Portfolio

All endpoints in this section require authentication. See Authentication.

Rate limit: v1-auth: 120 req / 60 s per IP

GET /api/v1/me

Returns your account information and balance.

Auth: Required

Response


{
  "id": "e5f6a7b8-c9d0-1234-ef01-345678901234",
  "displayName": "Alice",
  "email": "[email protected]",
  "balance": 987600,
  "createdAt": "2025-06-01T12:00:00.000Z"
}

Field	Type	Description
`id`	UUID string	Your user id
`displayName`	string	Display name
`email`	string	Account email
`balance`	integer	EUR-cent balance
`createdAt`	ISO 8601	Account creation time

GET /api/v1/me/orders

Returns your paginated order history.

Auth: Required

Query parameters

Param	Type	Default	Description
`status`	`"open"` \| `"filled"` \| `"all"`	`"open"`	`"open"` returns `open` + `partially_filled`; `"filled"` returns fully filled only; `"all"` returns all
`page`	integer	`1`	Page number
`limit`	integer	`20`	Results per page (1–50)

Unlike GET /orders, this endpoint does not accept "cancelled" as a status filter. Use GET /orders?status=cancelled if you need cancelled orders.

Response


{
  "data": [
    {
      "id": "d4e5f6a7-b8c9-0123-def0-234567890123",
      "userId": "e5f6a7b8-c9d0-1234-ef01-345678901234",
      "marketId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "marketTitle": "Will Reform Party win the most seats?",
      "side": "yes",
      "price": 55,
      "quantity": 100,
      "filledQuantity": 40,
      "status": "partially_filled",
      "orderType": "buy",
      "createdAt": "2026-01-10T09:00:00.000Z",
      "expiresAt": null
    }
  ],
  "meta": {
    "total": 87,
    "page": 1,
    "limit": 20,
    "hasMore": true
  }
}

GET /api/v1/me/portfolio

Returns your balance, all open positions (quantity > 0), and all currently resting orders in a single call. Designed for portfolio page polling.

Auth: Required

Response


{
  "balance": 987600,
  "positions": [
    {
      "id": "f6a7b8c9-d0e1-2345-f012-456789012345",
      "marketId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "marketTitle": "Will Reform Party win the most seats?",
      "marketStatus": "open",
      "lastTradePrice": 58,
      "side": "yes",
      "quantity": 60,
      "avgPrice": 54,
      "realisedPnl": 0
    }
  ],
  "openOrders": [
    {
      "id": "d4e5f6a7-b8c9-0123-def0-234567890123",
      "marketId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "marketTitle": "Will Reform Party win the most seats?",
      "side": "yes",
      "price": 55,
      "quantity": 100,
      "filledQuantity": 40,
      "status": "partially_filled",
      "orderType": "buy",
      "createdAt": "2026-01-10T09:00:00.000Z"
    }
  ]
}

Portfolio fields

Field	Type	Description
`balance`	integer	EUR-cent balance
`positions`	array	All positions with quantity > 0, ordered by market close time
`openOrders`	array	All resting orders (status `open` or `partially_filled`), newest first; capped at 200

Position fields

Field	Type	Description
`id`	UUID string	Position id
`marketId`	UUID string	Market
`marketTitle`	string	Market title
`marketStatus`	string	Current market status
`lastTradePrice`	integer \| null	Last traded price (1–99)
`side`	`"yes"` \| `"no"`	Which side you hold
`quantity`	integer	Shares held
`avgPrice`	integer	Weighted average cost (1–99)
`realisedPnl`	integer	EUR-cents realised after resolution

GET /api/v1/user/stream

Server-Sent Events stream for real-time account events: order fills, order cancellations, and balance changes.

Auth: Required
Rate limit: sse:user: 30 / 60 s per user (120 / 60 s per IP)

Server-side and API-key clients connect to the v1 path with their jk_ key as Authorization: Bearer. From the browser, use the same-origin proxy at /api/stream/user, which authenticates with the cookie session: EventSource can’t send an Authorization header.

Auth and rate-limit errors are returned as real HTTP statuses before the stream opens, as JSON, not as SSE frames. A missing or invalid key returns 401; exceeding either sse:user tier (30 / 60 s per user or 120 / 60 s per IP) returns 429 with a Retry-After header.

Connection frame

On connect the server immediately sends:


{ "type": "connected" }

Event types

All subsequent frames have a type field:

`order_fill`

Sent when one of your orders is partially or fully matched.


{
  "type": "order_fill",
  "orderId": "d4e5f6a7-b8c9-0123-def0-234567890123",
  "marketId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
  "marketTitle": "Will Reform Party win the most seats?",
  "side": "yes",
  "price": 55,
  "quantity": 20,
  "filledQuantity": 20,
  "balance": 976400
}

`order_cancelled`

Sent when one of your resting orders is cancelled (by you, expiry, market close, or insufficient position during a counterparty fill).


{
  "type": "order_cancelled",
  "orderId": "d4e5f6a7-b8c9-0123-def0-234567890123",
  "marketId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
  "marketTitle": "Will Reform Party win the most seats?",
  "side": "yes",
  "price": 55,
  "quantity": 100,
  "filledQuantity": 40,
  "cancelReason": "market_closed"
}

Keep-alive

The server writes : ping comments every 25 seconds. Reconnect on any network error.

Errors

Status	Body	When
`401`	`{ "error": "Unauthorized" }`	Missing or invalid token
`429`	`{ "error": "Too many requests" }`	`sse:user` limit exceeded: per user (30 / 60 s) or per IP (120 / 60 s)