Gs1 MCP server

by yaktool.com·com.yaktool/gs1·v0.3.0

GS1 element strings, DataMatrix, eight keys, ITF-14 print specs and price-embedded in-store codes.

C57/100grade C

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C57/100

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74 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

build_gs1_element_string
build_variable_measure_code
check_itf14_spec
decode_variable_measure_code
Decode an RCN-12 / RCN-13 \u2014 the 02 or 20\u201329 number a scale prints on a deli, produce or butcher label \u2014 into item reference, embedded price or weight, and the two check digits it carries. WHY THIS IS NOT A GTIN VALIDATOR: prefixes 02 and 20\u201329 are Restricted Circulation Numbers whose layout is set by each GS1 member organisation, so the same 13 digits mean different things in d
generate_gs1_datamatrix
list_gs1_keys
Return the GS1 keys this server can validate, each with the application identifiers that carry it, what it identifies, and its syntax as written in the GS1 Barcode Syntax Dictionary (for example "N1,zero N13,csum [X..16]" for GRAI). Useful before validating: it tells you which key a given AI belongs to, which keys carry a check digit, and which two (GIAI, GINC) carry none at all. Returns { keys[{k
validate_gs1_extended_key

scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it

1 medium1 low

Code scan2 source files scanned20/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenanceno repository listed3/15
Maintainer identityno repository or website to verify2/10

mediumeval / new Function usedexec.eval

dist/index.js: …ode, sch); const makeValidate = new Function(`${names_1.default.self}`, `${names_1.de…

Overall 57/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y yaktool-gs1-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add gs1 -- npx -y yaktool-gs1-mcp

Is Gs1 MCP server safe?: With care: it is graded C, so read the findings first (57/100). Read the Gs1 safety report
How do I install Gs1?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Gs1 need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Gs1 maintained?: The latest release is v0.3.0.
What can I use instead of Gs1?: Servers from other publishers that do the same job: Loki Mode MCP server, Apify MCP server and Heimdall MCP server. Compare all Gs1 alternatives.

Same job from other publishers: the closest match first, then the best rated.

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