- Remove trailing whitespace and normalize blank lines
- Unify string quotes and line breaks for long lines
- Sort imports alphabetically across modules
- Defer Brave API key resolution to execute() time instead of __init__,
so env var or config changes take effect without gateway restart
- Improve error message to reference actual config path
(tools.web.search.apiKey) instead of only mentioning env var
Fixes#1069 (issues 1 and 2 of 3)
Previously, WebSearchTool cached the API key in __init__, so keys added
to config.json or env vars after gateway startup were never picked up.
This caused a confusing 'BRAVE_API_KEY not configured' error even after
the key was correctly set (issue #1069).
Changes:
- Store the init-time key separately, resolve via property at each call
- Improve error message to guide users toward the correct fix
Closes#1069
Add URL validation and redirect limits to web_fetch tool to prevent potential security issues:
- Add _validate_url() function to validate URLs before fetching
- Only allow http:// and https:// schemes (prevent file://, ftp://, etc.)
- Verify URL has valid scheme and domain
- Return descriptive error messages for invalid URLs
- Limit HTTP redirects to 5 (down from default 20) to prevent DoS attacks
- Add MAX_REDIRECTS constant for easy configuration
- Explicitly configure httpx.AsyncClient with max_redirects parameter
- Improve error handling with JSON error responses for validation failures
This addresses security concerns identified in code review where web_fetch
had no URL validation or redirect limits, potentially allowing:
- Unsafe URL schemes (file://, etc.)
- Redirect-based DoS attacks
- Invalid URL formats causing unclear errors
Xubin Ren
chengyongru
JK_Lu
Yongfeng Huang
coldxiangyu
haosenwang1018
chtangwin
Cheng Wang