Use ICU MessageFormat Validator with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. A deterministic validator for ICU MessageFormat strings to prevent i18n breakage from unbalanced braces or incorrect syntax.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Complete set · 3 capabilities
The complete ICU MessageFormat Validator capability set.
These are the exact actions your AI can choose when you ask it to work with ICU MessageFormat Validator.
01-03
3 capabilities in this set.
Part of 3 available through ICU MessageFormat Validator.
- 01
Validate structural braces
Validate the structural integrity of braces and quotes in an ICU message
- 02
Extract template variables
}`. Extract template variables from an ICU message
- 03
Validate category logic
Validate the logic within plural/select blocks
Observed, not estimated
565ms average. Fast in production.
ICU MessageFormat Validator is checked daily against the live service.
- Fastest day
- 464ms
- Slowest day
- 667ms
- 14-day trend
- Slowing+18%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of ICU MessageFormat Validator, so you can see the experience inside your AI.
It does not authenticate your account with ICU MessageFormat Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
ICU MessageFormat Validator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_IaQlGvSL4zMDdiFv0D4FuL8L3jDEnXfQZ1I61OIc/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — ICU MessageFormat Validator capabilities are ready to use.
{
"mcpServers": {
"icu-messageformat-validator-alternative-mcp": {
"url": "https://edge.vinkius.com/vk_preview_IaQlGvSL4zMDdiFv0D4FuL8L3jDEnXfQZ1I61OIc/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
FAQ
Questions ICU MessageFormat Validator owners ask.
- 01
How does the validator handle single quotes?
The validate_structural_braces capability implements a state machine to track escaping. It recognizes that two consecutive single quotes (double-single-quote) represent a literal single quote, preventing the parser from incorrectly terminating an escaped sequence.
- 02
What happens if I use an invalid category in a plural block?
If you include an unsupported keyword like 'none' or 'all', the validate_category_logic capability will flag a syntax error, identifying the exact character offset where the invalid category was detected.
- 03
Can I use this to find all variables in my translation files?
Yes, by using the extract_template_variables capability, you can provide any ICU string and receive a complete list of all unique variable names found within the template, such as 'userName' or 'itemCount'.
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