> ## Documentation Index > Fetch the complete documentation index at: https://cosmos-docs-sync-security-docs.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # broadcast_tx_commit > Returns with the responses from CheckTx and DeliverTx. IMPORTANT: use only for testing and development. In production, use BroadcastTxSync or BroadcastTxAsync. You can subscribe for the transaction result using JSONRPC via a websocket. See https://docs.cosmos.network/cometbft/v0.38/docs/core/Subscribing-to-events-via-Websocket CONTRACT: only returns error if mempool.CheckTx() errs or if we timeout waiting for tx to commit. If CheckTx or DeliverTx fail, no error will be returned, but the returned result will contain a non-OK ABCI code. Please refer to [formatting/encoding rules](https://docs.cosmos.network/cometbft/v0.38/docs/core/Using-CometBFT#formatting) for additional details ## OpenAPI ````yaml /cometbft/latest/api-reference/rpc/openapi.yaml get /broadcast_tx_commit openapi: 3.0.0 info: title: CometBFT RPC contact: name: CometBFT url: https://docs.cosmos.network/cometbft description: > CometBFT supports the following RPC protocols: * URI over HTTP * JSONRPC over HTTP * JSONRPC over websockets ## Configuration RPC can be configured by tuning parameters under `[rpc]` table in the `$CMTHOME/config/config.toml` file or by using the `--rpc.X` command-line flags. The default RPC listen address is `tcp://127.0.0.1:26657`. To set another address, set the `laddr` config parameter to desired value. CORS (Cross-Origin Resource Sharing) can be enabled by setting `cors_allowed_origins`, `cors_allowed_methods`, `cors_allowed_headers` config parameters. If testing using a local RPC node, under the `[rpc]` section change the `cors_allowed_origins` property, please add the URL of the site where this OpenAPI document is running, for example: `cors_allowed_origins = ["http://localhost:8088"]` or if testing from the official documentation site: `cors_allowed_origins = ["https://docs.cosmos.network"]` ## Arguments Arguments which expect strings or byte arrays may be passed as quoted strings, like `"abc"` or as `0x`-prefixed strings, like `0x616263`. ## URI/HTTP A REST like interface. curl localhost:26657/block?height=5 ## JSONRPC/HTTP JSONRPC requests can be POST'd to the root RPC endpoint via HTTP. curl --header "Content-Type: application/json" --request POST --data '{"method": "block", "params": ["5"], "id": 1}' localhost:26657 ## JSONRPC/websockets JSONRPC requests can be also made via websocket. The websocket endpoint is at `/websocket`, e.g. `localhost:26657/websocket`. Asynchronous RPC functions like event `subscribe` and `unsubscribe` are only available via websockets. For example using the [websocat](https://github.com/vi/websocat) tool, you can subscribe for 'NewBlock` events with the following command: echo '{ "jsonrpc": "2.0","method": "subscribe","id": 0,"params": {"query": "tm.event='"'NewBlock'"'"} }' | websocat -n -t ws://127.0.0.1:26657/websocket version: v0.38.x license: name: Apache 2.0 url: https://github.com/cometbft/cometbft/blob/v0.38.x/LICENSE servers: - url: https://rpc.cosmos.directory/cosmoshub description: Interact with the CometBFT RPC from a public node in the Cosmos registry - url: http://localhost:26657 description: Interact with CometBFT RPC node running locally security: [] tags: - name: Info description: Informations about the node APIs - name: Tx description: Transactions broadcast APIs - name: ABCI description: ABCI APIs - name: Evidence description: Evidence APIs - name: Unsafe description: Unsafe APIs paths: /broadcast_tx_commit: get: tags: - Tx summary: broadcast_tx_commit description: >- Returns with the responses from CheckTx and DeliverTx. IMPORTANT: use only for testing and development. In production, use BroadcastTxSync or BroadcastTxAsync. You can subscribe for the transaction result using JSONRPC via a websocket. See https://docs.cosmos.network/cometbft/v0.38/docs/core/Subscribing-to-events-via-Websocket CONTRACT: only returns error if mempool.CheckTx() errs or if we timeout waiting for tx to commit. If CheckTx or DeliverTx fail, no error will be returned, but the returned result will contain a non-OK ABCI code. Please refer to [formatting/encoding rules](https://docs.cosmos.network/cometbft/v0.38/docs/core/Using-CometBFT#formatting) for additional details operationId: broadcast_tx_commit parameters: - in: query name: tx required: true schema: type: string example: '785' description: The transaction responses: '200': description: empty answer content: application/json: schema: $ref: '#/components/schemas/BroadcastTxCommitResponse' '500': description: empty error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: BroadcastTxCommitResponse: type: object required: - error - result - id - jsonrpc properties: error: type: string example: '' result: required: - height - hash - deliver_tx - check_tx properties: height: type: string example: '26682' hash: type: string example: 75CA0F856A4DA078FC4911580360E70CEFB2EBEE deliver_tx: required: - log - data - code properties: log: type: string example: '' data: type: string example: '' code: type: string example: '0' type: object check_tx: required: - log - data - code properties: log: type: string example: '' data: type: string example: '' code: type: string example: '0' type: object type: object id: type: integer example: 0 jsonrpc: type: string example: '2.0' ErrorResponse: description: Error Response allOf: - $ref: '#/components/schemas/JSONRPC' - type: object properties: error: type: string example: Description of failure JSONRPC: type: object properties: id: type: integer example: 0 jsonrpc: type: string example: '2.0' ````