order.cancel

Cancel an order that has NOT been paid yet (pending_payment -> cancelled), releasing its reservation. Idempotent by state; cancelling a paid order is a conflict. When money has already been taken, give it back FIRST with order.refund — never cancel before refunding, because a cancelled order still holding the customer’s money is a broken obligation to them.

• Scope: order.write
• System: no
• Reachable from: POST /v1/commands/order.cancel (tenant credential) · MCP tool order.cancel · SDK client.call('order.cancel', …)
• Events: order.cancelled, inventory.released

Input (JSON Schema)

{
  "properties": {
    "order_id": {
      "minLength": 1,
      "type": "string"
    },
    "reason": {
      "type": "string"
    }
  },
  "required": [
    "order_id"
  ],
  "type": "object"
}

Result (200)

{
  "additionalProperties": false,
  "properties": {
    "order_id": {
      "type": "string"
    },
    "status": {
      "type": "string"
    }
  },
  "required": [
    "order_id",
    "status"
  ],
  "type": "object"
}

Errors

validation_failed (400) · unauthorized (401) · forbidden (403) · conflict (409) · internal (500)