Json Flatten API

POST https://api.findutils.com/api/tools/json-flatten/execute

Flatten a nested JSON object into a single-level map with dot-separated keys.

Needs an API key. Running a tool needs an API key. Keys are not for sale yet: ask for early access. About API keys

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Request body

application/json

json

string required

JSON object to flatten.
separator

string optional

Key separator. Defaults to ".". Default ".".
arrayNotation

string optional

How an array index is written: "bracket" gives items[0], "dot" gives items.0. Bracket is the default because it keeps an array index distinct from an object key that happens to be a number. One of bracket · dot. Default "bracket".

Example arguments

Verified

{
  "json": {
    "a": {
      "b": 1
    }
  }
}

curl -X POST https://api.findutils.com/api/tools/json-flatten/execute \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "json": "{\"a\":{\"b\":1}}"
  }'

const response = await fetch('https://api.findutils.com/api/tools/json-flatten/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', Authorization: 'Bearer YOUR_API_KEY' },
  body: JSON.stringify({"json":"{\"a\":{\"b\":1}}"}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/json-flatten/execute",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"json":"{\"a\":{\"b\":1}}"},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/json-flatten/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json', 'Authorization: Bearer YOUR_API_KEY'],
    CURLOPT_POSTFIELDS => '{"json":"{\"a\":{\"b\":1}}"}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call json_flatten from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: API key
REST id: json-flatten
MCP name: json_flatten
Category: Data
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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