diff --git a/.changeset/lovely-plants-clean.md b/.changeset/lovely-plants-clean.md
new file mode 100644
index 000000000..6ea61e2d7
--- /dev/null
+++ b/.changeset/lovely-plants-clean.md
@@ -0,0 +1,7 @@
+---
+'@eth-optimism/core-utils': patch
+'@eth-optimism/data-transport-layer': patch
+'@eth-optimism/message-relayer': patch
+---
+
+Migrate bcfg interface to core-utils
diff --git a/.changeset/soft-squids-switch.md b/.changeset/soft-squids-switch.md
new file mode 100644
index 000000000..0ff4c2215
--- /dev/null
+++ b/.changeset/soft-squids-switch.md
@@ -0,0 +1,5 @@
+---
+'@eth-optimism/batch-submitter': patch
+---
+
+Updates the configuration to use bcfg in a backwards compatible way
diff --git a/packages/batch-submitter/.env.example b/packages/batch-submitter/.env.example
index 54576ac4f..fe7a77704 100644
--- a/packages/batch-submitter/.env.example
+++ b/packages/batch-submitter/.env.example
@@ -7,6 +7,7 @@ DEBUG=info*,error*,warn*,debug*
 # Leave the SENTRY_DSN variable unset during local development
 SENTRY_DSN=
 SENTRY_TRACE_RATE=
+USE_SENTRY=
 
 L1_NODE_WEB3_URL=http://localhost:9545
 L2_NODE_WEB3_URL=http://localhost:8545
diff --git a/packages/batch-submitter/package.json b/packages/batch-submitter/package.json
index 5ed68527c..9a887ab5c 100644
--- a/packages/batch-submitter/package.json
+++ b/packages/batch-submitter/package.json
@@ -37,6 +37,7 @@
     "@eth-optimism/ynatm": "^0.2.2",
     "@ethersproject/abstract-provider": "^5.0.5",
     "@ethersproject/providers": "^5.0.14",
+    "bcfg": "^0.1.6",
     "bluebird": "^3.7.2",
     "dotenv": "^8.2.0",
     "ethers": "5.0.0",
diff --git a/packages/batch-submitter/src/exec/run-batch-submitter.ts b/packages/batch-submitter/src/exec/run-batch-submitter.ts
index 00319f593..6ef7e8445 100644
--- a/packages/batch-submitter/src/exec/run-batch-submitter.ts
+++ b/packages/batch-submitter/src/exec/run-batch-submitter.ts
@@ -1,11 +1,11 @@
 /* External Imports */
-import { injectL2Context } from '@eth-optimism/core-utils'
+import { injectL2Context, Bcfg } from '@eth-optimism/core-utils'
 import { Logger, Metrics } from '@eth-optimism/common-ts'
 import { exit } from 'process'
 import { Signer, Wallet } from 'ethers'
 import { JsonRpcProvider, TransactionReceipt } from '@ethersproject/providers'
-import { config } from 'dotenv'
-config()
+import * as dotenv from 'dotenv'
+import Config from 'bcfg'
 
 /* Internal Imports */
 import {
@@ -16,89 +16,41 @@ import {
   TX_BATCH_SUBMITTER_LOG_TAG,
 } from '..'
 
