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

# eth_sendRawTransactionSync | Base

> Reference docs for the eth_sendRawTransactionSync JSON-RPC method on the Base blockchain, available via Chainstack JSON-RPC nodes.

Base API method `eth_sendRawTransactionSync` allows for the submission of a pre-signed transaction to the Base network and waits synchronously for the transaction receipt or a configurable timeout. This method reduces transaction submission latency by combining transaction submission and receipt retrieval into a single RPC call, based on [EIP-7966](https://eips.ethereum.org/EIPS/eip-7966).

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## Parameters

* `signedTransactionData` — the signed transaction data in hexadecimal format. This data includes the transaction details such as nonce, gas price, gas limit, to address, value, data, and the signature.
* `timeout` (optional) — maximum wait time in milliseconds, passed as a number (not a string). If not provided, uses the node's default timeout (typically 2 seconds). Must be a positive integer up to the node-configured maximum of `6000` ms. Values above the maximum are rejected with `time out too long, timeout: <value> ms, max: 6000 ms`.

## Response

* `result` — the complete transaction receipt object containing transaction hash, block information, gas usage, contract address (if applicable), logs, and status.

## Use case

The `eth_sendRawTransactionSync` method is particularly useful for:

* High-frequency applications requiring immediate transaction confirmation feedback.
* Layer 2 solutions with fast block times where rapid transaction throughput is critical.
* DApps and wallets seeking to improve user experience with faster transaction confirmations.
* Trading applications where transaction latency directly impacts performance.
* Applications requiring stronger delivery guarantees than standard asynchronous transaction submission.


## OpenAPI

````yaml /openapi/base_node_api/eth_sendRawTransactionSync.json POST /2fc1de7f08c0465f6a28e3c355e0cb14
openapi: 3.0.0
info:
  title: eth_sendRawTransactionSync example
  version: 1.0.0
  description: >-
    This is an API example for eth_sendRawTransactionSync, a method to submit a
    pre-signed transaction and wait synchronously for the transaction receipt or
    timeout. Based on EIP-7966.
servers:
  - url: https://base-mainnet.core.chainstack.com
security: []
paths:
  /2fc1de7f08c0465f6a28e3c355e0cb14:
    post:
      tags:
        - Ethereum Operations
      summary: eth_sendRawTransactionSync
      operationId: sendRawTransactionSync
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - jsonrpc
                - method
                - id
                - params
              properties:
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_sendRawTransactionSync
                id:
                  type: integer
                  default: 1
                params:
                  type: array
                  default:
                    - >-
                      0xf86c808504a817c80082520894ab5db0e98b8ea6b7f9d8ad8e8ed0bc8fba0d1a2f870de0b6b3a764000080821b9f
                  items:
                    oneOf:
                      - type: string
                      - type: integer
                  minItems: 1
                  maxItems: 2
            examples:
              example1:
                summary: Submit raw transaction with timeout
                value:
                  jsonrpc: '2.0'
                  method: eth_sendRawTransactionSync
                  params:
                    - >-
                      0xf86c808504a817c80082520894ab5db0e98b8ea6b7f9d8ad8e8ed0bc8fba0d1a2f870de0b6b3a764000080821b9f
                    - 5000
                  id: 1
      responses:
        '200':
          description: Successful transaction submission with receipt
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                    example: '2.0'
                  id:
                    type: integer
                    example: 1
                  result:
                    type: object
                    properties:
                      transactionHash:
                        type: string
                        example: >-
                          0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef
                      blockHash:
                        type: string
                        example: >-
                          0xabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdef
                      blockNumber:
                        type: string
                        example: '0x12345'
                      gasUsed:
                        type: string
                        example: '0x5208'
                      status:
                        type: string
                        example: '0x1'

````