POST /v1/cash/grants

{
  "type": "object",
  "properties": {
    "user_id": {
      "type": "string",
      "minLength": 1,
      "description": "Target user ID"
    },
    "brand_id": {
      "type": "string",
      "minLength": 1,
      "description": "Brand scope"
    },
    "amount_cents": {
      "type": "integer",
      "exclusiveMinimum": 0,
      "description": "Amount in cents to grant"
    },
    "source": {
      "type": "string",
      "minLength": 1,
      "description": "Grant source (e.g. promotion, referral)"
    },
    "reason": {
      "type": "string",
      "description": "Human-readable reason"
    },
    "expires_at": {
      "type": "string",
      "format": "date-time",
      "description": "Optional expiry timestamp"
    },
    "memo": {
      "type": "string",
      "description": "Optional memo"
    }
  },
  "required": [
    "user_id",
    "brand_id",
    "amount_cents",
    "source"
  ]
}

{
  "type": "object",
  "properties": {
    "grant_id": {
      "type": "string"
    },
    "account_id": {
      "type": "string"
    },
    "amount_cents": {
      "type": "integer"
    },
    "balance_cents": {
      "type": "integer"
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    }
  },
  "required": [
    "grant_id",
    "account_id",
    "amount_cents",
    "balance_cents",
    "created_at"
  ]
}

{
  "type": "object",
  "properties": {
    "error": {
      "type": "string"
    },
    "message": {
      "type": "string"
    }
  },
  "required": [
    "error",
    "message"
  ]
}

{
  "type": "object",
  "properties": {
    "error": {
      "type": "string"
    },
    "message": {
      "type": "string"
    }
  },
  "required": [
    "error",
    "message"
  ]
}

curl -X POST https://cash.platform.loop.health/v1/cash/grants \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{ ... }'