diff --git a/package.json b/package.json
index f65d4de7a..84a7bea80 100644
--- a/package.json
+++ b/package.json
@@ -34,29 +34,23 @@
     "coverage": "run-s coverage-*",
     "report-coverage": "nyc report --extension .ts --check-coverage -r html",
     "test": "npm run build && npm run coverage",
-    "integration-browser-decrypt": "npm run build; integration-browser decrypt -v $npm_package_config_localTestVectors --karma -c cpu",
-    "integration-browser-encrypt": "npm run build; integration-browser encrypt -m $npm_package_config_encryptManifestList -k $npm_package_config_encryptKeyManifest -o $npm_package_config_decryptOracle --karma -c cpu",
+    "integration-browser-decrypt": "npm run build && . util/integration-test-vectors.sh && integration-browser decrypt -v \"$LOCAL_TEST_VECTORS\" --karma -c cpu",
+    "integration-browser-encrypt": "npm run build && . util/integration-test-vectors.sh && integration-browser encrypt -m \"$ENCRYPT_MANIFEST_LIST\" -k \"$ENCRYPT_KEY_MANIFEST\" -o \"$DECRYPT_ORACLE\" --karma -c cpu",
     "browser-integration": "run-s integration-browser-*",
-    "integration-node-decrypt": "npm run build; integration-node decrypt -v $npm_package_config_localTestVectors -c cpu",
-    "integration-node-decrypt-legacy": "node --security-revert=CVE-2023-46809 ./modules/integration-node/build/main/src/cli.js decrypt -v $npm_package_config_localTestVectors -c cpu --CVE-2023-46809",
-    "integration-node-encrypt": "npm run build; integration-node encrypt -m $npm_package_config_encryptManifestList -k $npm_package_config_encryptKeyManifest -o $npm_package_config_decryptOracle -c cpu",
+    "integration-node-decrypt": "npm run build && . util/integration-test-vectors.sh && integration-node decrypt -v \"$LOCAL_TEST_VECTORS\" -c cpu",
+    "integration-node-decrypt-legacy": ". util/integration-test-vectors.sh && node --security-revert=CVE-2023-46809 ./modules/integration-node/build/main/src/cli.js decrypt -v \"$LOCAL_TEST_VECTORS\" -c cpu --CVE-2023-46809",
+    "integration-node-encrypt": "npm run build && . util/integration-test-vectors.sh && integration-node encrypt -m \"$ENCRYPT_MANIFEST_LIST\" -k \"$ENCRYPT_KEY_MANIFEST\" -o \"$DECRYPT_ORACLE\" -c cpu",
     "node-integration": "run-s integration-node-*",
     "integration": "run-s integration-*",
     "verdaccio": "run-s verdaccio-*",
     "verdaccio-publish": "./util/local_verdaccio_publish",
-    "verdaccio-browser-decrypt": "./util/npx_verdaccio @aws-crypto/integration-browser decrypt -v $PWD/$npm_package_config_localTestVectors --karma -c cpu",
-    "verdaccio-browser-encrypt": "./util/npx_verdaccio @aws-crypto/integration-browser encrypt -m $npm_package_config_encryptManifestList -k $npm_package_config_encryptKeyManifest -o $npm_package_config_decryptOracle --karma -c cpu",
-    "verdaccio-node-decrypt": "./util/npx_verdaccio @aws-crypto/integration-node decrypt -v $PWD/$npm_package_config_localTestVectors -c cpu",
-    "verdaccio-node-encrypt": "./util/npx_verdaccio @aws-crypto/integration-node encrypt -m $npm_package_config_encryptManifestList -k $npm_package_config_encryptKeyManifest -o $npm_package_config_decryptOracle -c cpu",
+    "verdaccio-browser-decrypt": ". util/integration-test-vectors.sh && ./util/npx_verdaccio @aws-crypto/integration-browser decrypt -v \"$PWD/$LOCAL_TEST_VECTORS\" --karma -c cpu",
+    "verdaccio-browser-encrypt": ". util/integration-test-vectors.sh && ./util/npx_verdaccio @aws-crypto/integration-browser encrypt -m \"$ENCRYPT_MANIFEST_LIST\" -k \"$ENCRYPT_KEY_MANIFEST\" -o \"$DECRYPT_ORACLE\" --karma -c cpu",
+    "verdaccio-node-decrypt": ". util/integration-test-vectors.sh && ./util/npx_verdaccio @aws-crypto/integration-node decrypt -v \"$PWD/$LOCAL_TEST_VECTORS\" -c cpu",
+    "verdaccio-node-encrypt": ". util/integration-test-vectors.sh && ./util/npx_verdaccio @aws-crypto/integration-node encrypt -m \"$ENCRYPT_MANIFEST_LIST\" -k \"$ENCRYPT_KEY_MANIFEST\" -o \"$DECRYPT_ORACLE\" -c cpu",
     "test_conditions": "./aws-encryption-sdk-specification/util/test_conditions -s 'modules/**/src/*.ts' -t 'modules/**/test/*.ts' -s 'compliance_exceptions/*.ts'",
     "duvet-report": "aws-encryption-sdk-specification/util/report.js modules/**/src/**/*.ts modules/**/test/**/*.ts compliance_exceptions/*.ts"
   },
-  "config": {
-    "localTestVectors": "aws-encryption-sdk-test-vectors/vectors/awses-decrypt/python-2.3.0.zip",
-    "encryptManifestList": "https://raw.githubusercontent.com/awslabs/aws-crypto-tools-test-vector-framework/master/features/CANONICAL-GENERATED-MANIFESTS/0003-awses-message-encryption.v1.json",
-    "encryptKeyManifest": "https://raw.githubusercontent.com/awslabs/aws-crypto-tools-test-vector-framework/master/features/CANONICAL-GENERATED-MANIFESTS/0002-keys.v1.json",
-    "decryptOracle": "https://xi1mwx3ttb.execute-api.us-west-2.amazonaws.com/api/v0/decrypt"
-  },
   "repository": {
     "type": "git",
     "url": "git@github.com:awslabs/aws-encryption-sdk-javascript.git"
diff --git a/util/integration-test-vectors.sh b/util/integration-test-vectors.sh
new file mode 100644
index 000000000..4f0c1d543
--- /dev/null
+++ b/util/integration-test-vectors.sh
@@ -0,0 +1,9 @@
+# Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# Single source of truth for integration test vector locations.
+# Sourced by the integration-* and verdaccio-* npm scripts.
+export LOCAL_TEST_VECTORS="aws-encryption-sdk-test-vectors/vectors/awses-decrypt/python-2.3.0.zip"
+export ENCRYPT_MANIFEST_LIST="https://raw.githubusercontent.com/awslabs/aws-crypto-tools-test-vector-framework/master/features/CANONICAL-GENERATED-MANIFESTS/0003-awses-message-encryption.v1.json"
+export ENCRYPT_KEY_MANIFEST="https://raw.githubusercontent.com/awslabs/aws-crypto-tools-test-vector-framework/master/features/CANONICAL-GENERATED-MANIFESTS/0002-keys.v1.json"
+export DECRYPT_ORACLE="https://xi1mwx3ttb.execute-api.us-west-2.amazonaws.com/api/v0/decrypt"