> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mobula.io/llms.txt
> Use this file to discover all available pages before exploring further.

# 🔧 February 8, 2026 - RPC Balance Verification & Fee Precision

> Post-swap RPC balance verification, improved fee precision with BigInt, and net loss seller handling

**TL;DR**: Wallet positions are now verified via RPC after swaps to ensure clients always see accurate balances, and fee calculations use BigInt for full precision.

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## RPC Balance Verification After Swaps

After a swap is processed, balances are now re-verified directly from the chain via RPC:

* Clients receive an accurate position update even when on-chain state differs from computed state
* Catches edge cases where computed deltas diverge from actual token balances

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## Fee Precision with BigInt

Total fees paid in native tokens are now computed using non-exponential integer strings:

* Eliminates floating-point precision errors in large-value fee calculations
* `totalFeesPaidNativeRaw` now uses lossless BigInt serialization

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## Net Loss Seller Handling

Improved transaction recipient logic to handle "net loss seller" patterns:

* Correctly attributes wallet positions even when the seller nets a loss across legs
* New test coverage for BSC swap recipient edge cases

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*Shipped by Delox*