diff --git a/yarn-project/foundation/src/buffer/index.ts b/yarn-project/foundation/src/buffer/index.ts
index 0950f7bc4122..a1071b998f9e 100644
--- a/yarn-project/foundation/src/buffer/index.ts
+++ b/yarn-project/foundation/src/buffer/index.ts
@@ -1,2 +1,3 @@
 export * from './buffer32.js';
 export * from './buffer16.js';
+export * from './utils.js';
diff --git a/yarn-project/foundation/src/buffer/utils.test.ts b/yarn-project/foundation/src/buffer/utils.test.ts
new file mode 100644
index 000000000000..ce07775acd15
--- /dev/null
+++ b/yarn-project/foundation/src/buffer/utils.test.ts
@@ -0,0 +1,35 @@
+import { trimmedBytesLength } from './utils.js';
+
+describe('trimmedBytesLength', () => {
+  it('returns 0 for an empty buffer', () => {
+    expect(trimmedBytesLength(new Uint8Array([]))).toBe(0);
+  });
+
+  it('returns 0 for an all-zeros buffer', () => {
+    expect(trimmedBytesLength(new Uint8Array([0, 0, 0, 0]))).toBe(0);
+  });
+
+  it('returns full length when there are no trailing zeros', () => {
+    expect(trimmedBytesLength(new Uint8Array([1, 2, 3]))).toBe(3);
+  });
+
+  it('excludes trailing zeros', () => {
+    expect(trimmedBytesLength(new Uint8Array([1, 2, 0, 0]))).toBe(2);
+  });
+
+  it('preserves leading zeros', () => {
+    expect(trimmedBytesLength(new Uint8Array([0, 0, 1, 0, 0]))).toBe(3);
+  });
+
+  it('preserves interior zeros', () => {
+    expect(trimmedBytesLength(new Uint8Array([1, 0, 0, 2, 0]))).toBe(4);
+  });
+
+  it('handles a single non-zero byte', () => {
+    expect(trimmedBytesLength(new Uint8Array([0, 0, 5]))).toBe(3);
+  });
+
+  it('handles a single zero byte', () => {
+    expect(trimmedBytesLength(new Uint8Array([0]))).toBe(0);
+  });
+});
diff --git a/yarn-project/foundation/src/buffer/utils.ts b/yarn-project/foundation/src/buffer/utils.ts
new file mode 100644
index 000000000000..d5958f8fcdd4
--- /dev/null
+++ b/yarn-project/foundation/src/buffer/utils.ts
@@ -0,0 +1,8 @@
+/** Returns the number of bytes in the buffer, excluding any trailing zero bytes. */
+export function trimmedBytesLength(buf: Uint8Array): number {
+  let end = buf.length;
+  while (end > 0 && buf[end - 1] === 0) {
+    end--;
+  }
+  return end;
+}
diff --git a/yarn-project/sequencer-client/src/publisher/sequencer-publisher.ts b/yarn-project/sequencer-client/src/publisher/sequencer-publisher.ts
index 7398d2fa67cb..c0bd98f6bf6f 100644
--- a/yarn-project/sequencer-client/src/publisher/sequencer-publisher.ts
+++ b/yarn-project/sequencer-client/src/publisher/sequencer-publisher.ts
@@ -28,6 +28,7 @@ import { FormattedViemError, formatViemError, mergeAbis, tryExtractEvent } from
 import { sumBigint } from '@aztec/foundation/bigint';
 import { toHex as toPaddedHex } from '@aztec/foundation/bigint-buffer';
 import { CheckpointNumber, SlotNumber } from '@aztec/foundation/branded-types';
+import { trimmedBytesLength } from '@aztec/foundation/buffer';
 import { pick } from '@aztec/foundation/collection';
 import type { Fr } from '@aztec/foundation/curves/bn254';
 import { TimeoutError } from '@aztec/foundation/error';
@@ -547,7 +548,16 @@ export class SequencerPublisher {
       });
       return { failedActions: requests.map(r => r.action) };
     } else {
-      this.log.verbose(`Published bundled transactions (${actionsListStr})`, { result, requests });
+      this.log.verbose(`Published bundled transactions (${actionsListStr})`, {
+        result,
+        requests: requests.map(r => ({
+          ...r,
+          // Avoid logging large blob data
+          blobConfig: r.blobConfig
+            ? { ...r.blobConfig, blobs: r.blobConfig.blobs.map(b => ({ size: trimmedBytesLength(b) })) }
+            : undefined,
+        })),
+      });
       const successfulActions: Action[] = [];
       const failedActions: Action[] = [];
       for (const request of requests) {