diff --git a/package-lock.json b/package-lock.json
index 0821f299..752cb0f7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5906,6 +5906,17 @@
         "semver": "^7.0.0"
       }
     },
+    "node_modules/busboy": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/busboy/-/busboy-1.6.0.tgz",
+      "integrity": "sha512-8SFQbg/0hQ9xy3UNTB0YEnsNBbWfhf7RtnzpL7TkBiTBRfrQ9Fxcnz7VJsleJpyp6rVLvXiuORqjlHi5q+PYuA==",
+      "dependencies": {
+        "streamsearch": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=10.16.0"
+      }
+    },
     "node_modules/byline": {
       "version": "5.0.0",
       "dev": true,
@@ -12797,6 +12808,14 @@
         "node": ">= 4.0.0"
       }
     },
+    "node_modules/streamsearch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-1.1.0.tgz",
+      "integrity": "sha512-Mcc5wHehp9aXz1ax6bZUyY5afg9u2rv5cqQI3mRrYkGC8rW2hM02jWuwjtL++LS5qinSyhj2QfLyNsuc+VsExg==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/string_decoder": {
       "version": "1.3.0",
       "license": "MIT",
@@ -13527,6 +13546,17 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/undici": {
+      "version": "5.24.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.24.0.tgz",
+      "integrity": "sha512-OKlckxBjFl0oXxcj9FU6oB8fDAaiRUq+D8jrFWGmOfI/gIyjk/IeS75LMzgYKUaeHzLUcYvf9bbJGSrUwTfwwQ==",
+      "dependencies": {
+        "busboy": "^1.6.0"
+      },
+      "engines": {
+        "node": ">=14.0"
+      }
+    },
     "node_modules/unique-filename": {
       "version": "1.1.1",
       "dev": true,
@@ -14148,7 +14178,8 @@
         "@aws-sdk/s3-request-presigner": "^3.226.0",
         "@sentry/serverless": "^7.22.0",
         "@web3-storage/content-claims": "^3.0.1",
-        "multiformats": "^11.0.2"
+        "multiformats": "^11.0.2",
+        "undici": "^5.24.0"
       },
       "devDependencies": {
         "@ipld/car": "^5.1.1",
@@ -17748,7 +17779,8 @@
         "ava": "^4.3.3",
         "multiformats": "^11.0.2",
         "nanoid": "^4.0.0",
-        "testcontainers": "^8.13.0"
+        "testcontainers": "^8.13.0",
+        "undici": "*"
       },
       "dependencies": {
         "@ipld/dag-pb": {
@@ -18687,6 +18719,14 @@
         "semver": "^7.0.0"
       }
     },
+    "busboy": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/busboy/-/busboy-1.6.0.tgz",
+      "integrity": "sha512-8SFQbg/0hQ9xy3UNTB0YEnsNBbWfhf7RtnzpL7TkBiTBRfrQ9Fxcnz7VJsleJpyp6rVLvXiuORqjlHi5q+PYuA==",
+      "requires": {
+        "streamsearch": "^1.1.0"
+      }
+    },
     "byline": {
       "version": "5.0.0",
       "dev": true
@@ -22900,6 +22940,11 @@
         }
       }
     },
+    "streamsearch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-1.1.0.tgz",
+      "integrity": "sha512-Mcc5wHehp9aXz1ax6bZUyY5afg9u2rv5cqQI3mRrYkGC8rW2hM02jWuwjtL++LS5qinSyhj2QfLyNsuc+VsExg=="
+    },
     "string_decoder": {
       "version": "1.3.0",
       "requires": {
@@ -23381,6 +23426,14 @@
         "which-boxed-primitive": "^1.0.2"
       }
     },
+    "undici": {
+      "version": "5.24.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.24.0.tgz",
+      "integrity": "sha512-OKlckxBjFl0oXxcj9FU6oB8fDAaiRUq+D8jrFWGmOfI/gIyjk/IeS75LMzgYKUaeHzLUcYvf9bbJGSrUwTfwwQ==",
+      "requires": {
+        "busboy": "^1.6.0"
+      }
+    },
     "unique-filename": {
       "version": "1.1.1",
       "dev": true,
diff --git a/roundabout/globals.js b/roundabout/globals.js
new file mode 100644
index 00000000..7e1849e0
--- /dev/null
+++ b/roundabout/globals.js
@@ -0,0 +1,5 @@
+// CARReaderStream used by content-claims client expects global TransformStream and fetch
+import { TransformStream } from 'node:stream/web'
+import { fetch } from 'undici'
+globalThis.TransformStream = TransformStream
+globalThis.fetch = fetch
diff --git a/roundabout/package.json b/roundabout/package.json
index 024451b6..61c7b6ec 100644
--- a/roundabout/package.json
+++ b/roundabout/package.json
@@ -10,7 +10,8 @@
     "@aws-sdk/s3-request-presigner": "^3.226.0",
     "@sentry/serverless": "^7.22.0",
     "@web3-storage/content-claims": "^3.0.1",
-    "multiformats": "^11.0.2"
+    "multiformats": "^11.0.2",
+    "undici": "^5.24.0"
   },
   "devDependencies": {
     "@ipld/car": "^5.1.1",
diff --git a/roundabout/piece.js b/roundabout/piece.js
index 6464c6be..b711cb11 100644
--- a/roundabout/piece.js
+++ b/roundabout/piece.js
@@ -1,3 +1,5 @@
+// CARReaderStream used by content-claims client expects global TransformStream and fetch
+import './globals.js'
 import { read } from '@web3-storage/content-claims/client'
 import * as Raw from 'multiformats/codecs/raw'