Tools changed: MUI MCP (official)

The official MUI MCP server, published as npm package @mui/mcp version 0.1.9 under an MIT license, scored 100/100 on a five-test evaluation (install, handshake, maintenance, docs, license) run on 2026-11-11, completing an MCP stdio handshake with no credentials and listing 3 tools: useMuiDocs, fetchDocs and generateReactCode. The tester reported that tools/list initially showed only 2 tools because useMuiDocs registers only after the docs catalog loads, roughly 8 seconds after start, causing a first call to fail with 'Tool useMuiDocs not found' before a rerun succeeded; both of 2 read calls passed. The 3 tools carry an estimated context cost of about 2,788 tokens (cl100k_base), roughly 34% of an 8k context, and the package had 5,876 GitHub stars with a repo push 0 days before the test; security was not audited and no functional task runs were performed.

MUI MCP official 100 /100 Score = points from our five tests install, handshake, maintenance, docs, license . Not a quality or security rating. Methodology https://testedmcp.com/methodology/ - Install20/20 - Handshake30/30 - Maintenance25/25 - Docs15/15 - License10/10 Tested npm @mui/mcp 0.1.9 MIT; repo mui/mui-x packages/mcp, 5,876 GitHub stars when checked . Stdio, 3 tools useMuiDocs, fetchDocs, generateReactCode , no account. tools/list first showed 2 tools; useMuiDocs registers only after the docs catalog loads 3 tools about 8 s after start , so our first call failed with 'Tool useMuiDocs not found' and was rerun after waiting. Real calls: useMuiDocs for @mui/material returned the Material UI 9.5.0 docs index, and fetchDocs returned the React Button page. Tool-call test 2026-11-11, direct MCP stdio client, no LLM : pass . 2 of 2 read calls passed after waiting for the late-registered useMuiDocs tool , no key. Evidence: local test run, Nov 11, 2026. Transport tested 2026-11-11 : stdio Token cost estimate : approx. 2788 tokens, cl100k estimate 3 tools, measured 2026-11-11, version 0.1.9 . This is an estimate from our testing of the tool names, descriptions and input schemas, counted with cl100k base. Permissions: 1 read, 0 write state-changing , 2 unclassified · Auth: none · Rate limit: unknown · Pricing unit: unknown Auth: none. Rate limit: unknown. Pricing unit: unknown. - fetchDocs — read - generateReactCode — unclassified - useMuiDocs — unclassified handshake and tools listed without a recorded key or OAuth Score 100/100 · Tools 3 · Token cost approx. 2,788 tokens · Compare https://testedmcp.com/compare/?s=mui-mcp · Last tested 2026-11-11 · Version tested 0.1.9 · Package @mui/mcp https://www.npmjs.com/package/@mui/mcp mui/mui-x https://testedmcp.com/go/mui-mcp/ Summary: MUI MCP official completed an MCP handshake without credentials and exposed 3 tools. Evidence summary - Handshake - pass - Tools listed - 3 - Context cost - approx. 2788 tokens, cl100k estimate 3 tools, measured 2026-11-11, version 0.1.9; an estimate ranking https://testedmcp.com/best/lowest-context-cost-mcp-servers/ · add up your servers' context cost https://testedmcp.com/guides/how-much-context-mcp-servers-cost/ - API key - No key needed for the tools we called - Tested - 2026-11-11 Test results | Test | Result | Points | Evidence | |---|---|---|---| | install | pass | 20 | npm install @mui/mcp Node 20, Linux succeeded in 1s. | | handshake | pass | 30 | MCP initialize + tools/list over stdio succeeded with no credentials; 3 tools listed in 2.9s. | | maintenance | pass | 25 | Repo pushed 0 days before test; 5,876 GitHub stars. | | docs | pass | 15 | README over 3,000 chars; install instructions present; mcpServers config example present. Check of the package's own README README shipped in npm package . | | license | pass | 10 | MIT OSI-approved . | Local-model readiness Token cost estimate : approx. 