-const environment = process.env.NODE_ENV
-const network = process.env.ETH_NETWORK_NAME
-const release = `batch-submitter@${process.env.npm_package_version}`
-
-/* Logger */
-const name = 'oe:batch_submitter:init'
-let logger
-
-if (network) {
-  // Initialize Sentry for Batch Submitter deployed to a network
-  logger = new Logger({
-    name,
-    sentryOptions: {
-      release,
-      dsn: process.env.SENTRY_DSN,
-      tracesSampleRate: parseInt(process.env.SENTRY_TRACE_RATE, 10) || 0.05,
-      environment: network, // separate our Sentry errors by network instead of node environment
-    },
-  })
-} else {
-  // Skip initializing Sentry
-  logger = new Logger({ name })
-}
-
-/* Metrics */
-const metrics = new Metrics({
-  prefix: name,
-  labels: { environment, release, network },
-})
-
 interface RequiredEnvVars {
   // The HTTP provider URL for L1.
-  L1_NODE_WEB3_URL: 'L1_NODE_WEB3_URL'
+  L1_NODE_WEB3_URL: string
   // The HTTP provider URL for L2.
-  L2_NODE_WEB3_URL: 'L2_NODE_WEB3_URL'
+  L2_NODE_WEB3_URL: string
   // The layer one address manager address
-  ADDRESS_MANAGER_ADDRESS: 'ADDRESS_MANAGER_ADDRESS'
+  ADDRESS_MANAGER_ADDRESS: string
   // The minimum size in bytes of any L1 transactions generated by the batch submitter.
-  MIN_L1_TX_SIZE: 'MIN_L1_TX_SIZE'
+  MIN_L1_TX_SIZE: number
   // The maximum size in bytes of any L1 transactions generated by the batch submitter.
-  MAX_L1_TX_SIZE: 'MAX_L1_TX_SIZE'
+  MAX_L1_TX_SIZE: number
   // The maximum number of L2 transactions that can ever be in a batch.
-  MAX_TX_BATCH_COUNT: 'MAX_TX_BATCH_COUNT'
+  MAX_TX_BATCH_COUNT: number
   // The maximum number of L2 state roots that can ever be in a batch.
-  MAX_STATE_BATCH_COUNT: 'MAX_STATE_BATCH_COUNT'
+  MAX_STATE_BATCH_COUNT: number
   // The maximum amount of time (seconds) that we will wait before submitting an under-sized batch.
-  MAX_BATCH_SUBMISSION_TIME: 'MAX_BATCH_SUBMISSION_TIME'
+  MAX_BATCH_SUBMISSION_TIME: number
   // The delay in milliseconds between querying L2 for more transactions / to create a new batch.
-  POLL_INTERVAL: 'POLL_INTERVAL'
+  POLL_INTERVAL: number
   // The number of confirmations which we will wait after appending new batches.
-  NUM_CONFIRMATIONS: 'NUM_CONFIRMATIONS'
+  NUM_CONFIRMATIONS: number
   // The number of seconds to wait before resubmitting a transaction.
-  RESUBMISSION_TIMEOUT: 'RESUBMISSION_TIMEOUT'
+  RESUBMISSION_TIMEOUT: number
   // The number of confirmations that we should wait before submitting state roots for CTC elements.
-  FINALITY_CONFIRMATIONS: 'FINALITY_CONFIRMATIONS'
+  FINALITY_CONFIRMATIONS: number
   // Whether or not to run the tx batch submitter.
-  RUN_TX_BATCH_SUBMITTER: 'true' | 'false' | 'RUN_TX_BATCH_SUBMITTER'
+  RUN_TX_BATCH_SUBMITTER: boolean
   // Whether or not to run the state batch submitter.
-  RUN_STATE_BATCH_SUBMITTER: 'true' | 'false' | 'RUN_STATE_BATCH_SUBMITTER'
+  RUN_STATE_BATCH_SUBMITTER: boolean
   // The safe minimum amount of ether the batch submitter key should
   // hold before it starts to log errors.
-  SAFE_MINIMUM_ETHER_BALANCE: 'SAFE_MINIMUM_ETHER_BALANCE'
+  SAFE_MINIMUM_ETHER_BALANCE: number
   // A boolean to clear the pending transactions in the mempool
   // on start up.
-  CLEAR_PENDING_TXS: 'true' | 'false' | 'CLEAR_PENDING_TXS'
-}
-const requiredEnvVars: RequiredEnvVars = {
-  L1_NODE_WEB3_URL: 'L1_NODE_WEB3_URL',
-  L2_NODE_WEB3_URL: 'L2_NODE_WEB3_URL',
-  ADDRESS_MANAGER_ADDRESS: 'ADDRESS_MANAGER_ADDRESS',
-  MIN_L1_TX_SIZE: 'MIN_L1_TX_SIZE',
-  MAX_L1_TX_SIZE: 'MAX_L1_TX_SIZE',
-  MAX_TX_BATCH_COUNT: 'MAX_TX_BATCH_COUNT',
-  MAX_STATE_BATCH_COUNT: 'MAX_STATE_BATCH_COUNT',
-  MAX_BATCH_SUBMISSION_TIME: 'MAX_BATCH_SUBMISSION_TIME',
-  POLL_INTERVAL: 'POLL_INTERVAL',
-  NUM_CONFIRMATIONS: 'NUM_CONFIRMATIONS',
-  RESUBMISSION_TIMEOUT: 'RESUBMISSION_TIMEOUT',
-  FINALITY_CONFIRMATIONS: 'FINALITY_CONFIRMATIONS',
-  RUN_TX_BATCH_SUBMITTER: 'RUN_TX_BATCH_SUBMITTER',
-  RUN_STATE_BATCH_SUBMITTER: 'RUN_STATE_BATCH_SUBMITTER',
-  SAFE_MINIMUM_ETHER_BALANCE: 'SAFE_MINIMUM_ETHER_BALANCE',
-  CLEAR_PENDING_TXS: 'CLEAR_PENDING_TXS',
+  CLEAR_PENDING_TXS: boolean
 }
 
