diff --git a/CLAUDE.md b/CLAUDE.md
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index 0000000..dfd0605
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@@ -0,0 +1,72 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+A Graph Protocol subgraph indexing the Morpho Blue lending protocol across 15+ EVM networks. Built with AssemblyScript (graph-ts) and deployed to Graph Studio and Goldsky. Tracks lending/borrowing, market creation, liquidations, MetaMorpho vault interactions, and Chainlink price feeds.
+
+## Common Commands
+
+```bash
+yarn codegen                  # Generate types from ABIs + schema (runs automatically on postinstall)
+yarn build:<network>          # Build for a specific network (e.g., yarn build:mainnet, yarn build:sei)
+yarn deploy:studio:<network>  # Deploy to Graph Studio (e.g., yarn deploy:studio:base)
+./deploy-all.sh <version>     # Batch deploy to multiple networks
+yarn test                     # Run tests (matchstick-as)
+yarn lint                     # ESLint check
+yarn lint:fix                 # Fix lint issues
+yarn format:fix               # Fix formatting (Prettier)
+```
+
+Network names for build/deploy: `mainnet`, `base`, `celo`, `scroll`, `optimism`, `arbitrum`, `polygon-pos`, `fraxtal`, `ink`, `unichain`, `sonic`, `mode`, `corn`, `hemi`, `tac`, `sei`.
+
+Note: `build:arbitrum` uses network name `arbitrum-one`, `build:polygon-pos` uses `matic`, `build:mode` uses `mode-mainnet` internally — but the yarn script names use the simplified forms above.
+
+## Architecture
+
+**Event-driven model**: Blockchain events → Handler functions → SDK managers → GraphQL entities.
+
+### Key Source Directories
+
+- **`src/`** — Event handlers and core logic
+- **`src/sdk/`** — Manager classes that encapsulate entity business logic
+- **`src/initializers/`** — Entity creation/initialization for protocol, markets, Chainlink proxies
+- **`src/utils/`** — Helpers for math, rates, liquidation incentives
+- **`src/constants/`** — Chainlink feed address database
+- **`abis/`** — Smart contract ABIs (MorphoBlue, MetaMorpho, ERC20, Chainlink, etc.)
+
+### Core SDK Managers (`src/sdk/`)
+
+- **DataManager** (`manager.ts`) — Central orchestrator: creates transactions, updates protocol metrics, manages interest rates/fees/revenue, triggers snapshots
+- **PositionManager** (`position.ts`) — Tracks supplier/borrower/collateral positions and their lifecycle
+- **SnapshotManager** (`snapshots.ts`) — Creates hourly/daily snapshots of market and account data
+- **TokenManager** (`token.ts`) — Token entity management and USD price fetching via Chainlink
+- **AccountManager** (`account.ts`) — Account entity management
+
+### Event Handlers
+
+- **`morpho-blue.ts`** — Core protocol events: AccrueInterest, Borrow, Supply, Withdraw, Repay, Liquidate, FlashLoan, CreateMarket, SetFee, etc.
+- **`meta-morpho.ts`** — MetaMorpho vault events: Deposit, Withdraw, ReallocateSupply/Withdraw, SetCap, governance changes
+- **`meta-morpho-factory.ts`** / **`meta-morpho-factory-v1.1.ts`** — Factory events that create new vault data sources
+- **`public-allocator.ts`** — Public reallocation events
+- **`chainlink.ts`** — Price feed update handlers
+
+### Configuration
+
+- **`subgraph.yaml`** — Defines data sources (contracts) and templates (dynamically created sources for MetaMorpho vaults and Chainlink feeds)
+- **`networks.json`** — Contract addresses and start blocks per network. When adding a new network, add entries here for MorphoBlue, MetaMorphoFactory, MetaMorphoFactoryV11, and PublicAllocator
+- **`schema.graphql`** — GraphQL schema following the Messari lending protocol standard. Core entities: LendingProtocol, Market, Token, Account, Position, plus MetaMorpho-specific entities
+
+### Adding a New Network
+
+1. Add contract addresses and start blocks to `networks.json`
+2. Add `build:<network>` and `deploy:studio:<network>` scripts to `package.json`
+3. Add network-specific token price mappings in `src/fetchUsdTokenPrice.ts` if needed
+4. Add the network to CI matrix in `.github/workflows/ci.yml`
+
+## Conventions
+
+- Commit messages follow [Conventional Commits](https://www.conventionalcommits.org/) (enforced by commitlint)
+- Husky pre-commit hooks are configured
+- Prettier with 80-char line width and import sorting (`@trivago/prettier-plugin-sort-imports`)
diff --git a/src/meta-morpho.ts b/src/meta-morpho.ts
index 4d13761..2664d4e 100644
--- a/src/meta-morpho.ts
+++ b/src/meta-morpho.ts
@@ -122,6 +122,7 @@ export function handleAccrueInterest(event: AccrueInterestEvent): void {
 
   if (event.params.feeShares.isZero()) return;
 
+  mm.totalShares = mm.totalShares.plus(event.params.feeShares);
   mm.feeAccrued = mm.feeAccrued.plus(event.params.feeShares);
   const token = new TokenManager(mm.asset, event);
   // Convert to assets