diff --git a/README.md b/README.md
index 9535f09e76..d7df6a1943 100644
--- a/README.md
+++ b/README.md
@@ -1437,6 +1437,8 @@ Custom skill history preserves Unicode line separators inside saved content and
 The bundled `github-deep-research` API client also works without `requests`, using
 Python's standard-library HTTP client. Its fallback preserves spaces, Unicode, and
 reserved characters in search queries and label filters.
+File reads accept raw repository-relative paths and preserve spaces, Unicode,
+`#`, `?`, and literal percent signs with either HTTP client.
 
 Users can explicitly activate an enabled skill for a single turn by starting the request with `/skill-name`, for example `/data-analysis analyze uploads/foo.csv`. DeerFlow loads that skill's `SKILL.md` as hidden current-turn context while leaving the base prompt limited to skill metadata. Slash activation respects disabled skills, custom-agent skill whitelists, and existing channel commands such as `/new` and `/help`.
 
diff --git a/skills/public/github-deep-research/scripts/github_api.py b/skills/public/github-deep-research/scripts/github_api.py
index 61f2501f34..2e9b4dfdf9 100644
--- a/skills/public/github-deep-research/scripts/github_api.py
+++ b/skills/public/github-deep-research/scripts/github_api.py
@@ -8,6 +8,7 @@ import os
 import json
 import sys
 from typing import Any, Dict, List, Optional
+from urllib.parse import quote
 
 try:
     import requests
@@ -113,10 +114,10 @@ class GitHubAPI:
             raise
 
     def get_file_content(self, owner: str, repo: str, path: str) -> str:
-        """Get content of a specific file."""
+        """Get content of a file using its raw repository-relative path."""
         try:
             return self._get(
-                f"/repos/{owner}/{repo}/contents/{path}",
+                f"/repos/{owner}/{repo}/contents/{quote(path, safe='/')}",
                 accept="application/vnd.github.raw",
             )
         except Exception as e:
diff --git a/tests/skills/test_github_deep_research.py b/tests/skills/test_github_deep_research.py
index d175f3d9e8..2168e12443 100644
--- a/tests/skills/test_github_deep_research.py
+++ b/tests/skills/test_github_deep_research.py
@@ -1,4 +1,4 @@
-"""Exercise the GitHub research client's dependency-free HTTP fallback."""
+"""Exercise the GitHub research client's HTTP transports without network IO."""
 
 import http.client
 import io
@@ -37,6 +37,54 @@ def fallback_client(monkeypatch):
     return module["GitHubAPI"](), captured
 
 
+@pytest.fixture(params=["requests", "urllib"])
+def file_content_client(request, monkeypatch):
+    if request.param == "urllib":
+        return request.getfixturevalue("fallback_client")
+
+    requests = pytest.importorskip("requests")
+    script = (
+        Path(__file__).resolve().parents[2]
+        / "skills/public/github-deep-research/scripts/github_api.py"
+    )
+    module = runpy.run_path(str(script))
+    captured = {}
+
+    def fake_send(session, prepared_request, **kwargs):
+        captured["url"] = prepared_request.url
+        response = requests.Response()
+        response.status_code = 200
+        response._content = b'{"ok": true}'
+        return response
+
+    monkeypatch.setattr(requests.Session, "send", fake_send)
+    return module["GitHubAPI"](), captured
+
+
+@pytest.mark.parametrize(
+    ("path", "encoded_path"),
+    [
+        ("docs/C# guide.md", "docs/C%23%20guide.md"),
+        ("docs/query?draft.md", "docs/query%3Fdraft.md"),
+        ("docs/literal%20name.md", "docs/literal%2520name.md"),
+        ("文档/入门 guide.md", "%E6%96%87%E6%A1%A3/%E5%85%A5%E9%97%A8%20guide.md"),
+        ("docs/file name.md", "docs/file%20name.md"),
+        ("src/nested/README.md", "src/nested/README.md"),
+    ],
+)
+def test_file_content_preserves_repository_path(
+    file_content_client, path, encoded_path
+):
+    client, captured = file_content_client
+
+    assert client.get_file_content("owner", "repo", path) == '{"ok": true}'
+
+    url = urlsplit(captured["url"])
+    assert url.path == f"/repos/owner/repo/contents/{encoded_path}"
+    assert url.query == ""
+    assert url.fragment == ""
+
+
 @pytest.mark.parametrize("query", ["bug fix", "C++ & retry#fragment", "模型请求"])
 def test_fallback_search_preserves_query(fallback_client, query):
     client, captured = fallback_client