 /* Optional Env Vars
@@ -112,50 +64,196 @@ const requiredEnvVars: RequiredEnvVars = {
  * SEQUENCER_HD_PATH
  * PROPOSER_HD_PATH
  */
-const env = process.env
-const FRAUD_SUBMISSION_ADDRESS = env.FRAUD_SUBMISSION_ADDRESS || 'no fraud'
-const DISABLE_QUEUE_BATCH_APPEND = !!env.DISABLE_QUEUE_BATCH_APPEND
-const MIN_GAS_PRICE_IN_GWEI = parseInt(env.MIN_GAS_PRICE_IN_GWEI, 10) || 0
-const MAX_GAS_PRICE_IN_GWEI = parseInt(env.MAX_GAS_PRICE_IN_GWEI, 10) || 70
-const GAS_RETRY_INCREMENT = parseInt(env.GAS_RETRY_INCREMENT, 10) || 5
-const GAS_THRESHOLD_IN_GWEI = parseInt(env.GAS_THRESHOLD_IN_GWEI, 10) || 100
-
-// Private keys & mnemonics
-const SEQUENCER_PRIVATE_KEY = env.SEQUENCER_PRIVATE_KEY
-const PROPOSER_PRIVATE_KEY =
-  env.PROPOSER_PRIVATE_KEY || env.SEQUENCER_PRIVATE_KEY // Kept for backwards compatibility
-const SEQUENCER_MNEMONIC = env.SEQUENCER_MNEMONIC || env.MNEMONIC
-const PROPOSER_MNEMONIC = env.PROPOSER_MNEMONIC || env.MNEMONIC
-const SEQUENCER_HD_PATH = env.SEQUENCER_HD_PATH || env.HD_PATH
-const PROPOSER_HD_PATH = env.PROPOSER_HD_PATH || env.HD_PATH
-// Auto fix batch options -- TODO: Remove this very hacky config
-const AUTO_FIX_BATCH_OPTIONS_CONF = env.AUTO_FIX_BATCH_OPTIONS_CONF
-const autoFixBatchOptions: AutoFixBatchOptions = {
-  fixDoublePlayedDeposits: AUTO_FIX_BATCH_OPTIONS_CONF
-    ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixDoublePlayedDeposits')
-    : false,
-  fixMonotonicity: AUTO_FIX_BATCH_OPTIONS_CONF
-    ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixMonotonicity')
-    : false,
-  fixSkippedDeposits: AUTO_FIX_BATCH_OPTIONS_CONF
-    ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixSkippedDeposits')
-    : false,
-}
 
