AztecProtocol · spalladino · Feb 11, 2026 · Feb 11, 2026
diff --git a/spartan/aztec-bot/templates/env.configmap.yaml b/spartan/aztec-bot/templates/env.configmap.yaml
@@ -9,6 +9,7 @@ data:
   BOT_PRIVATE_TRANSFERS_PER_TX: {{ .Values.bot.privateTransfersPerTx | quote }}
   BOT_PUBLIC_TRANSFERS_PER_TX: {{ .Values.bot.publicTransfersPerTx | quote }}
   BOT_FOLLOW_CHAIN: {{ .Values.bot.followChain | quote }}
+  PXE_SYNC_CHAIN_TIP: {{ .Values.bot.pxeSyncChainTip | quote }}
   BOT_NO_START: {{ .Values.bot.botNoStart | quote }}
   BOT_FEE_PAYMENT_METHOD: {{ .Values.bot.feePaymentMethod | quote }}
   BOT_AMM_TXS: {{ .Values.bot.ammTxs | quote }}

diff --git a/spartan/aztec-bot/values.yaml b/spartan/aztec-bot/values.yaml
@@ -12,6 +12,7 @@ bot:
   publicTransfersPerTx: 1
   # Do not wait for transactions
   followChain: "NONE"
+  pxeSyncChainTip: "checkpointed"
   botNoStart: false
   feePaymentMethod: "fee_juice"
   ammTxs: false

diff --git a/spartan/scripts/deploy_network.sh b/spartan/scripts/deploy_network.sh
@@ -115,6 +115,8 @@ BOT_TRANSFERS_TX_INTERVAL_SECONDS=${BOT_TRANSFERS_TX_INTERVAL_SECONDS:-60}
 BOT_SWAPS_TX_INTERVAL_SECONDS=${BOT_SWAPS_TX_INTERVAL_SECONDS:-60}
 BOT_TRANSFERS_FOLLOW_CHAIN=${BOT_TRANSFERS_FOLLOW_CHAIN:-NONE}
 BOT_SWAPS_FOLLOW_CHAIN=${BOT_SWAPS_FOLLOW_CHAIN:-NONE}
+BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP=${BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP:-checkpointed}
+BOT_SWAPS_PXE_SYNC_CHAIN_TIP=${BOT_SWAPS_PXE_SYNC_CHAIN_TIP:-checkpointed}
 
 RPC_INGRESS_ENABLED=${RPC_INGRESS_ENABLED:-false}
 RPC_INGRESS_HOSTS=${RPC_INGRESS_HOSTS:-[]}
@@ -506,6 +508,8 @@ BOT_SWAPS_MNEMONIC_START_INDEX = ${BOT_SWAPS_MNEMONIC_START_INDEX}
 BOT_SWAPS_REPLICAS = ${BOT_SWAPS_REPLICAS}
 BOT_SWAPS_TX_INTERVAL_SECONDS = ${BOT_SWAPS_TX_INTERVAL_SECONDS}
 BOT_SWAPS_FOLLOW_CHAIN = "${BOT_SWAPS_FOLLOW_CHAIN}"
+BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP = "${BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP}"
+BOT_SWAPS_PXE_SYNC_CHAIN_TIP = "${BOT_SWAPS_PXE_SYNC_CHAIN_TIP}"
 BOT_TRANSFERS_L2_PRIVATE_KEY = "${BOT_TRANSFERS_L2_PRIVATE_KEY:-0xcafe01}"
 BOT_SWAPS_L2_PRIVATE_KEY = "${BOT_SWAPS_L2_PRIVATE_KEY:-0xcafe02}"
 

