Does MDN MCP (experimental) work with Claude Code?

Q: Does MDN MCP (experimental) work with Claude Code?

Yes. In our test on 2026-10-23 (Claude Code 2.1.296, mcp-remote 0.15.2, plan: Claude Pro), MDN MCP (experimental) passed install, connect, tools and an agent task.

Yes. MDN MCP (experimental) passed every step of our test in Claude Code on Oct 23, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.

Result

ResultPassed

Date testedOct 23, 2026

Plan tested onClaude Pro

App versionClaude Code 2.1.296

Server packagemcp-remote 0.15.2

Connect timeconnected in 3.4s

Modelhaiku

Steps

install OK
connect OK
tools visible OK
agent task: mdn docs fact OKanswer a fact from current MDN docs fetched by the server (MDN MCP only covers web platform docs)

From our own harness run, not the maker’s claims. How we test.

Versions tested

Claude Code 2.1.296 · mcp-remote 0.15.2 · connected in 3.4s · tested Oct 23, 2026

Server package tested: mcp-remote 0.15.2 (npm, Node v20.19.2; resolved 2026-10-23)

Direct and key dependencies as resolved: express 4.22.3 · open 10.2.0 · strict-url-sanitise 0.0.1 · undici 7.30.1

All 79 resolved dependencies

accepts==1.3.8
array-flatten==1.1.1
body-parser==1.20.9
bundle-name==4.1.1
bytes==3.1.2
call-bind-apply-helpers==1.0.2
call-bound==1.0.4
content-disposition==0.5.4
content-type==1.0.5
cookie==0.7.2
cookie-signature==1.0.7
debug==2.6.9
default-browser==5.5.1
default-browser-id==5.0.1
define-lazy-prop==3.0.0
depd==2.0.0
destroy==1.2.0
dunder-proto==1.0.1
ee-first==1.1.1
encodeurl==2.0.0
es-define-property==1.0.1
es-errors==1.3.0
es-object-atoms==1.1.2
escape-html==1.0.3
etag==1.8.1
express==4.22.3
finalhandler==1.3.2
forwarded==0.2.0
fresh==0.5.2
function-bind==1.1.2
get-intrinsic==1.3.0
get-proto==1.0.1
gopd==1.2.0
has-symbols==1.1.0
hasown==2.0.4
http-errors==2.0.1
iconv-lite==0.4.24
inherits==2.0.4
ipaddr.js==1.9.1
is-docker==3.0.0
is-inside-container==1.0.0
is-wsl==3.1.1
math-intrinsics==1.1.0
media-typer==0.3.0
merge-descriptors==1.0.3
methods==1.1.2
mime==1.6.0
mime-db==1.52.0
mime-types==2.1.35
ms==2.0.0, 2.1.3
negotiator==0.6.3
object-inspect==1.13.4
on-finished==2.4.2
open==10.2.0
parseurl==1.3.3
path-to-regexp==0.1.13
proxy-addr==2.0.8
qs==6.16.1
range-parser==1.2.1
raw-body==2.5.3
run-applescript==7.1.0
safe-buffer==5.2.1
safer-buffer==2.1.2
send==0.19.2
serve-static==1.16.3
setprototypeof==1.2.0
side-channel==1.1.1
side-channel-list==1.0.1
side-channel-map==1.0.1
side-channel-weakmap==1.0.2
statuses==2.0.2
strict-url-sanitise==0.0.1
toidentifier==1.0.1
type-is==1.6.18
undici==7.30.1
unpipe==1.0.0
utils-merge==1.0.1
vary==1.1.2
wsl-utils==0.1.0

Captured with: npm ls --all --json in the npx env.

What happened in this run

Install config we used

claude mcp add -s local mdn-mcp -- npx -y mcp-remote https://mcp.mdn.mozilla.net/

Connection check

mdn-mcp: npx -y mcp-remote https://mcp.mdn.mozilla.net/ - ✔ Connected

Tools check

verified via task step: agent saw and called the server's tools

Agent task: mdn docs fact

Tool calls, in order: mcp__mdn-mcp__search

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 MDN MCP (experimental) page. Not connecting? Claude Code MCP troubleshooting.

Other apps we tested it in: Cursor (passed) · ChatGPT (Codex) (passed).

All MCP servers tested in Claude Code