 export const run = async () => {
+  dotenv.config()
+
+  const config: Bcfg = new Config('batch-submitter')
+  config.load({
+    env: true,
+    argv: true,
+  })
+
+  // Parse config
+  const env = process.env
+  const environment = config.str('node-env', env.NODE_ENV)
+  const network = config.str('eth-network-name', env.ETH_NETWORK_NAME)
+  const release = `batch-submitter@${env.npm_package_version}`
+  const sentryDsn = config.str('sentry-dsn', env.SENTRY_DSN)
+  const sentryTraceRate = config.ufloat(
+    'sentry-trace-rate',
+    parseFloat(env.SENTRY_TRACE_RATE) || 0.05
+  )
+
+  /* Logger */
+  const name = 'oe:batch_submitter:init'
+  let logger
+
+  if (config.bool('use-sentry', env.USE_SENTRY === 'true')) {
+    // Initialize Sentry for Batch Submitter deployed to a network
+    logger = new Logger({
+      name,
+      sentryOptions: {
+        release,
+        dsn: sentryDsn,
+        tracesSampleRate: sentryTraceRate,
+        environment: network,
+      },
+    })
+  } else {
+    // Skip initializing Sentry
+    logger = new Logger({ name })
+  }
+
+  /* Metrics */
+  const metrics = new Metrics({
+    prefix: name,
+    labels: { environment, release, network },
+  })
+
+  const FRAUD_SUBMISSION_ADDRESS = config.str(
+    'fraud-submisison-address',
+    env.FRAUD_SUBMISSION_ADDRESS || 'no fraud'
+  )
+  const DISABLE_QUEUE_BATCH_APPEND = config.bool(
+    'disable-queue-batch-append',
+    !!env.DISABLE_QUEUE_BATCH_APPEND
+  )
+  const MIN_GAS_PRICE_IN_GWEI = config.uint(
+    'min-gas-price-in-gwei',
+    parseInt(env.MIN_GAS_PRICE_IN_GWEI, 10) || 0
+  )
+  const MAX_GAS_PRICE_IN_GWEI = config.uint(
+    'max-gas-price-in-gwei',
+    parseInt(env.MAX_GAS_PRICE_IN_GWEI, 10) || 70
+  )
+  const GAS_RETRY_INCREMENT = config.uint(
+    'gas-retry-increment',
+    parseInt(env.GAS_RETRY_INCREMENT, 10) || 5
+  )
+  const GAS_THRESHOLD_IN_GWEI = config.uint(
+    'gas-threshold-in-gwei',
+    parseInt(env.GAS_THRESHOLD_IN_GWEI, 10) || 100
+  )
+
+  // Private keys & mnemonics
+  const SEQUENCER_PRIVATE_KEY = config.str(
+    'sequencer-private-key',
+    env.SEQUENCER_PRIVATE_KEY
+  )
+  // Kept for backwards compatibility
+  const PROPOSER_PRIVATE_KEY = config.str(
+    'proposer-private-key',
+    env.PROPOSER_PRIVATE_KEY || env.SEQUENCER_PRIVATE_KEY
+  )
+  const SEQUENCER_MNEMONIC = config.str(
+    'sequencer-mnemonic',
+    env.SEQUENCER_MNEMONIC || env.MNEMONIC
+  )
+  const PROPOSER_MNEMONIC = config.str(
+    'proposer-mnemonic',
+    env.PROPOSER_MNEMONIC || env.MNEMONIC
+  )
+  const SEQUENCER_HD_PATH = config.str(
+    'sequencer-hd-path',
+    env.SEQUENCER_HD_PATH || env.HD_PATH
+  )
+  const PROPOSER_HD_PATH = config.str(
+    'proposer-hd-path',
+    env.PROPOSER_HD_PATH || env.HD_PATH
+  )
+
+  // Auto fix batch options -- TODO: Remove this very hacky config
+  const AUTO_FIX_BATCH_OPTIONS_CONF = config.str(
+    'auto-fix-batch-conf',
+    env.AUTO_FIX_BATCH_OPTIONS_CONF || ''
+  )
+  const autoFixBatchOptions: AutoFixBatchOptions = {
+    fixDoublePlayedDeposits: AUTO_FIX_BATCH_OPTIONS_CONF
+      ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixDoublePlayedDeposits')
+      : false,
+    fixMonotonicity: AUTO_FIX_BATCH_OPTIONS_CONF
+      ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixMonotonicity')
+      : false,
+    fixSkippedDeposits: AUTO_FIX_BATCH_OPTIONS_CONF
+      ? AUTO_FIX_BATCH_OPTIONS_CONF.includes('fixSkippedDeposits')
+      : false,
+  }
+
   logger.info('Starting batch submitter...')
 
