Meta Broadcast

Broadcast a signed meta-transaction payload to the relayer.

Request URL

https://testnet.api.euclidprotocol.com/api/v1/execute/meta-txn/broadcast

Example

curl --request POST \
  --url https://api.euclidprotocol.com/api/v1/execute/meta-txn/broadcast \
  --header 'content-type: application/json' \
  --data '{
    "wallet_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
    "chain_uid": "monad",
    "signature": "09943f80f12cd92bd159cf08d3dc3505cdc22017fef2929f1d5f2946da952056...",
    "pub_key": "0437c6e8362883ef2497eed6adefa91e8d11783a1f4d535334d6e9d3040bbbd3...",
    "call_data": {
      "signer_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
      "signer_prefix": "0x",
      "signer_chain_uid": "monad",
      "call_data": [
        {
          "target": "euclid1yvgh8xeju5dyr0zxlkvq09htvhjj20fncp5g58np4u25g8rkpgjsy5hngy",
          "call_data": "{...}"
        }
      ],
      "expiry": 1771849451,
      "nonce": "1771849151"
    },
    "types": ["swap"],
    "meta": [
      {
        "type": "swap",
        "token_in": "mon",
        "token_out": "usdt",
        "token": "",
        "amount_in": "40000000000000000",
        "amount_out": ""
      }
    ]
  }'

{
  "queue_id": "0x887e4aac216674d2c432798f851c1ea5d505b2e1-monad-20260120161734"
}

Parameters

Field	Type	Description
call_data	object	Signed call data payload from the meta-txn/sign response.
chain_uid	string	Chain UID to broadcast on.
pub_key	string	Public key of the signer.
signature	string	Signature for the payload.
types	string[]	List of message types included in the payload.
wallet_address	string	Wallet address of the signer.
meta	object[]	Optional meta transaction context passed with broadcast payload.

CallDataPayload

Field	Type	Description
call_data	object[]	Array of target call-data items.
expiry	number	Expiry timestamp for the signed payload.
nonce	string	Nonce used for signing and replay protection.
signer_address	string	Address of the signer.
signer_chain_uid	string	Chain UID of the signer.
signer_prefix	string	Prefix used for signing.

CallDataItem

Field	Type	Description
call_data	string	Encoded call data for the message.
target	string	Contract address to receive the meta transaction.