diff --git a/spartan/terraform/deploy-aztec-infra/main.tf b/spartan/terraform/deploy-aztec-infra/main.tf
@@ -576,6 +576,7 @@ locals {
         "bot.replicaCount"       = var.BOT_TRANSFERS_REPLICAS
         "bot.txIntervalSeconds"  = var.BOT_TRANSFERS_TX_INTERVAL_SECONDS
         "bot.followChain"        = var.BOT_TRANSFERS_FOLLOW_CHAIN
+        "bot.pxeSyncChainTip"    = var.BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP
         "bot.botPrivateKey"      = var.BOT_TRANSFERS_L2_PRIVATE_KEY
         "bot.nodeUrl"            = local.internal_rpc_url
         "bot.mnemonic"           = var.BOT_MNEMONIC
@@ -599,6 +600,7 @@ locals {
         "bot.replicaCount"       = var.BOT_SWAPS_REPLICAS
         "bot.txIntervalSeconds"  = var.BOT_SWAPS_TX_INTERVAL_SECONDS
         "bot.followChain"        = var.BOT_SWAPS_FOLLOW_CHAIN
+        "bot.pxeSyncChainTip"    = var.BOT_SWAPS_PXE_SYNC_CHAIN_TIP
         "bot.botPrivateKey"      = var.BOT_SWAPS_L2_PRIVATE_KEY
         "bot.nodeUrl"            = local.internal_rpc_url
         "bot.mnemonic"           = var.BOT_MNEMONIC

diff --git a/spartan/terraform/deploy-aztec-infra/variables.tf b/spartan/terraform/deploy-aztec-infra/variables.tf
@@ -519,6 +519,12 @@ variable "BOT_TRANSFERS_FOLLOW_CHAIN" {
   default     = "PENDING"
 }
 
+variable "BOT_TRANSFERS_PXE_SYNC_CHAIN_TIP" {
+  description = "Transfers bot PXE sync chain tip mode (e.g., checkpointed)"
+  type        = string
+  default     = "checkpointed"
+}
+
 variable "BOT_TRANSFERS_L2_PRIVATE_KEY" {
   description = "Private key for the transfers bot (hex string starting with 0x)"
   nullable    = true
@@ -549,6 +555,12 @@ variable "BOT_SWAPS_FOLLOW_CHAIN" {
   default     = "PENDING"
 }
 
+variable "BOT_SWAPS_PXE_SYNC_CHAIN_TIP" {
+  description = "AMM swaps bot PXE sync chain tip mode (e.g., checkpointed)"
+  type        = string
+  default     = "checkpointed"
+}
+
 variable "BOT_SWAPS_L2_PRIVATE_KEY" {
   description = "Private key for the AMM swaps bot (hex string starting with 0x)"
   type        = string

diff --git a/yarn-project/aztec/src/cli/cmds/start_bot.ts b/yarn-project/aztec/src/cli/cmds/start_bot.ts
@@ -12,7 +12,7 @@ import {
 } from '@aztec/telemetry-client';
 import { TestWallet } from '@aztec/test-wallet/server';
 
-import { extractRelevantOptions } from '../util.js';
+import { extractRelevantOptions, stringifyConfig } from '../util.js';
 import { getVersions } from '../versioning.js';
 
 export async function startBot(
@@ -38,10 +38,11 @@ export async function startBot(
   const aztecNode = createAztecNodeClient(config.nodeUrl, getVersions(), fetch);
 
   const pxeConfig = extractRelevantOptions<PXEConfig & CliPXEOptions>(options, allPxeConfigMappings, 'pxe');
+  userLog(`Creating bot test wallet with config ${stringifyConfig(pxeConfig)}`);
   const wallet = await TestWallet.create(aztecNode, pxeConfig);
 
   const telemetry = await initTelemetryClient(getTelemetryClientConfig());
-  await addBot(options, signalHandlers, services, wallet, aztecNode, telemetry, undefined);
+  await addBot(options, signalHandlers, services, wallet, aztecNode, telemetry, undefined, userLog);
 }
 
 export async function addBot(
@@ -52,8 +53,10 @@ export async function addBot(
   aztecNode: AztecNode,
   telemetry: TelemetryClient,
   aztecNodeAdmin?: AztecNodeAdmin,
+  userLog?: LogFn,
 ) {
   const config = extractRelevantOptions<BotConfig>(options, botConfigMappings, 'bot');
+  userLog?.(`Starting bot with config ${stringifyConfig(config)}`);
 
