diff --git a/api/pyproject.toml b/api/pyproject.toml
index 9e838e1fde..85306d11fa 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -82,6 +82,7 @@ dependencies = [
     "unstructured[docx,epub,md,ppt,pptx]~=0.16.1",
     "validators==0.21.0",
     "yarl~=1.18.3",
+    "json-repair>=0.41.1",
 ]
 # Before adding new dependency, consider place it in
 # alphabet order (a-z) and suitable group.
diff --git a/api/uv.lock b/api/uv.lock
index 4ff9c34446..4384e1abb5 100644
--- a/api/uv.lock
+++ b/api/uv.lock
@@ -1,5 +1,4 @@
 version = 1
-revision = 1
 requires-python = ">=3.11, <3.13"
 resolution-markers = [
     "python_full_version >= '3.12.4' and platform_python_implementation != 'PyPy'",
@@ -1178,6 +1177,7 @@ dependencies = [
     { name = "gunicorn" },
     { name = "httpx", extra = ["socks"] },
     { name = "jieba" },
+    { name = "json-repair" },
     { name = "langfuse" },
     { name = "langsmith" },
     { name = "mailchimp-transactional" },
@@ -1346,6 +1346,7 @@ requires-dist = [
     { name = "gunicorn", specifier = "~=23.0.0" },
     { name = "httpx", extras = ["socks"], specifier = "~=0.27.0" },
     { name = "jieba", specifier = "==0.42.1" },
+    { name = "json-repair", specifier = ">=0.41.1" },
     { name = "langfuse", specifier = "~=2.51.3" },
     { name = "langsmith", specifier = "~=0.1.77" },
     { name = "mailchimp-transactional", specifier = "~=1.0.50" },
@@ -2524,6 +2525,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/91/29/df4b9b42f2be0b623cbd5e2140cafcaa2bef0759a00b7b70104dcfe2fb51/joblib-1.4.2-py3-none-any.whl", hash = "sha256:06d478d5674cbc267e7496a410ee875abd68e4340feff4490bcb7afb88060ae6", size = 301817 },
 ]
 
+[[package]]
+name = "json-repair"
+version = "0.41.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/6d/6a/6c7a75a10da6dc807b582f2449034da1ed74415e8899746bdfff97109012/json_repair-0.41.1.tar.gz", hash = "sha256:bba404b0888c84a6b86ecc02ec43b71b673cfee463baf6da94e079c55b136565", size = 31208 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/10/5c/abd7495c934d9af5c263c2245ae30cfaa716c3c0cf027b2b8fa686ee7bd4/json_repair-0.41.1-py3-none-any.whl", hash = "sha256:0e181fd43a696887881fe19fed23422a54b3e4c558b6ff27a86a8c3ddde9ae79", size = 21578 },
+]
+
 [[package]]
 name = "jsonpath-python"
 version = "1.0.6"
@@ -4074,6 +4084,8 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/af/cd/ed6e429fb0792ce368f66e83246264dd3a7a045b0b1e63043ed22a063ce5/pycryptodome-3.19.1-cp35-abi3-musllinux_1_1_x86_64.whl", hash = "sha256:7c9e222d0976f68d0cf6409cfea896676ddc1d98485d601e9508f90f60e2b0a2", size = 2144914 },
     { url = "https://files.pythonhosted.org/packages/f6/23/b064bd4cfbf2cc5f25afcde0e7c880df5b20798172793137ba4b62d82e72/pycryptodome-3.19.1-cp35-abi3-win32.whl", hash = "sha256:4805e053571140cb37cf153b5c72cd324bb1e3e837cbe590a19f69b6cf85fd03", size = 1713105 },
     { url = "https://files.pythonhosted.org/packages/7d/e0/ded1968a5257ab34216a0f8db7433897a2337d59e6d03be113713b346ea2/pycryptodome-3.19.1-cp35-abi3-win_amd64.whl", hash = "sha256:a470237ee71a1efd63f9becebc0ad84b88ec28e6784a2047684b693f458f41b7", size = 1749222 },
+    { url = "https://files.pythonhosted.org/packages/1d/e3/0c9679cd66cf5604b1f070bdf4525a0c01a15187be287d8348b2eafb718e/pycryptodome-3.19.1-pp27-pypy_73-manylinux2010_x86_64.whl", hash = "sha256:ed932eb6c2b1c4391e166e1a562c9d2f020bfff44a0e1b108f67af38b390ea89", size = 1629005 },
+    { url = "https://files.pythonhosted.org/packages/13/75/0d63bf0daafd0580b17202d8a9dd57f28c8487f26146b3e2799b0c5a059c/pycryptodome-3.19.1-pp27-pypy_73-win32.whl", hash = "sha256:81e9d23c0316fc1b45d984a44881b220062336bbdc340aa9218e8d0656587934", size = 1697997 },
 ]
 
 [[package]]