# POST /v4/config/diff

_Merkl API_

Compute the diff between two config schemas. Returns an array of edit operations (insert/update/delete).

## Request body

**`application/json`**
```json
{
  "type": "object",
  "properties": {
    "oldConfig": {
      "description": "The original campaign configuration."
    },
    "newConfig": {
      "description": "The new campaign configuration to compare against."
    }
  },
  "required": [
    "oldConfig",
    "newConfig"
  ]
}
```
**`application/x-www-form-urlencoded`**
```json
{
  "type": "object",
  "properties": {
    "oldConfig": {
      "description": "The original campaign configuration."
    },
    "newConfig": {
      "description": "The new campaign configuration to compare against."
    }
  },
  "required": [
    "oldConfig",
    "newConfig"
  ]
}
```
**`multipart/form-data`**
```json
{
  "type": "object",
  "properties": {
    "oldConfig": {
      "description": "The original campaign configuration."
    },
    "newConfig": {
      "description": "The new campaign configuration to compare against."
    }
  },
  "required": [
    "oldConfig",
    "newConfig"
  ]
}
```

## Responses

- **200** Override value as JSON

## Example request

```bash
curl -X POST "https://api.merkl.xyz//v4/config/diff" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ ... }'
```