diff --git a/pyproject.toml b/pyproject.toml
index 463da49556..0b2d66d8db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ dependencies = [
   "faiss-cpu>=1.12.0",
   "filelock>=3.18.0",
   "google-genai>=1.56.0",
+  "httpx[socks]>=0.28.1",
   "lark-oapi>=1.4.15",
   "lxml-html-clean>=0.4.2",
   "mcp>=1.8.0",
diff --git a/requirements.txt b/requirements.txt
index 5c45ecd332..b96d72008f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,6 +20,7 @@ docstring-parser>=0.16
 faiss-cpu>=1.12.0
 filelock>=3.18.0
 google-genai>=1.56.0
+httpx[socks]>=0.28.1
 lark-oapi>=1.4.15
 lxml-html-clean>=0.4.2
 mcp>=1.8.0
diff --git a/tests/test_httpx_socks_dependency.py b/tests/test_httpx_socks_dependency.py
new file mode 100644
index 0000000000..499921253f
--- /dev/null
+++ b/tests/test_httpx_socks_dependency.py
@@ -0,0 +1,113 @@
+import re
+from pathlib import Path
+
+import pytest
+import tomllib
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+REQUIREMENTS_PATH = PROJECT_ROOT / "requirements.txt"
+PYPROJECT_PATH = PROJECT_ROOT / "pyproject.toml"
+HTTPX_SOCKS_PATTERN = re.compile(r"^httpx\[socks\](?:\s*[<>=!~][^;]*)?(?:\s*;.*)?$")
+
+
+def _read_httpx_socks_dependency(entries: list[str]) -> str | None:
+    for entry in entries:
+        candidate = entry.strip()
+        if HTTPX_SOCKS_PATTERN.match(candidate):
+            return candidate
+    return None
+
+
+def _read_requirements() -> list[str]:
+    entries = []
+    for line in REQUIREMENTS_PATH.read_text(encoding="utf-8").splitlines():
+        candidate = line.split("#", 1)[0].strip()
+        if candidate:
+            entries.append(candidate)
+    return entries
+
+
+def _read_pyproject_dependencies() -> list[str]:
+    with PYPROJECT_PATH.open("rb") as file:
+        pyproject = tomllib.load(file)
+    return pyproject["project"]["dependencies"]
+
+
+def test_requirements_include_httpx_socks_dependency() -> None:
+    requirements_dependency = _read_httpx_socks_dependency(_read_requirements())
+
+    assert requirements_dependency is not None, (
+        "Expected httpx[socks] dependency in requirements.txt for SOCKS proxy support"
+    )
+
+
+def test_pyproject_declares_httpx_socks_dependency() -> None:
+    pyproject_dependency = _read_httpx_socks_dependency(_read_pyproject_dependencies())
+
+    assert pyproject_dependency is not None, (
+        "Expected httpx[socks] dependency in pyproject.toml for SOCKS proxy support"
+    )
+
+
+def test_httpx_socks_dependency_spec_matches_between_dependency_files() -> None:
+    requirements_dependency = _read_httpx_socks_dependency(_read_requirements())
+    pyproject_dependency = _read_httpx_socks_dependency(_read_pyproject_dependencies())
+
+    assert requirements_dependency is not None, (
+        "Expected httpx[socks] dependency in requirements.txt for SOCKS proxy support"
+    )
+    assert pyproject_dependency is not None, (
+        "Expected httpx[socks] dependency in pyproject.toml for SOCKS proxy support"
+    )
+    assert requirements_dependency == pyproject_dependency, (
+        "Expected httpx[socks] dependency spec to match between requirements.txt "
+        "and pyproject.toml for SOCKS proxy support"
+    )
+
+
+@pytest.mark.parametrize(
+    "entry",
+    [
+        "httpx[socks]",
+        "httpx[socks]==0.27.0",
+        "httpx[socks]==0.28.1",
+        "httpx[socks]>=0.27.0,<0.28.0",
+        "httpx[socks]>=0.27,<0.29",
+        'httpx[socks]; python_version >= "3.11"',
+        'httpx[socks]>=0.27.0 ; python_version < "3.13"',
+        'httpx[socks] ; python_version < "3.13"',
+        'httpx[socks]  >=0.27  ; python_version < "3.13"',
+    ],
+)
+def test_httpx_socks_pattern_matches_valid_variants(entry: str) -> None:
+    match = HTTPX_SOCKS_PATTERN.match(entry)
+
+    assert match is not None, (
+        f"Expected httpx[socks] dependency pattern to match valid entry for "
+        f"SOCKS proxy support: {entry}"
+    )
+    assert match.group(0) == entry, (
+        f"Expected httpx[socks] dependency pattern to fully match valid entry "
+        f"for SOCKS proxy support: {entry}"
+    )
+
+
+@pytest.mark.parametrize(
+    "entry",
+    [
+        "httpx",
+        "httpx==0.27.0",
+        "httpx[http2]",
+        "httpx[socks-extra]",
+        "httpx [socks]",
+        "someprefix httpx[socks]",
+        "httpx[socks] trailing-text",
+        "httpx[socks] extra ; markers",
+        "httpx[socks]andmore",
+    ],
+)
+def test_httpx_socks_pattern_rejects_invalid_variants(entry: str) -> None:
+    assert HTTPX_SOCKS_PATTERN.match(entry) is None, (
+        f"Expected httpx[socks] dependency pattern to reject invalid entry for "
+        f"SOCKS proxy support: {entry}"
+    )