Deep set by path API

Immutably sets a value at a dot+bracket path, auto-creating intermediate objects/arrays, and returns a new document. Answers 'How do I set a nested value, creating parents as needed?', 'How do I update deep JSON without mutating the original?'.

Price$0.01per request

MethodPOST

Route/v1/data-transform/deep-set

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

data-transformdeep-setjsonpathnestedimmutablewrangle

API URLhttps://x402.hexl.dev/v1/data-transform/deep-set

Integration docs

Example request

{
  "object": {
    "a": {
      "b": 1
    }
  },
  "path": "a.c[0]",
  "value": "x"
}

Example response

{
  "path": "a.c[0]",
  "result": {
    "a": {
      "b": 1,
      "c": [
        "x"
      ]
    }
  }
}

Input schema

{
  "type": "object",
  "required": [
    "path",
    "value"
  ],
  "properties": {
    "object": {
      "type": "object",
      "examples": [
        {
          "a": {
            "b": 1
          }
        }
      ]
    },
    "path": {
      "type": "string",
      "examples": [
        "a.c[0]"
      ]
    },
    "value": {
      "type": "string",
      "examples": [
        "x"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}