-  for (const [i, val] of Object.entries(requiredEnvVars)) {
-    if (!process.env[val]) {
+  const requiredEnvVars: RequiredEnvVars = {
+    L1_NODE_WEB3_URL: config.str('l1-node-web3-url', env.L1_NODE_WEB3_URL),
+    L2_NODE_WEB3_URL: config.str('l2-node-web3-url', env.L2_NODE_WEB3_URL),
+    ADDRESS_MANAGER_ADDRESS: config.str(
+      'address-manager-address',
+      env.ADDRESS_MANAGER_ADDRESS
+    ),
+    MIN_L1_TX_SIZE: config.uint(
+      'min-l1-tx-size',
+      parseInt(env.MIN_L1_TX_SIZE, 10)
+    ),
+    MAX_L1_TX_SIZE: config.uint(
+      'max-l1-tx-size',
+      parseInt(env.MAX_L1_TX_SIZE, 10)
+    ),
+    MAX_TX_BATCH_COUNT: config.uint(
+      'max-tx-batch-count',
+      parseInt(env.MAX_TX_BATCH_COUNT, 10)
+    ),
+    MAX_STATE_BATCH_COUNT: config.uint(
+      'max-state-batch-count',
+      parseInt(env.MAX_STATE_BATCH_COUNT, 10)
+    ),
+    MAX_BATCH_SUBMISSION_TIME: config.uint(
+      'max-batch-submisison-time',
+      parseInt(env.MAX_BATCH_SUBMISSION_TIME, 10)
+    ),
+    POLL_INTERVAL: config.uint(
+      'poll-interval',
+      parseInt(env.POLL_INTERVAL, 10)
+    ),
+    NUM_CONFIRMATIONS: config.uint(
+      'num-confirmations',
+      parseInt(env.NUM_CONFIRMATIONS, 10)
+    ),
+    RESUBMISSION_TIMEOUT: config.uint(
+      'resubmission-timeout',
+      parseInt(env.RESUBMISSION_TIMEOUT, 10)
+    ),
+    FINALITY_CONFIRMATIONS: config.uint(
+      'finality-confirmations',
+      parseInt(env.FINALITY_CONFIRMATIONS, 10)
+    ),
+    RUN_TX_BATCH_SUBMITTER: config.bool(
+      'run-tx-batch-submitter',
+      env.RUN_TX_BATCH_SUBMITTER === 'true'
+    ),
+    RUN_STATE_BATCH_SUBMITTER: config.bool(
+      'run-state-batch-submitter',
+      env.RUN_STATE_BATCH_SUBMITTER === 'true'
+    ),
+    SAFE_MINIMUM_ETHER_BALANCE: config.ufloat(
+      'safe-minimum-ether-balance',
+      parseFloat(env.SAFE_MINIMUM_ETHER_BALANCE)
+    ),
+    CLEAR_PENDING_TXS: config.bool(
+      'clear-pending-txs',
+      env.CLEAR_PENDING_TXS === 'true'
+    ),
+  }
+
+  for (const [key, val] of Object.entries(requiredEnvVars)) {
+    if (val === null || val === undefined) {
       logger.warn('Missing environment variable', {
-        varName: val,
+        key,
+        value: val,
       })
       exit(1)
     }
-    requiredEnvVars[val] = process.env[val]
   }
 
