QAmcp

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Directory / EAN Check barcode tools

EAN Check barcode tools

Q: Is EAN Check barcode tools 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 100/100 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 eancheck.com · https://eancheck.com/api/mcp

GS1 check digits, code identification, UPC-E and ISBN conversion, GTIN repair and barcodes.

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

Visit website

100 /100

PASS

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 1,600 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 0.1 KB in our test
Speed: Average answer in our test: 116 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 EAN Check barcode tools 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 100/100 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

It lists no public code, so there is nothing to look up in GitHub Security Advisories or OSV.dev. QAmcp tests how a server behaves. It does not scan source code.

What it can do

10 tools, in the server's own words.

calculate_check_digitsread-only

Add the GS1 check digit to GTIN numbers that are missing it (7, 11, 12 or 13 digits become GTIN-8, UPC-A, EAN-13 or GTIN-14).

validate_gtinsread-only

Check complete GTIN, EAN, UPC and ITF-14 numbers: says for each one whether the check digit is right and which GTIN length it is.

identify_coderead-only

Find out what kind of code a string is: GTIN, ISBN, ISSN, SSCC, GLN, GS1-128 data, GS1 Digital Link, VIN, IMEI, ASIN, Amazon LPN or FNSKU, with its check digit…

check_amazon_coderead-only

Read the code from an Amazon sticker: tells an LPN (License Plate Number) from an FNSKU, ASIN, FBA box label, Amazon Logistics tracking number or UPC/EAN, and …

convert_upc_eread-only

Convert a UPC-E (6, 7 or 8 digits) to the full 12-digit UPC-A, or a UPC-A to UPC-E when one of the four GS1 zero-suppression rules fits.

convert_isbnread-only

Convert an ISBN-10 to ISBN-13 or back, with the check digit recalculated and the hyphenated form.

repair_gtinread-only

Recover a GTIN with unreadable digits: mark each unknown digit with ?

parse_gs1read-only

Split GS1 data (GS1-128, GS1 DataMatrix, Digital Link) into its Application Identifiers, with the name of each AI and any format error.

make_barcoderead-only

Draw a print-ready barcode and return it as SVG (or EPS) in millimetres, plus a link that opens it in the generator.

barcode_sizeread-only

Give the printed size of a barcode type at a GS1 magnification (retail and carton types) or an X-dimension, with the GS1 allowed range.

Test results

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

✓
ConnectsConnected in 229 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
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
- ✓calculate_check_digits: Worked (76 ms)
- ✓validate_gtins: Worked (88 ms)
- ✓identify_code: Worked (80 ms)
- ✓check_amazon_code: Worked (67 ms)
- ✓convert_upc_e: Worked (73 ms)
- ✓convert_isbn: Worked (69 ms)
- ✓repair_gtin: Worked (82 ms)
- ✓parse_gs1: Worked (75 ms)
- and 2 more
pass
✓
Bad inputs give a clean error
All good
- ✓calculate_check_digits: Refused missing required input "codes" with a clear error
- ✓calculate_check_digits: Refused wrong type for "codes" with a clear error
- ✓validate_gtins: Refused missing required input "codes" with a clear error
- ✓validate_gtins: Refused wrong type for "codes" with a clear error
- ✓identify_code: Refused missing required input "code" with a clear error
- ✓identify_code: Refused wrong type for "code" with a clear error
- ✓check_amazon_code: Refused missing required input "code" with a clear error
- ✓check_amazon_code: Refused wrong type for "code" with a clear error
- and 12 more
pass
✓
Fast enough
All good
- ✓Connecting took 229 ms
- ✓Listing tools took 161 ms
- ✓Average tool answer: 116 ms
- ✓barcode_size: Slowest tool: barcode_size (465 ms)
pass
✓
No secrets leakedChecked 20 error messages: no secrets or internal details
pass
✓
Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
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://eancheck.com/api/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-eancheck-barcode-tools.svg)](https://qamcp.dev/s/com-eancheck-barcode-tools.html)

Score over time

7 Nov 2026100

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use EAN Check barcode tools, 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.

Have a concern, or want it removed? Ask us and we'll take it off the list. How the directory works