[simplex]: fix docker build

sdk/packages/simplex/scripts/Dockerfile

@@ -2,7 +2,7 @@
 FROM node:22
 
 # Install dependencies required for builds
-RUN apt-get update && apt-get install -y python3 make g++ git curl protobuf-compiler --no-install-recommends && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y python3 make g++ git curl protobuf-compiler libprotobuf-dev --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
 # Create non-root user
 RUN groupadd -g 1001 simplex && \

sdk/packages/simplex/scripts/docker-compose.yml

@@ -37,6 +37,7 @@ services:
         command:
             - "--config.file=/etc/prometheus/prometheus.yml"
             - "--storage.tsdb.retention.time=30d"
+            - "--web.enable-admin-api"
         networks:
             - simplex-network
         ports:

sdk/packages/simplex/scripts/generate-proto.sh

@@ -69,6 +69,19 @@ rm -rf "$OUT_DIR"
 mkdir -p "$OUT_DIR"
 
 echo "Generating TypeScript from proto files..."
+# Locate well-known proto includes (wrappers.proto, descriptor.proto, etc.)
+WELL_KNOWN_PROTOS=""
+for candidate in "$(dirname "$(command -v protoc)" 2>/dev/null)/../include" /usr/include /usr/local/include; do
+	if [ -f "$candidate/google/protobuf/wrappers.proto" ]; then
+		WELL_KNOWN_PROTOS="$candidate"
+		break
+	fi
+done
+if [ -z "$WELL_KNOWN_PROTOS" ]; then
+	echo "Error: Could not find Google well-known proto includes (google/protobuf/wrappers.proto)"
+	exit 1
+fi
+
 protoc \
 	--plugin="protoc-gen-ts_proto=$PLUGIN" \
 	--ts_proto_out="$OUT_DIR" \
@@ -78,6 +91,7 @@ protoc \
 	--ts_proto_opt=useExactTypes=false \
 	--ts_proto_opt=forceLong=string \
 	-I="$PROTO_DIR" \
+	-I="$WELL_KNOWN_PROTOS" \
 	"$PROTO_DIR"/mpcvault/platform/v1/api.proto \
 	"$PROTO_DIR"/mpcvault/platform/v1/error.proto
 

sdk/packages/simplex/scripts/monitoring/grafana/dashboards/simplex.json

@@ -191,7 +191,7 @@
       "gridPos": { "h": 8, "w": 24, "x": 0, "y": 12 },
       "targets": [
         {
-          "expr": "sum by (chain_id) (increase(simplex_order_volume_usd_total[$__range]))",
+          "expr": "sum by (chain_id) (simplex_order_volume_usd_total)",
           "legendFormat": "chain {{chain_id}}",
           "instant": false,
           "range": true,
@@ -214,7 +214,7 @@
       "gridPos": { "h": 8, "w": 24, "x": 0, "y": 20 },
       "targets": [
         {
-          "expr": "sum by (chain_id) (increase(simplex_order_profit_usd_total[$__range]))",
+          "expr": "sum by (chain_id) (simplex_order_profit_usd_total)",
           "legendFormat": "chain {{chain_id}}",
           "instant": false,
           "range": true,

sdk/packages/simplex/scripts/monitoring/prometheus.yml

@@ -5,4 +5,4 @@ global:
 scrape_configs:
   - job_name: "simplex"
     static_configs:
-      - targets: ["simplex:9090"]
+      - targets: ["hyperbridge-simplex:9090"]