-  const clearPendingTxs = requiredEnvVars.CLEAR_PENDING_TXS === 'true'
+  const clearPendingTxs = requiredEnvVars.CLEAR_PENDING_TXS
 
   const l1Provider = new JsonRpcProvider(requiredEnvVars.L1_NODE_WEB3_URL)
   const l2Provider = injectL2Context(
@@ -206,14 +304,14 @@ export const run = async () => {
   const txBatchSubmitter = new TransactionBatchSubmitter(
     sequencerSigner,
     l2Provider,
-    parseInt(requiredEnvVars.MIN_L1_TX_SIZE, 10),
-    parseInt(requiredEnvVars.MAX_L1_TX_SIZE, 10),
-    parseInt(requiredEnvVars.MAX_TX_BATCH_COUNT, 10),
-    parseInt(requiredEnvVars.MAX_BATCH_SUBMISSION_TIME, 10) * 1_000,
-    parseInt(requiredEnvVars.NUM_CONFIRMATIONS, 10),
-    parseInt(requiredEnvVars.RESUBMISSION_TIMEOUT, 10) * 1_000,
+    requiredEnvVars.MIN_L1_TX_SIZE,
+    requiredEnvVars.MAX_L1_TX_SIZE,
+    requiredEnvVars.MAX_TX_BATCH_COUNT,
+    requiredEnvVars.MAX_BATCH_SUBMISSION_TIME * 1_000,
+    requiredEnvVars.NUM_CONFIRMATIONS,
+    requiredEnvVars.RESUBMISSION_TIMEOUT * 1_000,
     requiredEnvVars.ADDRESS_MANAGER_ADDRESS,
-    parseFloat(requiredEnvVars.SAFE_MINIMUM_ETHER_BALANCE),
+    requiredEnvVars.SAFE_MINIMUM_ETHER_BALANCE,
     MIN_GAS_PRICE_IN_GWEI,
     MAX_GAS_PRICE_IN_GWEI,
     GAS_RETRY_INCREMENT,
@@ -230,15 +328,15 @@ export const run = async () => {
   const stateBatchSubmitter = new StateBatchSubmitter(
     proposerSigner,
     l2Provider,
-    parseInt(requiredEnvVars.MIN_L1_TX_SIZE, 10),
-    parseInt(requiredEnvVars.MAX_L1_TX_SIZE, 10),
-    parseInt(requiredEnvVars.MAX_STATE_BATCH_COUNT, 10),
-    parseInt(requiredEnvVars.MAX_BATCH_SUBMISSION_TIME, 10) * 1_000,
-    parseInt(requiredEnvVars.NUM_CONFIRMATIONS, 10),
-    parseInt(requiredEnvVars.RESUBMISSION_TIMEOUT, 10) * 1_000,
-    parseInt(requiredEnvVars.FINALITY_CONFIRMATIONS, 10),
+    requiredEnvVars.MIN_L1_TX_SIZE,
+    requiredEnvVars.MAX_L1_TX_SIZE,
+    requiredEnvVars.MAX_STATE_BATCH_COUNT,
+    requiredEnvVars.MAX_BATCH_SUBMISSION_TIME * 1_000,
+    requiredEnvVars.NUM_CONFIRMATIONS,
+    requiredEnvVars.RESUBMISSION_TIMEOUT * 1_000,
+    requiredEnvVars.FINALITY_CONFIRMATIONS,
     requiredEnvVars.ADDRESS_MANAGER_ADDRESS,
-    parseFloat(requiredEnvVars.SAFE_MINIMUM_ETHER_BALANCE),
+    requiredEnvVars.SAFE_MINIMUM_ETHER_BALANCE,
     MIN_GAS_PRICE_IN_GWEI,
     MAX_GAS_PRICE_IN_GWEI,
     GAS_RETRY_INCREMENT,
@@ -281,7 +379,7 @@ export const run = async () => {
             })
             await sequencerSigner.provider.waitForTransaction(
               response.hash,
-              parseInt(requiredEnvVars.NUM_CONFIRMATIONS, 10)
+              requiredEnvVars.NUM_CONFIRMATIONS
             )
           }
         }
@@ -307,17 +405,15 @@ export const run = async () => {
         logger.info('Retrying...')
       }
       // Sleep
-      await new Promise((r) =>
-        setTimeout(r, parseInt(requiredEnvVars.POLL_INTERVAL, 10))
-      )
+      await new Promise((r) => setTimeout(r, requiredEnvVars.POLL_INTERVAL))
     }
   }
 
