QAmcp

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Directory / Echo UI

Echo UI

Q: Is Echo UI MCP server safe?

QAmcp's test on 7 Nov 2026: None of the hidden-instruction wordings we know were found in its 10 tool descriptions. Its error messages showed no secrets or internal details. All 10 of its tools are labeled read-only. Overall it scored 95/100 on 7 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by echo-ui.com · https://mcp.echo-ui.com/mcp

A tactile React component library, and the design system that keeps your AI agent on-brand.

10 tools✓ all read-only✓ no account neededPricing: not listed

Visit website

95 /100

PASS · WITH NOTES

11 of 11 checks · 7 Nov 2026

Test it now for current results

At a glance

Runs where: On their server. What you send to it goes to them.
What you need: Nothing: it answered without a login
Tools: 10 tools
Its own safety labels: 10 read-only
Memory it takes: About 2,000 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 25.1 KB in our test
Speed: Average answer in our test: 35 ms

Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 7 Nov 2026.

Is Echo UI MCP server safe?

None of the hidden-instruction wordings we know were found in its 10 tool descriptions.
Its error messages showed no secrets or internal details.
All 10 of its tools are labeled read-only.
Overall it scored 95/100 on 7 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What this test does not check

Its source code and packages.
What a tool quietly does behind the scenes, such as writing a file or calling another service.
Instructions hidden inside live tool answers. We only look for those in tool descriptions.
Hidden instructions worded in a way our list doesn't know yet.
Tools that could change something. Those are read, never run.

What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection

Known security advisories

Not looked up yet. QAmcp tests how a server behaves. It does not scan source code.

What it can do

10 tools, in the server's own words.

search_componentsread-only

Find the Echo UI item for a job ("a settings toggle", "confirm a delete") or by name.

get_componentread-only

The full record for one component: description, install command, usage (imports + smallest working snippet), composition (part tree), examples, accessibility, …

get_tokensread-only

The token families: Layer-3 semantic colour roles (--echo-*), sound names, motion's whole vocabulary — the motion tokens, the spring presets, the morph feels a…

get_examplesread-only

Just the usage examples for one component, without the rest of its record.

get_accessibilityread-only

The accessibility rules a consumer of Echo can still get wrong — names on controls, form errors, announcements, focus and target size — and, with a name, what …

check_coderead-only

Echo's check on a piece of code you've written or are about to write: colours, spacing, radii, shadows and timing off Echo's scales, raw elements where Echo ha…

list_stylesread-only

Echo's own styles, the looks Echo publishes, each with its one line and its fingerprint on the seven axes styles are placed on; or, with a name, one of them in…

fit_stylesread-only

Style Fit's shortlist: Echo's styles, and the builder's own passed in, measured against where a product sits on the seven axes (warmth, volume, density, formal…

check_styleread-only

Whether a style.json is one Echo can apply, as `npx echo-ui-cli style check` says it: what stops it, the device it makes (light or dark), what the theme correc…

wear_styleread-only

What a style gives a project: a link that makes the whole Echo site wear its colours, the commands that put it in a project, and, for a project without a termi…

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Ready for the newest MCP version
1 warning
- !Uses an older MCP version (2025-11-25). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
note
!
Follows MCP best practices (not scored yet)
1 tip (not scored)
- !check_code: Labeled read-only, but its "file" input is a file path with no pattern, length limit or fixed choices. Make sure the server first resolves the real path (following links and encoded dots like %2e%2e), then refuses anything outside its folde
note
✓
ConnectsConnected in 487 ms
pass
✓
Lists its toolsFound 10 tools
pass
✓
Every tool is describedAll 10 tools and their inputs are described
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Tools work with good inputs
All good
- ✓search_components: Worked (167 ms)
- ✓get_component: Worked (28 ms)
- ✓get_tokens: Worked (16 ms)
- ✓get_examples: Worked (16 ms)
- ✓get_accessibility: Worked (15 ms)
- ✓check_code: Worked (28 ms)
- ✓fit_styles: Answered with an error, probably because of our sample input: "test" isn't an axis. A profile is seven letters with a number each: W4 V2 D1 F2 E3 C3 O3 (Warmth, Volume, Density, Formality, Era, Craft, …
- ✓check_style: Worked (15 ms)
- and 2 more
pass
✓
Bad inputs give a clean error
All good
- ✓search_components: Refused wrong type for "query" with a clear error
- ✓get_component: Refused missing required input "name" with a clear error
- ✓get_component: Refused wrong type for "name" with a clear error
- ✓get_examples: Refused missing required input "name" with a clear error
- ✓get_examples: Refused wrong type for "name" with a clear error
- ✓get_accessibility: Refused wrong type for "name" with a clear error
- ✓check_code: Refused missing required input "code" with a clear error
- ✓check_code: Refused wrong type for "code" with a clear error
- and 5 more
pass
✓
Fast enough
All good
- ✓Connecting took 487 ms
- ✓Listing tools took 34 ms
- ✓Average tool answer: 35 ms
- ✓search_components: Slowest tool: search_components (167 ms)
pass
✓
No secrets leakedChecked 15 error messages: no secrets or internal details
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://mcp.echo-ui.com/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/com-echo-ui-mcp.svg)](https://qamcp.dev/s/com-echo-ui-mcp.html)

Score over time

7 Nov 202695

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Echo UI, signed in with GitHub, one per person. Reviews never change the score.

Is this your server? Get an alert the moment it breaks.

QAmcp Monitor tests it every hour and emails you when it goes down, the score drops, a tool changes or a secret leaks. Free for 1 server, no card.

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