NoLimitNodesDocs
Solana RPC guide

Send Transactions

Simulate, submit, and confirm Solana transactions through NoLimitNodes.

Use three steps for reliable submission. Simulate. Send. Confirm.

1. Simulate

Simulation catches account errors and compute budget problems before broadcast.

{  "jsonrpc": "2.0",  "id": "simulate",  "method": "simulateTransaction",  "params": [    "BASE64_TRANSACTION",    {      "encoding": "base64",      "commitment": "confirmed",      "replaceRecentBlockhash": true    }  ]}

Check these result fields:

  • err
  • logs
  • unitsConsumed
  • replacementBlockhash

2. Send

curl https://rpc.nln.clr3.org \  -H "Content-Type: application/json" \  -H "x-api-key: YOUR_API_KEY" \  -d '{    "jsonrpc":"2.0",    "id":"send",    "method":"sendTransaction",    "params":[      "BASE64_TRANSACTION",      {        "encoding":"base64",        "skipPreflight":false,        "preflightCommitment":"confirmed",        "maxRetries":3      }    ]  }'

The result is the first transaction signature from the signed message.

3. Confirm

Poll getSignatureStatuses or subscribe with signatureSubscribe.

{  "jsonrpc": "2.0",  "id": "status",  "method": "getSignatureStatuses",  "params": [    ["TRANSACTION_SIGNATURE"],    {      "searchTransactionHistory": true    }  ]}

Failure rules

  • Rebuild after the recent blockhash expires.
  • Stop on a program error.
  • Keep the same signature for network retries.
  • Record simulation logs with the failed signature.
  • Pick confirmed for user feedback and finalized for settlement records.