Shipi18n MCP server

Shipi18n

Catch broken translations before you ship them. An open-source QA gate for your locale files — and, when you want it, an i18n translation engine that runs on your own LLM key.

Your es.json says Hola where the English says Hello {{name}}. The placeholder is gone, the build is green, and the bug ships. Shipi18n finds that, and it finds the harder kind too: the string that has every placeholder and still says the wrong thing.

A real run, not a mockup — docs/check-demo.tape reproduces it.

npx @shipi18n/cli check ./locales -s en

No API key, no account, no config. Missing keys, dropped placeholders, collapsed plurals, empty values and untranslated copy — as human output, JSON, SARIF (GitHub PR annotations) or JUnit.

Found in the wild. The same command on a real project — Hoppscotch's Afrikaans locale as it was when we ran it (structural rules only; the missing-key noise switched off so the placeholder findings stand out):

$ npx @shipi18n/cli check packages/hoppscotch-common/locales -s en \
    --severity 'missing-key=off,untranslated=off,orphan-key=off'

✗ af  coverage 100.0%  7 error(s), 5 warning(s)
    error  import.file_size_limit_exceeded_warning_multiple_files  placeholder-missing — dropped {sizeLimit}
    error  import.file_size_limit_exceeded_warning_single_file  placeholder-missing — dropped {sizeLimit}
    error  state.connected_to  placeholder-missing — dropped {name}
    warning  state.connected_to  placeholder-added — unexpected {naam}
    error  team.invited_to_team  placeholder-missing — dropped {workspace}
    warning  team.invited_to_team  placeholder-added — unexpected {team}
    …

{naam} is {name} translated; vue-i18n will never substitute it. We scan public repos, verify every finding by hand against the source language, and send the fix upstream. Running tally, one row per repo: shipi18n.com/oss — 64 repos scanned · 21 ship a verified broken string · 119 strings verified by hand · 3 fixed upstream in the first week.

Every false positive the scan exposed in our own checker became a fixture in evals/placeholders/corpus.jsonl first.

Shortened. The full README is on GitHub.