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glot

Official registry AI and agents

AI-native i18n: live string context, validated translations, glossary for your app catalogs

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package glot-i18n
Claude Code 
claude mcp add glot -e 'ANTHROPIC_API_KEY=<your anthropic_api_key>' -- npx -y glot-i18n@0.4.0 mcp
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "glot": {
            "command": "npx",
            "args": [
                "-y",
                "glot-i18n@0.4.0",
                "mcp"
            ],
            "env": {
                "ANTHROPIC_API_KEY": "<your anthropic_api_key>"
            }
        }
    }
}

Environment variables

  • ANTHROPIC_API_KEY secret LLM key used by the translate tool (or OPENAI_API_KEY, per glot.toml). Not needed for context, check or add.

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

glot

Your coding agent localizes your app. Deterministic code guarantees that nothing broken or too long lands in your catalogs.

The real glot translate binary. The LLM is scripted to get three strings wrong on its first pass; every refusal and message is glot's. Reproduce it, or rerun it with a real model doing the retries: docs/launch/record/refusal.sh.

npx glot-i18n init        # detect your i18n stack, write glot.toml + rules for your coding agent
npx glot-i18n i18nize     # hardcoded UI strings -> keys, components rewritten (next-intl, react-i18next)
npx glot-i18n translate   # translate only the delta; invalid output is refused, retried, never written

Or all of it in one idempotent step: npx glot-i18n localize --yes --targets fr,de (init if needed → i18nize → translate → check).

Guarantees

Checked by code on every LLM output, on glot set, in the overlay and in CI (glot check). A refused string goes back to the model with the exact reason (2 retries, then the fallback model); if it still fails, nothing is written.
Placeholders{name}, {{name}}, tags: same set as the source, none invented, none translated. ICU, i18next and MessageFormat 2 syntax parsed.
CLDR pluralsEvery category the target locale needs (pl: one, few, many, other; ar: six of them).
Glossaryglossary.toml in your repo: required and forbidden translations, do-not-translate terms.
Pixel widthglot measure records each key's box and font from your running app; translations are shaped with that font and refused if wider. glot fit shortens what already overflows.
Lockfileglot.lock hashes source and target: only the delta is translated, and a hand edit is never overwritten without --force.
MCP for your agentglot mcp gives Claude Code, Cursor or Codex your keys, their usages (file:line, UI role), the glossary, and tools that add strings through the same validator.

Works with the i18n library you already use, adds no runtime, bring your own LLM key (Anthropic, OpenAI, any OpenAI-compatible endpoint). MIT.

More: Docs (concepts, CLI, MCP, integrations & GitHub Action, agent skill, AI-translation provenance, FAQ & costs) · Labs (SEO, database content, emails/images, task parity, plural coverage…) · Self-hosted server (experimental) · Demo app · Architecture

Frequently asked questions

What is glot?

AI-native i18n: live string context, validated translations, glossary for your app catalogs

How do I install glot?

It runs on your machine. In Claude Code: claude mcp add glot -e 'ANTHROPIC_API_KEY=<your anthropic_api_key>' -- npx -y glot-i18n@0.4.0 mcp. For other clients, paste the JSON configuration from this page into their MCP settings.

Does glot need an API key?

Yes. It expects ANTHROPIC_API_KEY, which you set in its configuration.

Is glot open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains glot?

It is published by MattJeff. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.