alchemy_requestFeePayer

Requests fee and rent sponsorship for a Solana transaction and returns the fully-signed serializedTransaction (now containing the fee-payer signature).

We support rent sponsorship for createAccount and createAssociatedTokenAccount programs. If you need support for sponsoring rent in custom programs, please contact us at [email protected].

Requests fee and rent sponsorship for a Solana transaction and returns the **fully-signed** `serializedTransaction` (now containing the fee-payer signature). <Note> We support rent sponsorship for `createAccount` and `createAssociatedTokenAccount` programs. If you need support for sponsoring rent in custom programs, please contact us at [[email protected]](mailto:[email protected]). </Note>

Path parameters

apiKeystringRequiredDefaults to docs-demo

Request

This endpoint expects an object.

policyIdstring or list of stringsRequired

The Gas Manager Policy ID or list of Gas Manager Policy IDs.

serializedTransactionstringRequiredformat: "^[A-Za-z0-9+/]+={0,2}$"

The unsigned transaction produced by tx.serialize(). It may already contain a feePayer; the service will overwrite it with the sponsoring account and add the fee-payer signature.

Response

Object containing the fully-signed transaction ready for sendRawTransaction.

serializedTransactionstring

The transaction after the service sets the feePayer field and adds the fee-payer signature.

1	curl -X POST https://eth-mainnet.g.alchemy.com/v2/{apiKey} \
2	-H "Content-Type: application/json" \
3	-d '{
4	"jsonrpc": "2.0",
5	"method": "alchemy_requestFeePayer",
6	"params": [
7	{
8	"policyId": "69d524a7-e932-4214-8673-dcdcba31bb42",
9	"serializedTransaction": "AgICAQMEBQYHCAkKCwwNDg8BCg=="
10	}
11	],
12	"id": 1
13	}'

1	{
2	"jsonrpc": "2.0",
3	"id": "1",
4	"result": {
5	"serializedTransaction": "AQIDBAUGBwgJCgsMDQ4PEA=="
6	}
7	}