume.add(pair.token0, l.reserve0);
+ dailyVolume.add(pair.token1, l.reserve1);
why do you add both tokens in volume calc?
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Overview
This PR adds a DEX volume adapter for Calculus on BSC.
Calculus is a PancakeSwap v3 liquidity management protocol. Users open managed vaults which deploy PancakeSwap v3 positions. Opening volume can be measured directly from on-chain vault creation events.
Volume Methodology
Daily volume is calculated using the
VaultCreatedevent:reserve0andreserve1emitted during vault creation are treated as opening trade volume.Chains
Notes
Checklist
pnpm test dexs calculusSummary by CodeRabbit