   // Run batch submitters in two seperate infinite loops!
-  if (requiredEnvVars.RUN_TX_BATCH_SUBMITTER === 'true') {
+  if (requiredEnvVars.RUN_TX_BATCH_SUBMITTER) {
     loop(() => txBatchSubmitter.submitNextBatch())
   }
-  if (requiredEnvVars.RUN_STATE_BATCH_SUBMITTER === 'true') {
+  if (requiredEnvVars.RUN_STATE_BATCH_SUBMITTER) {
     loop(() => stateBatchSubmitter.submitNextBatch())
   }
 }
diff --git a/packages/core-utils/src/bcfg.ts b/packages/core-utils/src/bcfg.ts
new file mode 100644
index 000000000..8b40de591
--- /dev/null
+++ b/packages/core-utils/src/bcfg.ts
@@ -0,0 +1,8 @@
+export interface Bcfg {
+  load: (options: { env?: boolean; argv?: boolean }) => void
+  str: (name: string, defaultValue?: string) => string
+  uint: (name: string, defaultValue?: number) => number
+  bool: (name: string, defaultValue?: boolean) => boolean
+  ufloat: (name: string, defaultValue?: number) => number
+  has: (name: string) => boolean
+}
diff --git a/packages/core-utils/src/index.ts b/packages/core-utils/src/index.ts
index 2cc9c43e9..aa5525f4d 100644
--- a/packages/core-utils/src/index.ts
+++ b/packages/core-utils/src/index.ts
@@ -4,3 +4,4 @@ export * from './watcher'
 export * from './l2context'
 export * from './events'
 export * from './batches'
+export * from './bcfg'
diff --git a/packages/data-transport-layer/src/services/run.ts b/packages/data-transport-layer/src/services/run.ts
index 9074916a4..877aaeded 100644
--- a/packages/data-transport-layer/src/services/run.ts
+++ b/packages/data-transport-layer/src/services/run.ts
@@ -1,18 +1,11 @@
 /* Imports: External */
 import * as dotenv from 'dotenv'
-import Config from 'bcfg' // TODO: Add some types for bcfg if we get the chance.
+import { Bcfg } from '@eth-optimism/core-utils'
+import Config from 'bcfg'
 
 /* Imports: Internal */
 import { L1DataTransportService } from './main/service'
 
-interface Bcfg {
-  load: (options: { env?: boolean; argv?: boolean }) => void
-  str: (name: string, defaultValue?: string) => string
-  uint: (name: string, defaultValue?: number) => number
-  bool: (name: string, defaultValue?: boolean) => boolean
-  ufloat: (name: string, defaultValue?: number) => number
-}
-
 type ethNetwork = 'mainnet' | 'kovan' | 'goerli'
 ;(async () => {
   try {
diff --git a/packages/message-relayer/src/exec/run.ts b/packages/message-relayer/src/exec/run.ts
index 50ff1a72c..c12c67d09 100644
--- a/packages/message-relayer/src/exec/run.ts
+++ b/packages/message-relayer/src/exec/run.ts
@@ -1,17 +1,10 @@
 import { Wallet, providers } from 'ethers'
 import { MessageRelayerService } from '../service'
+import { Bcfg } from '@eth-optimism/core-utils'
 import SpreadSheet from '../spreadsheet'
 import * as dotenv from 'dotenv'
 import Config from 'bcfg'
 
-interface Bcfg {
-  load: (options: { env?: boolean; argv?: boolean }) => void
-  str: (name: string, defaultValue?: string) => string
-  uint: (name: string, defaultValue?: number) => number
-  bool: (name: string, defaultValue?: boolean) => boolean
-  ufloat: (name: string, defaultValue?: number) => number
-}
-
 dotenv.config()
 
 const main = async () => {