Problem closing down my pool

Yes, sure. But if you are able to create and sign the transaction, you should be able to also send it to a submit-api endpoint with curl. Use Koios API for this: Koios API Documentation

First, encode the tx.signed to the cbor format:
jq .cborHex tx.signed | xxd -r -p > tx.signed.cbor

Then submit it:

curl -X POST \
    --header "Content-Type: application/cbor" \
    --data-binary @tx.signed.cbor https://api.koios.rest/api/v0/submittx
2 Likes