sdk/packages/simplex/src/bin/simplex.ts

@@ -248,10 +248,12 @@ interface FillerTomlConfig {
 		pendingQueue: PendingQueueConfig
 		logging?: LoggingConfig
 		watchOnly?: boolean | Record<string, boolean>
-		substratePrivateKey?: string
-		hyperbridgeWsUrl?: string
+		substratePrivateKey: string
+		hyperbridgeWsUrl: string
 		entryPointAddress?: string
 		solverAccountContractAddress?: string
+		/** Target gas units for EntryPoint deposits per chain. Defaults to 3,000,000. */
+		targetGasUnits?: number
 	}
 	strategies: StrategyConfig[]
 	chains: (UserProvidedChainConfig & { bundlerUrl?: string })[]
@@ -317,6 +319,7 @@ program
 				entryPointAddress: config.simplex.entryPointAddress,
 				dataDir: options.dataDir,
 				rebalancing: config.rebalancing,
+				targetGasUnits: config.simplex.targetGasUnits,
 			}
 
 			const configService = new FillerConfigService(fillerChainConfigs, fillerConfigForService)
@@ -489,6 +492,7 @@ program
 						exoticTokenAddresses,
 						hyperbridgeWsUrl: config.simplex.hyperbridgeWsUrl,
 						substratePrivateKey: config.simplex.substratePrivateKey,
+						dataDir: options.dataDir,
 					})
 					metrics.start(metricsPort, metricsHost)
 				}
@@ -557,6 +561,14 @@ function validateConfig(config: FillerTomlConfig): void {
 		throw new Error("Signer configuration is required via [simplex.signer]")
 	}
 
+	if (!config.simplex?.substratePrivateKey) {
+		throw new Error("simplex.substratePrivateKey is required")
+	}
+
+	if (!config.simplex?.hyperbridgeWsUrl) {
+		throw new Error("simplex.hyperbridgeWsUrl is required")
+	}
+
 	if ((!config.strategies || config.strategies.length === 0) && !allChainsWatchOnly) {
 		throw new Error("At least one strategy must be configured (unless all chains are in watchOnly mode)")
 	}

sdk/packages/simplex/src/core/filler.ts

@@ -95,8 +95,9 @@ export class IntentFiller {
 	}
 
 	/**
-	 * Initializes the filler, including setting up EIP-7702 delegation if solver selection is active on any chain.
-	 * This should be called before start().
+	 * Initializes the filler, including setting up EIP-7702 delegation and
+	 * depositing the target amount to the EntryPoint on chains where solver
+	 * selection is active. This should be called before start().
 	 */
 	public async initialize(): Promise<void> {
 		// Check which chains have solver selection active
@@ -123,6 +124,16 @@ export class IntentFiller {
 			if (!result.success) {
 				this.logger.warn({ results: result.results }, "Some chains failed EIP-7702 delegation setup")
 			}
+
+			// Ensure EntryPoint deposit covers target gas units on each chain
+			const targetGasUnits = this.configService.getTargetGasUnits()
+			for (const chain of chainsWithSolverSelection) {
+				try {
+					await this.contractService.topUpEntryPointDeposit(chain, targetGasUnits)
+				} catch (err) {
+					this.logger.error({ chain, err }, "Failed to deposit to EntryPoint at startup")
+				}
+			}
 		}
 	}
 
@@ -257,9 +268,6 @@ export class IntentFiller {
 
 		await Promise.all(promises)
 
-		// Withdraw any remaining EntryPoint deposits back to the solver EOA
-		await this.contractService.withdrawAllEntryPointDeposits()
-
 		// Disconnect shared Hyperbridge connection
 		if (this.hyperbridge) {
 			const service = await this.hyperbridge.catch(() => null)
@@ -500,18 +508,13 @@ export class IntentFiller {
 			)
 
 			try {
-				if (solverSelectionActive) {
-					this.contractService.ensureEntryPointDeposit(order).catch((err) => {
-						this.logger.error({ orderId: order.id, err }, "Background EntryPoint deposit top-up failed")
-					})
-				}
-
 				const execStartMs = Date.now()
 				const hyperbridgeService = solverSelectionActive ? await this.hyperbridge : undefined
 				const result = await bestStrategy.executeOrder(order, hyperbridgeService)
 				const execDurationSec = (Date.now() - execStartMs) / 1000
 				this.monitor.emit("orderTiming", { orderId: order.id, phase: "execution", durationSec: execDurationSec })
 				this.logger.info({ orderId: order.id, result }, "Order execution completed")
+
 				if (result.success) {
 					this.monitor.emit("orderFilled", { orderId: order.id, hash: result.txHash, volumeUsd: inputUsdValue.toNumber(), profitUsd, chainId: getChainId(order.source) })
 				}
@@ -548,6 +551,15 @@ export class IntentFiller {
 	}
 
