Does Open-WebSearch work with Claude Code?
Yes. Open-WebSearch passed every step of our test in Claude Code 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 onClaude Pro
App version2.1.296 (Claude Code)
Modelhaiku
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
claude mcp add -s local open-websearch -e MODE=stdio -e DEFAULT_SEARCH_ENGINE=duckduckgo -e FAKE_IP_CIDRS=198.18.0.0/15 -- npx -y open-websearch@latestConnection check
open-websearch: npx -y open-websearch@latest - ✔ ConnectedTools check
verified via task step: agent saw and called the server's tools
Agent task: web search
- Tool calls, in order:
mcp__open-websearch__search,mcp__open-websearch__search
Agent task: page read
- Tool calls, in order:
mcp__open-websearch__fetchWebContent
Raw details from our harness log for this run. Secrets redacted.
Set it up in Claude Code
Copy-paste config for every app is on the Open-WebSearch page. Not connecting? Claude Code MCP troubleshooting.
Other apps we tested it in: Cursor (passed) · Claude Desktop (passed) · ChatGPT (Codex) (passed).