> For the complete documentation index, see [llms.txt](https://gitbook-docs.coinmetrics.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook-docs.coinmetrics.io/cm-api-spec/timeseries/timeseries-stream/market-trades.md).
# Market trades
Returns a WebSocket stream of trades for specified markets.\
If you are falling behind (slow client) you will get `warning` message first, then `error` message and disconnection will happen.
```json
{"openapi":"3.0.2","info":{"title":"Coin Metrics API v4","version":"4.0.0"},"tags":[{"name":"Timeseries stream","description":"WebSocket endpoints for getting a real-time stream of metrics, market data, indexes and other time series data.\n\n**Endpoints on this page:**\n- `GET /timeseries-stream/asset-metrics` — Asset metrics\n- `GET /timeseries-stream/asset-quotes` — Asset quotes\n- `GET /timeseries-stream/index-levels` — Index levels\n- `GET /timeseries-stream/market-candles` — Market candles\n- `GET /timeseries-stream/market-contract-prices` — Market contract prices\n- `GET /timeseries-stream/market-liquidations` — Market liquidations\n- `GET /timeseries-stream/market-openinterest` — Market open interest\n- `GET /timeseries-stream/market-orderbooks` — Market orderbooks\n- `GET /timeseries-stream/market-quotes` — Market quotes\n- `GET /timeseries-stream/market-trades` — Market trades\n- `GET /timeseries-stream/pair-quotes` — Pair quotes"}],"servers":[{"url":"wss://api.coinmetrics.io/v4"}],"security":[{"api_key":[]}],"components":{"securitySchemes":{"api_key":{"description":"Coin Metrics API key can be specified as `?api_key=` query parameter.","in":"query","name":"api_key","type":"apiKey"}},"parameters":{"MarketId":{"description":"Comma separated list of markets or market patterns like `exchange-*` or `exchange-*-spot` or `*USDT-future`.
Use a corresponding `/catalog-all-v2/market-{dataType}` endpoint for the full list of supported markets for a given data type.","in":"query","name":"markets","required":true,"schema":{"type":"array","items":{"type":"string"}},"explode":false},"Backfill":{"description":"What data should be sent upon a connection.
By default the latest values are sent just before real-time data.","in":"query","name":"backfill","schema":{"type":"string","default":"latest","enum":["latest","none"]}},"Pretty":{"description":"Human-readable formatting of JSON responses.","in":"query","name":"pretty","schema":{"type":"boolean","default":false}}},"responses":{"UriTooLong":{"description":"Provided URI is too long. It must not be greater than 10000 symbols."},"StreamingMarketTrades":{"description":"Trade WebSocket message.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/StreamingMarketTrade"}}}}},"schemas":{"StreamingMarketTrade":{"description":"Market trade WebSocket message.","properties":{"market":{"$ref":"#/components/schemas/MarketId"},"time":{"$ref":"#/components/schemas/Time"},"coin_metrics_id":{"$ref":"#/components/schemas/TradesCoinMetricsId"},"amount":{"$ref":"#/components/schemas/TradeAmount"},"price":{"$ref":"#/components/schemas/TradePrice"},"side":{"$ref":"#/components/schemas/TradeSide"},"cm_sequence_id":{"$ref":"#/components/schemas/cmSequenceId"},"collect_time":{"$ref":"#/components/schemas/TradeCollectTime"},"block_hash":{"$ref":"#/components/schemas/TradeBlockHash"},"block_height":{"$ref":"#/components/schemas/TradeBlockHeight"},"txid":{"$ref":"#/components/schemas/TradeTransactionId"},"initiator":{"$ref":"#/components/schemas/TradeInitiator"},"sender":{"$ref":"#/components/schemas/TradeSender"},"beneficiary":{"$ref":"#/components/schemas/TradeBeneficiary"},"mark_price":{"$ref":"#/components/schemas/TradeMarkPrice"},"index_price":{"$ref":"#/components/schemas/TradeIndexPrice"},"iv_trade":{"$ref":"#/components/schemas/TradeImpliedVolatility"},"liquidation":{"$ref":"#/components/schemas/TradeLiquidation"}},"required":["market","time","coin_metrics_id","amount","price","collect_time","cm_sequence_id"],"type":"object"},"MarketId":{"description":"Unique name of the market.","type":"string"},"Time":{"description":"The time in ISO 8601 date-time format. Always with nanoseconds precision.","type":"string","format":"date-time"},"TradesCoinMetricsId":{"description":"ID of a trade (unique per exchange market). We are using exchange reported value if exchange reports a unique numeric trade id. If exchange reports trade id as a string we convert to numeric using Bijective mapping from exchange reported trade id's string. If exchange doesn't report unique ID we transform it using exchange reported data to form a unique value per market.","type":"string"},"TradeAmount":{"description":"The amount of the base asset traded.","type":"string","format":"decimal"},"TradePrice":{"description":"The price of the base asset quoted in the quote asset that the trade was executed at.","type":"string","format":"decimal"},"TradeSide":{"description":"The market order side. \"buy\" means that an ask was removed from the book by an incoming buy order, \"sell\" means that a bid was removed from the book by an incoming sell order.","type":"string"},"cmSequenceId":{"description":"The monotonically increasing message number, resets on disconnection.","type":"string"},"TradeCollectTime":{"description":"Time of when the trade was received from the exchange.","type":"string","format":"date-time"},"TradeBlockHash":{"description":"Swap block hash. Available for DeFi markets only.","type":"string"},"TradeBlockHeight":{"description":"Swap block height. Available for DeFi markets only.","type":"string","format":"int64"},"TradeTransactionId":{"description":"Swap transaction ID. Available for DeFi markets only.","type":"string"},"TradeInitiator":{"description":"Swap transaction initiator. Available for DeFi markets only.","type":"string"},"TradeSender":{"description":"Swap caller. Available for DeFi markets only.","type":"string"},"TradeBeneficiary":{"description":"Swap output receiver. Available for DeFi markets only.","type":"string"},"TradeMarkPrice":{"description":"The price representing the futures' or option's price calculated by the exchange for risk management purposes.","type":"string","format":"decimal"},"TradeIndexPrice":{"description":"The price index is an aggregate price derived from the major exchanges to be representative of the underlying asset's market consensus price.","type":"string","format":"decimal"},"TradeImpliedVolatility":{"description":"Implied volatility calculated from the trade price.","type":"string","format":"decimal"},"TradeLiquidation":{"description":"Indicates whether the maker side, taker side, or both sides of the trade is under liquidation.","type":"string"}}},"paths":{"/timeseries-stream/market-trades":{"get":{"summary":"Market trades","description":"Returns a WebSocket stream of trades for specified markets.
If you are falling behind (slow client) you will get `warning` message first, then `error` message and disconnection will happen.","operationId":"getTimeseriesStreamMarketTrades","tags":["Timeseries stream"],"parameters":[{"$ref":"#/components/parameters/MarketId"},{"$ref":"#/components/parameters/Backfill"},{"$ref":"#/components/parameters/Pretty"}],"responses":{"414":{"$ref":"#/components/responses/UriTooLong"},"default":{"$ref":"#/components/responses/StreamingMarketTrades"}}}}}}
```
---
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```
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```
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