 	private handleOrderFilledOnChain(commitment: HexString, filler: string, chainId: number): void {
+		// Top up EntryPoint deposit if we were the filler
+		if (filler.toLowerCase() === this.fillerAddress.toLowerCase()) {
+			const chain = `EVM-${chainId}`
+			const targetGasUnits = this.configService.getTargetGasUnits()
+			this.contractService.topUpEntryPointDeposit(chain, targetGasUnits, 1_000_000n).catch((err) => {
+				this.logger.error({ commitment, chain, err }, "Post-fill EntryPoint deposit top-up failed")
+			})
+		}
+
 		if (!this.bidStorage || !this.hyperbridge) {
 			return
 		}

sdk/packages/simplex/src/services/ContractInteractionService.ts

@@ -282,75 +282,97 @@ export class ContractInteractionService {
 	}
 
 	/**
-	 * Ensures the solver's EntryPoint deposit has enough native token to cover
-	 * the estimated gas cost for a given order.
+	 * Tops up the solver's EntryPoint deposit so it covers at least
+	 * `targetGasUnits` at the current gas price. Skips if the wallet
+	 * balance cannot afford at least 1M gas units (not enough to send txs).
 	 *
-	 * Uses cached gas estimates (from estimateGasFillPost) and, if the current
-	 * deposit is insufficient, tops up by depositing 10% of the solver's EOA
-	 * native balance on the destination chain.
+	 * @param chain - The chain identifier
+	 * @param targetGasUnits - Gas units the deposit should cover (default 3M)
+	 * @param thresholdGasUnits - Only top up if deposit is below this many gas units (defaults to targetGasUnits)
 	 */
-	async ensureEntryPointDeposit(order: Order): Promise<void> {
-		if (!order.id) {
-			this.logger.warn({ destination: order.destination }, "Order has no ID, skipping EntryPoint deposit check")
+	async topUpEntryPointDeposit(chain: string, targetGasUnits: bigint = 3_000_000n, thresholdGasUnits?: bigint): Promise<void> {
+		const effectiveThreshold = thresholdGasUnits ?? targetGasUnits
+		const entryPointAddress = this.configService.getEntryPointAddress(chain)
+		if (!entryPointAddress) {
 			return
 		}
 
-		const gasEstimate = this.cacheService.getGasEstimate(order.id)
-		if (!gasEstimate) {
-			this.logger.warn(
-				{ orderId: order.id, destination: order.destination },
-				"No cached gas estimate found, skipping EntryPoint deposit check",
-			)
+		const publicClient = this.clientManager.getPublicClient(chain)
+		const [currentDeposit, solverBalance, gasPrice] = await Promise.all([
+			this.getSolverEntryPointBalance(chain),
+			publicClient.getBalance({ address: this.solverAccountAddress }),
+			publicClient.getGasPrice(),
+		])
+
+		if (gasPrice === 0n) {
+			this.logger.warn({ chain }, "Gas price is zero, skipping EntryPoint top-up")
 			return
 		}
 
-		const requiredNative = 3n * gasEstimate.totalGasCostWei
+		// Skip if wallet can't afford at least 1M gas units
+		const walletGasUnits = solverBalance / gasPrice
+		const minWalletGasUnits = 1_000_000n
 
