# Receive real-time accounting and ledger updates

**SUBSCRIBE /accounting**

Real-time accounting updates including fills, cancellations, merges, and payouts.
This stream provides atomic updates for both cash and position balances.

Query Parameters:
  - since=<uint64>   Last applied seq for resume (optional; must be >0; absent or 0 → start from live tail)
  - market=<id>      Repeatable; filter by market_id
  - account_id=<id>  Repeatable; filter by account_id

Resume semantics are identical to the /orders stream.


## Messages

### Accounting Update Frame

Unified atomic update of cash and position balances for an account within one engine tick.

#### Payload

- **type** (string)

- **seq** (integer(int64))

- **ts_ns** (integer(int64))

- **payload** (object)





### Accounting Payout Frame

Final cash and position adjustment from market settlement or void

#### Payload

- **type** (string)

- **seq** (integer(int64))

- **ts_ns** (integer(int64))

- **payload** (object)





### Heartbeat Frame

Keep-alive heartbeat (does not advance seq)

#### Payload

- **type** (string)

- **seq** (integer(int64))
  Repeats last delivered data seq; heartbeat does not advance global seq

- **ts_ns** (integer(int64))

- **payload** (object)





### Backlog End Marker

Signals end of historical replay; live streaming begins

#### Payload

- **type** (string)

- **seq** (integer(int64))

- **ts_ns** (integer(int64))

- **payload** (object)





### Error Frame

Error notification before close

#### Payload

- **type** (string)

- **seq** (integer(int64))

- **ts_ns** (integer(int64))

- **payload** (object)






## Bindings
#### Operation WebSockets-specific information

- **headers** (object)

- **query** (object)