Does Open-WebSearch work with Cursor?
Yes. Open-WebSearch passed every step of our test in Cursor on Oct 13, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.
Result
ResultPassed
Date testedOct 13, 2026
Plan tested onCursor Pro+
App version2026.10.12-d47ca18
Modelgpt-5.3-codex-low
Steps
- install OK
- connected OK
- tools visible OK
- agent task: web search OKlive keyless web search
- agent task: page read OKfetch a public page and return its content
From our own harness run, not the maker’s claims. How we test.
What happened in this run
Install config we used
{
"mcpServers": {
"open-websearch": {
"command": "npx",
"args": [
"-y",
"open-websearch@latest"
],
"env": {
"MODE": "stdio",
"DEFAULT_SEARCH_ENGINE": "duckduckgo",
"FAKE_IP_CIDRS": "198.18.0.0/15"
}
}
}
}Connection check
open-websearch: readyTools the app saw
6 tools in the app (protocol check found 6).
Agent task: web search
- Tool calls, in order:
open-websearch:search
Agent task: page read
- Tool calls, in order:
open-websearch:fetchWebContent,open-websearch:fetchWebContent
Raw details from our harness log for this run. Secrets redacted.
Set it up in Cursor
Copy-paste config for every app is on the Open-WebSearch page. Not connecting? Cursor MCP troubleshooting.
Other apps we tested it in: Claude Code (passed) · Claude Desktop (passed) · ChatGPT (Codex) (passed).