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Json validate

An MCP tool from the Data Formats server, hosted on mcp.hjlabs.in.

Check whether a text is valid JSON. If not, say where it breaks (position, line, column) and the likely cause: trailing comma, single quotes, unquoted key, comments.

Name on the gateway: data__json_validate · read-only.

Parameters

NameTypeDescription
text requiredstringThe text to check.

How to call it

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments
{
  "name": "data__json_validate",
  "arguments": {
    "text": "…"
  }
}

Or connect the Data Formats server directly, which lists 26 tools including this one:

Run in your terminal
claude mcp add --transport http hj-data https://mcp.hjlabs.in/mcp/data \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the json validate tool with text set to ….

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