Solana RPC · Transactions

POST getFeeForMessage

Fee the cluster will charge for a compiled message.

Endpoint

POST  https://solrpc.infinityblocks.io/<API_KEY>

Standard Solana JSON-RPC 2.0 over HTTP POST. The API key is part of the URL path.

Parameters

ParamTypeRequiredDescription
messagestringyesBase-64 encoded transaction message.
configobjectnocommitment.

Request

curl -s https://solrpc.infinityblocks.io/<API_KEY> \
  -X POST -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"getFeeForMessage","params":["<MESSAGE_BASE64>",{"commitment":"confirmed"}]}'

With @solana/web3.js

const { value: fee } = await rpc.getFeeForMessage(message);

Response

{ "jsonrpc": "2.0", "id": 1, "result": { "context": { "slot": 423214981 }, "value": 5000 } }

Try it

Run getFeeForMessagelive · POST

Replace placeholders (e.g. <ADDRESS>) with real values. Your key is stored only in this browser.

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