   const db = await (config.dataDirectory
     ? createStore('bot', BotStore.SCHEMA_VERSION, config)

diff --git a/yarn-project/aztec/src/cli/util.ts b/yarn-project/aztec/src/cli/util.ts
@@ -4,6 +4,7 @@ import type { ViemClient } from '@aztec/ethereum/types';
 import type { ConfigMappingsType } from '@aztec/foundation/config';
 import { Fr } from '@aztec/foundation/curves/bn254';
 import { EthAddress } from '@aztec/foundation/eth-address';
+import { jsonStringify } from '@aztec/foundation/json-rpc';
 import { type LogFn, createLogger } from '@aztec/foundation/log';
 import type { SharedNodeConfig } from '@aztec/node-lib/config';
 import type { ProverConfig } from '@aztec/stdlib/interfaces/server';
@@ -388,3 +389,9 @@ export async function setupUpdateMonitor(
 
   checker.start();
 }
+
+export function stringifyConfig(config: object): string {
+  return Object.entries(config)
+    .map(([key, value]) => `${key}=${jsonStringify(value)}`)
+    .join(' ');
+}
diff --git a/yarn-project/bot/src/base_bot.ts b/yarn-project/bot/src/base_bot.ts
@@ -1,13 +1,8 @@
 import { AztecAddress } from '@aztec/aztec.js/addresses';
-import {
-  BatchCall,
-  ContractFunctionInteraction,
-  type SendInteractionOptions,
-  waitForProven,
-} from '@aztec/aztec.js/contracts';
+import { BatchCall, ContractFunctionInteraction, type SendInteractionOptions } from '@aztec/aztec.js/contracts';
 import { createLogger } from '@aztec/aztec.js/log';
 import { waitForTx } from '@aztec/aztec.js/node';
-import { TxHash, TxReceipt } from '@aztec/aztec.js/tx';
+import { TxHash, TxReceipt, TxStatus } from '@aztec/aztec.js/tx';
 import { Gas } from '@aztec/stdlib/gas';
 import type { AztecNode } from '@aztec/stdlib/interfaces/client';
 import type { TestWallet } from '@aztec/test-wallet/server';
@@ -29,8 +24,8 @@ export abstract class BaseBot {
 
   public async run(): Promise<TxReceipt | TxHash> {
     this.attempts++;
-    const logCtx = { runId: Date.now() * 1000 + Math.floor(Math.random() * 1000) };
     const { followChain, txMinedWaitSeconds } = this.config;
+    const logCtx = { runId: Date.now() * 1000 + Math.floor(Math.random() * 1000), followChain, txMinedWaitSeconds };
 
     this.log.verbose(`Creating tx`, logCtx);
     const txHash = await this.createAndSendTx(logCtx);
@@ -40,14 +35,9 @@ export abstract class BaseBot {
       return txHash;
     }
 
-    this.log.verbose(
-      `Awaiting tx ${txHash.toString()} to be on the ${followChain} chain (timeout ${txMinedWaitSeconds}s)`,
-      logCtx,
-    );
-    const receipt = await waitForTx(this.node, txHash, { timeout: txMinedWaitSeconds });
-    if (followChain === 'PROVEN') {
-      await waitForProven(this.node, receipt, { provenTimeout: txMinedWaitSeconds });
-    }
+    const waitForStatus = TxStatus[followChain];
+    this.log.verbose(`Awaiting tx ${txHash.toString()} to be on the ${followChain} chain`, logCtx);
+    const receipt = await waitForTx(this.node, txHash, { timeout: txMinedWaitSeconds, waitForStatus });
     this.successes++;
     this.log.info(
       `Tx #${this.attempts} ${receipt.txHash} successfully mined in block ${receipt.blockNumber} (stats: ${this.successes}/${this.attempts} success)`,

diff --git a/yarn-project/bot/src/config.ts b/yarn-project/bot/src/config.ts
@@ -19,7 +19,7 @@ import type { ComponentsVersions } from '@aztec/stdlib/versioning';
 
 import { z } from 'zod';
 
