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

# Realtime SSE

> Live-only provisional trade events from the realtime service.

The realtime HTTP service implements:

| Method | Path       | Response                              |
| ------ | ---------- | ------------------------------------- |
| GET    | `/healthz` | `text/plain` process liveness         |
| GET    | `/events`  | `text/event-stream` live trade stream |

Each market message uses event type `trade`, deterministic SSE `id`, and JSON `data`:

```text theme={null}
event: trade
id: 5042002:0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:4
data: {"identity":"5042002:0xaaaa...:4","chain_id":5042002,"token":"0x1111...","market":"0x2222...","source":"curve","side":"buy","block_number":60000000,"block_timestamp":1800000000,"transaction_hash":"0xaaaa...","log_index":4,"removed":false,"received_at":"2026-01-01T00:00:00Z","token_amount_raw":"1000000000000000000","usdc_amount_raw":"1000000000000000000","usdc_decimals":18,"raw_fields":{}}
```

The example is abbreviated and illustrative. `source` is `curve` or `uniswap_v3`; `usdc_decimals` is respectively 18 or 6. `removed: true` retracts the event with the same identity.

There is no historical replay and `Last-Event-ID` is not replayed. Heartbeats are `: ping` comments. Browser origins must match the configured allowlist. Use canonical token/chart/trade API snapshots to recover gaps and retire provisional events.