-		const currentDeposit = await this.getSolverEntryPointBalance(order.destination)
+		if (walletGasUnits < minWalletGasUnits) {
+			this.logger.warn(
+				{
+					chain,
+					walletBalance: formatEther(solverBalance),
+					walletGasUnits: walletGasUnits.toString(),
+					gasPrice: gasPrice.toString(),
+				},
+				"Wallet balance too low to afford minimum gas, skipping EntryPoint top-up",
+			)
+			return
+		}
 
-		this.logger.debug(
-			{
-				orderId: order.id,
-				destination: order.destination,
-				currentDeposit: formatEther(currentDeposit),
-				requiredNative: formatEther(requiredNative),
-			},
-			"EntryPoint deposit gas coverage check",
-		)
+		const targetDeposit = targetGasUnits * gasPrice
+		const thresholdDeposit = effectiveThreshold * gasPrice
+		const depositGasUnits = currentDeposit / gasPrice
 
-		if (currentDeposit >= requiredNative) {
+		if (currentDeposit >= thresholdDeposit) {
+			this.logger.info(
+				{
+					chain,
+					currentDeposit: formatEther(currentDeposit),
+					depositGasUnits: depositGasUnits.toString(),
+					targetGasUnits: targetGasUnits.toString(),
+					walletBalance: formatEther(solverBalance),
+				},
+				"EntryPoint deposit covers target gas units, no top-up needed",
+			)
 			return
 		}
 
-		const publicClient = this.clientManager.getPublicClient(order.destination)
-		const solverBalance = await publicClient.getBalance({ address: this.solverAccountAddress })
-		const depositAmount = solverBalance / 10n
+		const deficit = targetDeposit - currentDeposit
 
-		if (depositAmount === 0n) {
+		if (solverBalance < deficit) {
 			this.logger.warn(
 				{
-					orderId: order.id,
-					destination: order.destination,
+					chain,
+					deficit: formatEther(deficit),
 					solverBalance: formatEther(solverBalance),
+					depositGasUnits: depositGasUnits.toString(),
+					targetGasUnits: targetGasUnits.toString(),
 				},
-				"Solver EOA balance too low to top up EntryPoint deposit",
+				"Solver EOA balance insufficient to reach target deposit, depositing available balance",
 			)
+			await this.depositToEntryPoint(chain, solverBalance)
 			return
 		}
 
 		this.logger.info(
 			{
-				orderId: order.id,
-				destination: order.destination,
-				requiredNative: formatEther(requiredNative),
+				chain,
 				currentDeposit: formatEther(currentDeposit),
-				solverBalance: formatEther(solverBalance),
-				depositAmount: formatEther(depositAmount),
+				depositGasUnits: depositGasUnits.toString(),
+				targetGasUnits: targetGasUnits.toString(),
+				topUpAmount: formatEther(deficit),
 			},
-			"Top up EntryPoint deposit by 10% of solver EOA balance",
+			"Topping up EntryPoint deposit to cover target gas units",
 		)
 
-		await this.depositToEntryPoint(order.destination, depositAmount)
+		await this.depositToEntryPoint(chain, deficit)
 	}
 
 	/**

sdk/packages/simplex/src/services/FillerConfigService.ts

@@ -38,6 +38,11 @@ export interface FillerConfig {
 	 */
 	gasFeeBump?: GasFeeBumpConfig
 	rebalancing?: RebalancingConfig
+	/**
+	 * Target gas units the EntryPoint deposit should cover per chain.
+	 * Defaults to 3,000,000 if not set.
+	 */
+	targetGasUnits?: number
 }
 
 /**
@@ -303,4 +308,12 @@ export class FillerConfigService {
 	getTriggerPercentage(): number | undefined {
 		return this.fillerConfig?.rebalancing?.triggerPercentage
 	}
+
+	/**
+	 * Get target gas units for EntryPoint deposits.
+	 * Defaults to 3,000,000 if not configured.
+	 */
+	getTargetGasUnits(): bigint {
+		return BigInt(this.fillerConfig?.targetGasUnits ?? 3_000_000)
+	}
 }