2788 tokens, cl100k estimate for 3 tools · about 34% of an 8k context. This is an estimate from our testing counted with cl100k base . Small-model friendly schema heuristic, not a model result : unknown . Not tested Small-model task runs: Not yet tested. What we tested and what we didn't Tested on 2026-11-11 - Install from the registry - We connected with no credentials and asked for its tool list: it listed 3 tools Method details: MCP initialize then tools/list - Maintenance signals last push, archived/deprecated status - Docs README length, install and config example - License OSI-approved or not - Token cost estimate Not tested - Security: not audited no code review, no permission or data-flow analysis - Real tasks no functional task runs yet - Behaviour with real credentials or a real account - Performance, rate limits or load - Correctness of results beyond the listed tasks Methodology: how we test https://testedmcp.com/methodology/ . A high score means it installs and responds, not that giving it access to your data carries no risk. Known security issues Checked on 2026-11-11 for version 0.1.9 against OSV, GitHub advisories, GitHub repository advisories. Scope: the package itself; dependencies not scanned. No published advisories found in OSV and GitHub advisories for @mui/mcp 0.1.9 as of 2026-11-11. This is not a security audit. Monthly roundup: MCP security issues, October 2026 https://testedmcp.com/security/2026-10/ . Tool list changes ↻ Tools changed non-breaking 2026-11-13 Tool list changed since last test 2026-11-11 → 2026-11-13 : 1 tool description changed: useMuiDocs. Confirmed by a re-run with the same arguments. Show the diff - Changed description: useMuiDocs Snapshot hash fingerprint of the tool list de77406c9ba8 : SHA-256 of the canonical tool names, descriptions and input schemas. If it changes, the tool list changed. Raw test record JSON { "name": "@mui/mcp", "version": "0.1.9", "registry": "npm", "status": "working", "tested": "2026-11-11", "tools count": 3, "deprecated": false, "archived": false, "tests": { "install": "pass", 20, " npm install @mui/mcp Node 20, Linux succeeded in 1s." , "handshake": "pass", 30, "MCP initialize + tools/list over stdio succeeded with no credentials; 3 tools listed in 2.9s." , "maintenance": "pass", 25, "Repo pushed 0 days before test; 5,876 GitHub stars." , "docs": "pass", 15, "README over 3,000 chars; install instructions present; mcpServers config example present. Check of the package's own README README shipped in npm package ." , "license": "pass", 10, "MIT OSI-approved ." } } Install npx -y @mui/mcp Pin the version we tested npx -y @mui/mcp@0.1.9 tested 2026-11-11. Newer versions may differ and were not tested by us. { "mcpServers": { "mui-mcp": { "command": "npx", "args": "-y", "@mui/mcp@0.1.9" } } } Tools listed fetchDocs , generateReactCode , useMuiDocs Tool history: captured Nov 13, 2026. All tool history https://testedmcp.com/changes/ . Quick config { "mcpServers": { "mui-mcp": { "command": "npx", "args": "-y", "@mui/mcp" } } } Add to config https://testedmcp.com/free-tools/mcp-config-generator/?s=mui-mcp Opens the config generator with this server selected. Setup 1. Install. Run npm install @mui/mcp Node 20 . This is the exact command we ran on 2026-11-11. 2. Configure. Add the mcpServers entry below to your MCP client config. 3. Verify. Restart the client and check that tools/list returns tools 3 in our test . { "mcpServers": { "mui-mcp": { "command": "npx", "args": "-y", "@mui/mcp" } } } Test history - 2026-11-13: Tools changed non-breaking - 2026-11-11: New Related: Best dev MCP servers https://testedmcp.com/best/dev-mcp-servers/ · Troubleshooting: Tool not found after start https://testedmcp.com/troubleshooting/mcp-tool-not-found-right-after-start/ FAQ Is MUI MCP deprecated? No. @mui/mcp was not deprecated or archived when we last tested it on 2026-11-11. What replaces MUI MCP? Nothing; MUI MCP official is not deprecated as of 2026-11-11. Does MUI MCP need an API key? No. It completed an MCP handshake with no credentials and listed 3 tools. Embed the badge Every tested server gets a free embeddable badge. It shows the current score and test date and expires after 90 days. Testing is free; payment never changes a score.