sendTransaction

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "sendTransaction",
  "params": ["SIGNED_TRANSACTION", { "encoding": "base64" }]
}

{"jsonrpc":"2.0","result":"BASE58_SIGNATURE","id":1}

curl -sS "https://sol.zerocopy.sh" \
  -H "x-api-key: $SWQOS_API_KEY" \
  -H 'content-type: application/json' \
  --data "{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"sendTransaction\",\"params\":[\"$(base64 -w0 signed-tx.bin)\",{\"encoding\":\"base64\"}]}"

import { readFile } from 'node:fs/promises'
import {
  createSolanaRpc,
  getBase64EncodedWireTransaction,
  getTransactionDecoder,
} from '@solana/kit'
import { required, url } from './swqos.ts'

// A fully signed transaction in wire format, from your signing flow.
const transaction = getTransactionDecoder().decode(await readFile(required('SIGNED_TX_FILE')))

const swqos = createSolanaRpc(url, { headers: { 'x-api-key': required('SWQOS_API_KEY') } })
const signature = await swqos
  .sendTransaction(getBase64EncodedWireTransaction(transaction), { encoding: 'base64' })
  .send()
console.log(signature)

import { readFile } from 'node:fs/promises'
import { call, required, SwqosError } from './swqos.ts'

const transaction = (await readFile(required('SIGNED_TX_FILE'))).toString('base64')

try {
  const signature = await call<string>('sendTransaction', [
    transaction,
    { encoding: 'base64', skipPreflight: false, preflightCommitment: 'confirmed' },
  ])
  console.log('accepted', signature)
} catch (error) {
  if (!(error instanceof SwqosError) || !error.rejection) throw error
  const { reason, retryable, message } = error.rejection
  console.error(error.status, reason, retryable, message)
  if (reason === 'simulation_failed') console.error(error.rejection.logs)
}

import { readFile } from 'node:fs/promises'
import { call, required } from './swqos.ts'

const transaction = (await readFile(required('SIGNED_TX_FILE'))).toString('base64')
const tip = Number(required('DECLARED_TIP_LAMPORTS'))
if (!Number.isSafeInteger(tip) || tip <= 0) throw new Error('tip must be a positive safe integer')
const signature = await call<string>('sendTransaction', [
  transaction,
  { encoding: 'base64', tip },
])
console.log(signature)