-const BotFollowChain = ['NONE', 'PENDING', 'PROVEN'] as const;
+const BotFollowChain = ['NONE', 'PROPOSED', 'CHECKPOINTED', 'PROVEN'] as const;
 type BotFollowChain = (typeof BotFollowChain)[number];
 
 export enum SupportedTokenContracts {
@@ -213,10 +213,14 @@ export const botConfigMappings: ConfigMappingsType<BotConfig> = {
     description: 'Which chain the bot follows',
     defaultValue: 'NONE',
     parseEnv(val) {
-      if (!(BotFollowChain as readonly string[]).includes(val.toUpperCase())) {
+      const upper = val.toUpperCase();
+      if (upper === 'PENDING') {
+        return 'CHECKPOINTED';
+      }
+      if (!(BotFollowChain as readonly string[]).includes(upper)) {
         throw new Error(`Invalid value for BOT_FOLLOW_CHAIN: ${val}`);
       }
-      return val as BotFollowChain;
+      return upper as BotFollowChain;
     },
   },
   maxPendingTxs: {

diff --git a/yarn-project/end-to-end/src/e2e_bot.test.ts b/yarn-project/end-to-end/src/e2e_bot.test.ts
@@ -44,7 +44,7 @@ describe('e2e_bot', () => {
     beforeAll(async () => {
       config = {
         ...getBotDefaultConfig(),
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: false,
       };
       bot = await Bot.create(config, wallet, aztecNode, undefined, new BotStore(await openTmpStore('bot')));
@@ -109,7 +109,7 @@ describe('e2e_bot', () => {
       const config: BotConfig = {
         ...getBotDefaultConfig(),
 
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: false,
 
         // this bot has a well defined private key and salt
@@ -147,7 +147,7 @@ describe('e2e_bot', () => {
       const config: BotConfig = {
         ...getBotDefaultConfig(),
 
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: false,
 
         // this bot has a well defined private key and salt
@@ -185,7 +185,7 @@ describe('e2e_bot', () => {
     beforeAll(async () => {
       config = {
         ...getBotDefaultConfig(),
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: true,
       };
       bot = await AmmBot.create(config, wallet, aztecNode, undefined, new BotStore(await openTmpStore('bot')));
@@ -215,7 +215,7 @@ describe('e2e_bot', () => {
     beforeAll(() => {
       config = {
         ...getBotDefaultConfig(),
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: false,
         senderPrivateKey: new SecretValue(Fr.random()),
         l1PrivateKey: new SecretValue(bufferToHex(getPrivateKeyFromIndex(8)!)),

diff --git a/yarn-project/end-to-end/src/e2e_sequencer_config.test.ts b/yarn-project/end-to-end/src/e2e_sequencer_config.test.ts
@@ -39,7 +39,7 @@ describe('e2e_sequencer_config', () => {
       }));
       config = {
         ...getBotDefaultConfig(),
-        followChain: 'PENDING',
+        followChain: 'CHECKPOINTED',
         ammTxs: false,
         txMinedWaitSeconds: 12,
       };

diff --git a/yarn-project/end-to-end/src/spartan/gating-passive.test.ts b/yarn-project/end-to-end/src/spartan/gating-passive.test.ts
@@ -112,7 +112,7 @@ describe('a test that passively observes the network in the presence of network
       logger: debugLogger,
       replicas: 1,
       txIntervalSeconds: 10,
-      followChain: 'PENDING',
+      followChain: 'CHECKPOINTED',
     });
   });
 

diff --git a/yarn-project/end-to-end/src/spartan/utils/bot.ts b/yarn-project/end-to-end/src/spartan/utils/bot.ts
@@ -34,7 +34,7 @@ export async function installTransferBot({
   logger: log,
   replicas = 1,
   txIntervalSeconds = 10,
-  followChain = 'PENDING',
+  followChain = 'CHECKPOINTED',
   mnemonic = process.env.LABS_INFRA_MNEMONIC ?? 'test test test test test test test test test test test junk',
   mnemonicStartIndex,
   botPrivateKey = process.env.BOT_TRANSFERS_L2_PRIVATE_KEY ?? '0xcafe01',