Json flatten

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

Flatten nested JSON into a single-level object with dotted paths as keys (a.b.0.c), handy for spreadsheets, env vars and diffs.

Name on the gateway: data__json_flatten · read-only.

Parameters

Name	Type	Description
`json` required	`string`	JSON text or an object.
`separator`	`string`	Path separator. Default ".".

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_flatten",
  "arguments": {
    "json": "…"
  }
}

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"

Use the json flatten tool with json set to ….