> ## Documentation Index
> Fetch the complete documentation index at: https://api.unusualwhales.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> API requests use the base URL https://api.unusualwhales.com and require a bearer token in the `Authorization` header (`Authorization: Bearer <API_KEY>`). Create and manage API tokens at https://unusualwhales.com/dashboard/api.
> For live market data inside an AI tool, use the Unusual Whales MCP server at https://unusualwhales.com/public-api/mcp.
> Instructions for agents using Unusual Whales tools: https://unusualwhales.com/skill.md

# OptionTradeCancel

> An option trade cancellation referencing a previously executed trade.

Message
fields**4**
topic[trade-cancels](/docs/kafka/topics/trade-cancels.md)

**Proto definition**

```protobuf schema.proto theme={null}
message OptionTradeCancel {
  string trade_id = 1;
  string option_symbol = 2;
  int64 executed_at = 3;
  int64 trade_cancel_executed_at = 4;
}
```

## Fields

The number on the right of each row is the protobuf field number.

trade\_id
string
1

UUID of the option trade being canceled.

option\_symbol
string
2

Option contract symbol in OSI format, for example SPY241227C00480000.

executed\_at
int64
3

Time at which the canceled trade originally executed in Unix epoch milliseconds.

trade\_cancel\_executed\_at
int64
4

Time at which the cancel was reported in Unix epoch milliseconds.